Article: 219391 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1132374523.991396.123130@g49g2000cwa.googlegroups.com> Message-ID: Date: Sat, 19 Nov 2005 15:27:47 GMT Paladin wrote: > I guess that an old man who hasn't been into electronics very long. > But, I do possess a fair amount of common sense. I can see that > you guys can't or won't help me figure out my problem. Too many > issues here. Everyone has SOME area of excellence. > I just haven't found the right person who WILL help. Life is filled > with people who can only see their way. Words are not as > powerful as IDEAS. Thanks for the "words", fellas. I think there are people willing to help but from your original posting, there was not enough information for me to model your antenna. I don't recall you even telling us the length of your inv-V dipole. And what did you mean by "linear loaded"? -- 73, Cecil http://www.qsl.net/w5dxp Article: 219392 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> Message-ID: Date: Sat, 19 Nov 2005 15:39:08 GMT Reg Edwards wrote: > Cec, What is ELNEC? OK, I can guess! ELNEC was the DOS-based ancestor of EZNEC. (W7 EL NEC) It remains the piece of software in my entire life with which I was most amazed and delighted. For me, ELNEC rekindled the "magic" of amateur radio. > 'Experts' should realise, from the manner in which questions are > written, the predicament some questioners are in and make allowances > instead of leaving them to flounder about in a sea of frustration and > despondency. But 'Experts' need to know the length of the antenna which, to the best of my knowledge, wasn't given in the original posting. That's why I recommended EZNEC. -- 73, Cecil http://www.qsl.net/w5dxp Article: 219393 of rec.radio.amateur.antenna From: "Landshark" References: <61242$437cfa62$97d56a33$5030@ALLTEL.NET> <1132352652.680305.19990@g47g2000cwa.googlegroups.com> <4leln1hc7fgskadkmckh74niqpomj6qhbd@4ax.com> Subject: Re: Congats Cecil W5DXP Message-ID: Date: Sat, 19 Nov 2005 16:28:09 GMT "Russ" wrote in message news:4leln1hc7fgskadkmckh74niqpomj6qhbd@4ax.com... > On 18 Nov 2005 14:24:12 -0800, "moparholic" > wrote: > >> >>Cecil Moore wrote: >>> Fred W4JLE wrote: >>> > Nice article in WorldRadio December issue. >>> > >>> Thanks, part I was in the Oct. issue - >>> Part II hopefully in Jan. >>> -- >>> 73, Cecil, http://www.qsl.net/w5dxp >> >>hi Cecil, >> >>how about an article on the sick gay shit you hams crave so >>much.........like how you sick fucks select the "young ham of the year" >>hehehehhe! > > Now here is somebody who is making mommy and daddy proud, eh? > > R Actually, that's our resident Rec.Radio.CB troll, Doug Adair N8WWM. Just google N8WWM and see all the fine writings on record for him. Better yet, go and google "keyclown" or "keyclownz" in either web or groups search. Landshark -- That's funny. You managed to actually make the thug alter his outside real world actions because of his incompetence in this ng. The internet magnifies peoples' idiocy, as he shows. Article: 219394 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1132374523.991396.123130@g49g2000cwa.googlegroups.com> <1132419614.539482.108620@z14g2000cwz.googlegroups.com> Message-ID: Date: Sat, 19 Nov 2005 17:15:11 GMT Paladin wrote: > The elements are "linear-loaded". They are folded back on themselves. > The phsical length is 70ft.,But the electrical length is 210ft. long Something like this? (fixed font) 35' 35' -------------------------+ +------------------------- | | +------------------------+ +------------------------+ | | +------------------------+ +------------------------+ | | | | | | feedline How far apart are the adjacent wires spaced? -- 73, Cecil http://www.qsl.net/w5dxp Article: 219395 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: feedlines and strange intereactions Date: Sat, 19 Nov 2005 17:33:23 +0000 (UTC) Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> > But 'Experts' need to know the length of the antenna which, to the > best of my knowledge, wasn't given in the original posting. That's > why I recommended EZNEC. > -- > 73, Cecil ================================ Dear Cec, So, if you had anything to say, why didn't you just ask him how long is his antenna instead of sending him off on a wild goose chase? I must admit you got nearer to discovering what was missing than I did. Let's see what happens now. ---- Reg, G4FGQ Article: 219396 of rec.radio.amateur.antenna From: "Paul M0EME" Subject: off set dipole Date: Sat, 19 Nov 2005 17:53:13 -0000 Message-ID: <437f668a$1_2@mk-nntp-2.news.uk.tiscali.com> Can anyone point me in the right direction for a design for a offset dipole. I would prefer it for 20M many thanks -- Thanks and 73's de Paul M0EME 432MHz EME 4 times FO19, FT847, MGF1302, 100 Watts at feed, Spectran. Initials 432MHz #2 CW #4 JT65 http://myweb.tiscali.co.uk/m0eme Article: 219397 of rec.radio.amateur.antenna Message-ID: <437FA0B9.F8DB3C78@periodic_table.com> From: xenon Subject: Re: support vertical with PVC? References: <1132177125.071506.97410@g44g2000cwa.googlegroups.com> Date: Sat, 19 Nov 2005 22:01:31 GMT Hi, Just prime and paint the pvc pipe with good exterior house latex paint. Or use sched 80 or 40 PVC electrical grey conduit, no paint needed. xenon Article: 219398 of rec.radio.amateur.antenna From: Butch Magee Subject: Re: Congats Cecil W5DXP Date: Sat, 19 Nov 2005 20:25:31 -0600 Message-ID: <11nvnksq6akiqc9@corp.supernews.com> References: <61242$437cfa62$97d56a33$5030@ALLTEL.NET> Fred W4JLE wrote: > Nice article in WorldRadio December issue. > > I live in the "refugee" area of the Mississippi gulf coast (Diamondhead) and don't get all my magazines yet. What did Cecil wrote about (cajun) Butch KF5DE Article: 219399 of rec.radio.amateur.antenna From: "Fred W4JLE" References: <61242$437cfa62$97d56a33$5030@ALLTEL.NET> <11nvnksq6akiqc9@corp.supernews.com> Subject: Re: Congats Cecil W5DXP Date: Sat, 19 Nov 2005 22:53:25 -0500 Message-ID: His article covers an analysis of energy on a transmission line that contains impedance discontinuity. He has covered the subject on this news group and the article is a compilation of those thoughts. Enjoyable reading sans the QRM one finds on a newgroup. "Butch Magee" wrote in message news:11nvnksq6akiqc9@corp.supernews.com... > Fred W4JLE wrote: > > Nice article in WorldRadio December issue. > > > > > I live in the "refugee" area of the Mississippi gulf coast (Diamondhead) > and don't get all my magazines yet. What did Cecil wrote about (cajun) > > Butch KF5DE Article: 219400 of rec.radio.amateur.antenna From: Bob Bob Subject: Re: off set dipole References: <437f668a$1_2@mk-nntp-2.news.uk.tiscali.com> Message-ID: Date: Sat, 19 Nov 2005 21:10:01 -0600 Hi Paul This any use? http://www.cebik.com/gup/gup9.html Cheers Bob VK2YQA Paul M0EME wrote: > Can anyone point me in the right direction for a design for a offset dipole. > I would prefer it for 20M > many thanks Article: 219401 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Loop Antennas Date: Sat, 19 Nov 2005 22:26:36 -0600 Message-ID: <19147-437FFAFC-563@storefull-3256.bay.webtv.net> References: Al, VE7AGW wrote: "I thought Charlie Pride sang that one." I wouldn`t be surprised. Charlie is a great country singer. When I hear his name, "Kiss a Devil Good Morning" pops into mind. Ray Price mostly owns "For the Good Times." Ray still lives in Texas, rides motorcycles, and has taken up comedy, I suppose, to enlarge his act. Since Clear Channel Communications, Infinity Broadcasting, etc. bought most of the non-network-owned broadcast outlets, music stations have disappeared. Clear Channel changed the music programming of the last sizeable AM music outlet in Houston to sports programming last year. That was when I found the 680 KHz signal from San Antonio was usually good here 24-hours. I think they run 50-KW nondirectional day time and 10-KW nighttime, pointed away from KNBC in San Francisco at nignt. KNBC is 50-KW, 680 KHz, non-directional day and night. At night on 680 KHz in Houston, there is somtimes interference from Cuba. The map shows 4 Cuban stations sharing 680 KHz, so there are tales about "El Commandante Fidel" breaking into my night music from San Antonio at times. There are several Mexican stations too, but they seem to try not to interfere. WAPA in San Juan, Puerto Rico is shown as 10 KW non-directional night and day on the map, but I have not noticed interference from them, so I wonder if they are really still there. For country music in most of North America, a good bet might be "The Grand Ole Opry Station", WSM in Nashville, Tennessee. It is 650 KHz, 50-KW, non-directional, night and day. When I was a kid, this station adveritised itself as "The National Life and Accidennt Station" but already carried "The Opry" The insurance business has shifted about like the broadcasting business. Both are regulated. Insurance by the state and broadcasting by the feds. My Broadcast Allocation Map Book doesn`t indicate programming. It was only in the earliest days that the Commerce Department ruled that all stations on a certain frequency must only broadcast music. Sometimes the first idea is the best. Best regards, Richard Harrison, KB5WZI Article: 219402 of rec.radio.amateur.antenna From: "Fred W4JLE" References: <19147-437FFAFC-563@storefull-3256.bay.webtv.net> Subject: Re: Loop Antennas Date: Sat, 19 Nov 2005 23:41:15 -0500 Message-ID: <5ea34$437ffe6d$97d56a33$1046@ALLTEL.NET> Can't believe you left out WCKY Cincinnati 1 Ohio :>) "Richard Harrison" wrote in message news:19147-437FFAFC-563@storefull-3256.bay.webtv.net... > Grand Ole Opry Station", WSM in Nashville, Tennessee. It is 650 KHz, > 50-KW, non-directional, night and day. When I was a kid, this station > adveritised itself as "The National Life and Accidennt Station" but > already carried "The Opry" The insurance business has shifted about like > the broadcasting business. Both are regulated. Insurance by the state > and broadcasting by the feds. > > My Broadcast Allocation Map Book doesn`t indicate programming. It was > only in the earliest days that the Commerce Department ruled that all > stations on a certain frequency must only broadcast music. Sometimes the > first idea is the best. > > Best regards, Richard Harrison, KB5WZI > Article: 219403 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: feedlines and strange intereactions Date: Sun, 20 Nov 2005 08:50:46 +0000 (UTC) Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> Cec, as an aside, when people are conversing with each other, 50 percent of the information passing to and fro is conveyed by body language. Body language is completely lacking when conversing via newsgroups. This can very easily lead to misunderstanding and futile argument. People should check and recheck what they have said before posting. The existence of certain types of spelling mistakes and obvious grammatical errors are a guide to the care and attention which has been paid by the sender to saying what he intended to say. I admit, very careless senders do not deserve any replies. Not because absence of reply is an unsaid reprimand but because they have indicated their inability to understand a reply if they get one. Then there are trollers! This message is primarily intended for people seeking solutions to problems. I have had only two glasses of white wine. (South African). And I don't know how to use a spell-checker even if I had one. ---- Yours, Reg, G4FGQ Article: 219404 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: feedlines and strange intereactions Date: Sun, 20 Nov 2005 08:50:46 +0000 (UTC) Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> "Cecil Moore" wrote > Reg, a standing recommendation of mine is to download the free > demo version of EZNEC and have fun learning how to use it. > Any amateur radio operator who succeeds in doing so will be > rewarded for the effort expended (and was also a source of > extreme pleasure in my case). ELNEC/EZNEC and the Smith > Chart (Microsmith) are the most useful tools I have ever > encountered for comprehension of antenna systems. (Not > considering reference books as "tools".) > -- =================================== Dear Cec, In the present context, in the absence of body language, your praise of EZNEC can perhaps be misconstrued as my criticism of that erstwhile computer program. On the contrary, I quite agree with your comments. Regarding the Smith Chart, I have myself never found it to be of any use. In fact I don't know how to use it. I am aware of its long-standing existence, and what it is purported to achieve, from this newsgroup and from the one or two ancient 'bibles' which I seldom refer to. But the absence of a Smith Chart may be due to some vague shortcoming in my education for which I have no responsibility. So I have never felt myself to be handicapped in any way. Indeed, I have gained from this and other websites the impression that I am considered to be a transmission line 'expert'. But I claim only to be a well-educated, useful engineer who also happens, in retirement, to be a radio amateur with the ability to express myself in plain written English. To continue with my earlier message, I have just finished a third glass of white, South African wine. But enough about me. What are you doing about Bush? ---- Reg. Article: 219405 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: feedlines and strange intereactions Date: Sun, 20 Nov 2005 09:39:46 +0000 (UTC) Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> And I have never been criticised for begining a sentence with "and". ---- Reg. Article: 219406 of rec.radio.amateur.antenna From: "Collon" Subject: will rabit ear antennae increase signal pick-up for TV Message-ID: Date: Sun, 20 Nov 2005 08:46:26 -0600 I just bought the battery operated TV below. I cannot get any of the stations, probably because I am 30 miles away from them. The thing has a built in antenna, but it also has a place where I can connect a more powerful antenna. Will a rabit ear antenna increase my chances of picking up a tv signal that the built in antenna will not? http://www.dealtime.com/xPC-GPX_5_Black_and_White_TV_CD_Player_Radio_Combo Article: 219407 of rec.radio.amateur.antenna From: "Caveat Lector" References: <67qdnXQRgcjZBR3enZ2dnUVZ_t2dnZ2d@crocker.com> Subject: Re: will rabit ear antennae increase signal pick-up for TV Message-ID: Date: Sun, 20 Nov 2005 07:46:24 -0800 Try a 300 ohm twin-lead homemade antenna. Will beat the rabbit ears and kick the rabbit's butt (;-) See URL: http://www.wfu.edu/~matthews/misc/dipole.html -- CL -- I doubt, therefore I might be ! "Dave" wrote in message news:67qdnXQRgcjZBR3enZ2dnUVZ_t2dnZ2d@crocker.com... > > "Collon" wrote in message > news:TY%ff.1387$KP1.8@bignews5.bellsouth.net... >>I just bought the battery operated TV below. I cannot get any of the >>stations, probably because I am 30 miles away from them. The thing has a >>built in antenna, but it also has a place where I can connect a more >>powerful antenna. Will a rabit ear antenna increase my chances of picking >>up a tv signal that the built in antenna will not? >> >> http://www.dealtime.com/xPC-GPX_5_Black_and_White_TV_CD_Player_Radio_Combo >> > > it can't hurt. and it would give you a way to get the antenna in a better > position in the room than wherever you are sitting with your magnifier to > watch that little screen. > Article: 219408 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> <1132503266.988762.12120@o13g2000cwo.googlegroups.com> Message-ID: Date: Sun, 20 Nov 2005 17:46:22 GMT Paladin wrote: > ON4UN's book on "low band dxing" states that there aren't any > PROGRAMS for linear-loaded ant.'s out there. That may be true but if we space the parallel conductors a foot apart, take a look with EZNEC, and it's a dog of an antenna, we can draw certain conclusions about the closer spacing of your antenna. -- 73, Cecil http://www.qsl.net/w5dxp Article: 219409 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1132374523.991396.123130@g49g2000cwa.googlegroups.com> <1132419614.539482.108620@z14g2000cwz.googlegroups.com> <1132502689.619992.149510@g47g2000cwa.googlegroups.com> Message-ID: Date: Sun, 20 Nov 2005 17:48:56 GMT Paladin wrote: > The wires are close. The builder used rotor feed line. 3 equal > lengths of wires 70ft. long > THAT make one element. there is one on the oppisite side. So like this? 70' 70' -------------------------+ +------------------------- | | +------------------------+ +------------------------+ | | +------------------------+ +------------------------+ | | | | | | feedline -- 73, Cecil http://www.qsl.net/w5dxp Article: 219410 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: feedlines and strange intereactions Date: Sun, 20 Nov 2005 12:50:18 -0600 Message-ID: <22448-4380C56A-728@storefull-3254.bay.webtv.net> References: <1132374523.991396.123130@g49g2000cwa.googlegroups.com> Paladin wrote: "I just haven`t found the right person who will help." Help, it seems, is the answer Paladin wants to hear. When you want to put 8 pounds of crap in a 4-pound bag, life is often that way. You quickly run out of good advice. When a respondent says there`s no computer program to tell you how to linearly-load an antenna wire, you are invited to prove him wrong. The ARRL Antenna Book says: "Since the dimensions and spacing of linear-loading devices vary greatly >from one antenna to another, the best way to employ this technique is to try a length of conductor 10% to 20% longer than the difference between the shortened antenna and the full-size dimension for the linear-loading device. Then use te "cut-anhd-try" method, varying both the spacing and length of the loading device to optimize the match." You might write a program for that. Best regards, Richard Harrison, KB5WZI Article: 219411 of rec.radio.amateur.antenna From: "Frank" References: <1132357825.631091.7400@z14g2000cwz.googlegroups.com> Subject: Re: tv antenna, any simple standards that work? Message-ID: Date: Sun, 20 Nov 2005 20:18:00 GMT >> Got a small tv in Luxembourg, no channels found (trying both SECAM and >> PAL). I suppose I need an external antenna. Something cheap will likely >> do the job as signals should be good in this area, but are there any >> pitfalls to avoid in order to avoid a 100% useless antenna? >> > If you live within about 30 km from a station, you should be able to get > some kind of a picture with nothing more than a 1 meter piece of wire > connected to the antenna terminal. Make sure the TV is set for antenna, > not cable. Don't k now the European frequency plan, but here in the US, TV > channels 14 and above are offset by 1/3 of a channel from cable channels > in the same frequency range. > > Tam Found the following on the web. Note the channel frequencies are different >from North America. No mention of VHF for TV broadcasting in the UK. http://www.digitaltelevision.gov.uk/pdf_documents/publications/DTT_Reception_Impact_Analysis_Ver_1.0.pdf Frank Article: 219412 of rec.radio.amateur.antenna From: Sean Subject: Supernova versus gpm-1500 Date: Sun, 20 Nov 2005 23:23:02 +0100 Message-ID: <11o1tqa5it6qdab@corp.supernews.com> References: <42cf4d37_3@x-privat.org> <3605e1l2erm97mr4qckcvqu1rt7u6ki253@4ax.com> <9szEe.519$S73.6624348@news.sisna.com> <11e4e$42e52a21$471c636a$26707@ALLTEL.NET> anyone experience? thank you Sean Article: 219413 of rec.radio.amateur.antenna From: "Fred W4JLE" References: <1132357825.631091.7400@z14g2000cwz.googlegroups.com> Subject: Re: tv antenna, any simple standards that work? Date: Sun, 20 Nov 2005 17:23:12 -0500 Message-ID: <98c9a$4380f751$97d56a33$3576@ALLTEL.NET> Probably because it covered DIGITAL TV. They have a few analog channels. The last time I was there they had BBC1 and BBC2 on VHF. What I found interesting is that a lot of Europe uses vertical polarization rather than horizontal like we do. Every time I go over there it takes me a few days to get use to the 50 Cycle refresh rate which I perceive as flicker. But at least the "colour" is the same from all cameras. "Frank" wrote in message news:YR4gf.120103$S4.98713@edtnps84... > Found the following on the web. Note the channel frequencies are different > from North America. No mention of VHF for TV broadcasting in the UK. > > http://www.digitaltelevision.gov.uk/pdf_documents/publications/DTT_Reception_Impact_Analysis_Ver_1.0.pdf > > Frank > > Article: 219414 of rec.radio.amateur.antenna From: "Charlie" Subject: Add 12M and 17M to Huslter 4 5 or 6 BTV's Date: Sun, 20 Nov 2005 16:51:28 -0600 Message-ID: <11o1vfs1bssp6fc@news.supernews.com> Total cost about $10. Takes about an hour total time. No permanent modifications to original antenna. Web page includes complete fabrication and assembly instructions. Also included is final test data showing swr at <1.3:1 across all 7 bands of a modified Hustler 5-BTV. Some retuning of 20M is usually needed after 12M and 17M are installed and tuned. Mod consists of a 12M 1/4 wave radiator and a similar 17M 1/4 wave radiator installed along side antenna held with 4 Plexiglas spreaders which are home brewed. Takes legal limit.....looks good...works good too! Tired of "contesters" jamming up the bands nearly every weekend? Find refuge on 12M and 17M !!! 1. http://www.ad5th.com/5-BTV-WARC.html -- Charlie - AD5TH www.ad5th.com Article: 219415 of rec.radio.amateur.antenna From: Jim - NN7K Subject: Re: tv antenna, any simple standards that work? References: <1132357825.631091.7400@z14g2000cwz.googlegroups.com> Message-ID: Date: Sun, 20 Nov 2005 23:08:28 GMT If you are trying to use this in the North American, South American markets, no wonder it doesnt work! North american uses NTSC standard, while PAL/and SECAM are European standards! Think there is also another standard for Austrailia/New Zeland, tho they might also use PAL. (and this is before you consider the tv station frequencies difference)! Jim NN7K Frank wrote: >>>Got a small tv in Luxembourg, no channels found (trying both SECAM and >>>PAL). I suppose I need an external antenna. Something cheap will likely >>>do the job as signals should be good in this area, but are there any >>>pitfalls to avoid in order to avoid a 100% useless antenna? >>> >> >>If you live within about 30 km from a station, you should be able to get >>some kind of a picture with nothing more than a 1 meter piece of wire >>connected to the antenna terminal. Make sure the TV is set for antenna, >>not cable. Don't k now the European frequency plan, but here in the US, TV >>channels 14 and above are offset by 1/3 of a channel from cable channels >>in the same frequency range. >> >>Tam > > > Found the following on the web. Note the channel frequencies are different > from North America. No mention of VHF for TV broadcasting in the UK. > > http://www.digitaltelevision.gov.uk/pdf_documents/publications/DTT_Reception_Impact_Analysis_Ver_1.0.pdf > > Frank > > Article: 219416 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Loop Antennas Date: Sun, 20 Nov 2005 17:50:39 -0600 Message-ID: <15195-43810BCF-912@storefull-3252.bay.webtv.net> References: <5ea34$437ffe6d$97d56a33$1046@ALLTEL.NET> Fred, W4JLE wropte: "Can`t believe you left out WCKY Cincinnati 1 Ohio." WCKY 1530 KHz should not be omitted from any list of great radio stations accessible to millions of listeners. I made no list. I picked only one station I thought might best typify country music and be widely propagated. WCKY is 50 KW nondirectional daytime but uses a n-s directional pattern which places a sharp null toward KFBK Sacremento, California. KFBK also uses 50 KW but in a north-south directional pattern up and down the west coast of the U.S.A.. This tends to protect WCKY, too. WSM always has a 50 KW nondirectional pattern. That is now the maximum power allowed AM broadcasting in the U.S.A. When I was a kid, another Cincinnati station, WLW was called the "Nation`s Station" and broadcast with 500,000 watts. It really could be heard almost everywhere. WSM is exceptional due to programming. It originates the "Grand Ole Opry". A network of more than 100 stations carry the program in several countries. It also feeds the Armed Forces Radiom Service. WSM at 650 KHz is toward the low-frequency end of the AM broadcast band and that tends to propagate day or night better than the high end of the band. Dolly Parton is a regular on the Opry and that trumps all other reasons for picking WSM as a favorite. Best regards, Richard harrison, KB5WZI Article: 219417 of rec.radio.amateur.antenna From: "CWB" References: <6487-436C4D06-493@storefull-3252.bay.webtv.net> <436fd96a_3@newsfeed.slurp.net> Subject: Re: AM Commercial radio reception Message-ID: <4C8gf.4581$Au1.2920@tornado.texas.rr.com> Date: Mon, 21 Nov 2005 00:34:08 GMT "Richard Fry" wrote in message news:436fd96a_3@newsfeed.slurp.net... > "Dave Pitzer" wrote >> ... Is there any place I can find polar graphs of commercial >> broadcast station's antenna patterns? > > ___________________ > > Dave, > > Here http://www.radio-locator.com/ is a link to a website with calculated > coverage areas/contours for US AM broadcast stations. The contours are > based on their licensed radiation patterns (directional or not), AND > ground conductivities for the geographic regions concerned. > > The polar radiation patterns of these stations most probably don't look > much like these plots, because of the heavy influence that ground > conductivity has on received field strength along the various azimuth > bearings. > > Even the real coverage contours of AM broadcast stations using omni > antennas usually are anything but omni, due to the effects of varying > ground conductivities around their various azimuth sectors and ranges. > > Have fun. Just a FYI...the contour maps at Radio-Locator.com are WRONG....the LOCAL on FM maps is actually the distant or Service Contour (1mv or 60dbu level)..LOCAL is defined as City Grade or 70dbu or 3.16mV level...which they do not show..On AM, they show lower levels on the map as well...If you want to really know what the signal level should be, draw another circle or line inside the LOCAL one they show...about the same distance between the LOCAL and Distant they show...Your line drawn will be local, their local becomes Distant and their Distant becomes Finge... Their Fringe is now DX :) Chris WB5ITT Article: 219418 of rec.radio.amateur.antenna From: "Frank" References: <1132357825.631091.7400@z14g2000cwz.googlegroups.com> <98c9a$4380f751$97d56a33$3576@ALLTEL.NET> Subject: Re: tv antenna, any simple standards that work? Message-ID: Date: Mon, 21 Nov 2005 00:43:04 GMT "Fred W4JLE" wrote in message news:98c9a$4380f751$97d56a33$3576@ALLTEL.NET... > Probably because it covered DIGITAL TV. They have a few analog channels. > The > last time I was there they had BBC1 and BBC2 on VHF. What I found > interesting is that a lot of Europe uses vertical polarization rather than > horizontal like we do. Every time I go over there it takes me a few days > to > get use to the 50 Cycle refresh rate which I perceive as flicker. But at > least the "colour" is the same from all cameras. Fred, If you notice the document (http://www.digitaltelevision.gov.uk/pdf_documents/publications/DTT_Reception_Impact_Analysis_Ver_1.0.pdf) does refer to analog transmission in the UHF band. According to http://en.wikipedia.org/wiki/VHF: "British television originally used VHF bands I and III. Television on VHF was in black and white with 405-line display. British colour television was broadcast on UHF (channels 21-69), beginning in the late 1960s. TV from then on was broadcast on both VHF and UHF, with the exception of BBC2 (which had always broadcast solely on UHF). The last British VHF TV transmitters closed down on January 3, 1985. VHF band III is now used in the UK for digital audio broadcasting. Unusually, the UK has an amateur radio allocation at 4 metres, 70-70.5 MHz." Possibly somebody from the UK could verify if all the VHF stations have in fact closed down. It is true that they use vertical polarization. The refresh rate is 25 Hz, interlaced, which is why the flicker is so noticeable. NTSC color drift was cured in the late 70s. PAL was a genuine attempt to fix the color drift problem -- with some loss of color resolution. SECAM was invented by the French to be different to everybody else. Regards, Frank Article: 219419 of rec.radio.amateur.antenna From: Chris W <1qazse4@cox.net> Subject: 1.2 GHZ collinear array Message-ID: Date: Sun, 20 Nov 2005 23:52:49 -0600 I want to build a 1.2 Ghz antenna for this tiny wireless camera receiver I have. The antenna on it uses an F connector so I am guessing it is a 75 ohm antenna. I have seen several web pages with a collinear design using 50 ohm coax cable. If I use some 75 ohm cable TV coax to make the antenna do I need to do anything else to match the antenna to the 75 ohms of the RX? Also does anyone know what eh velocity factor for the coax the cable company uses is? -- Chris W KE5GIX Gift Giving Made Easy Get the gifts you want & give the gifts they want One stop wish list for any gift, >from anywhere, for any occasion! http://thewishzone.com Article: 219420 of rec.radio.amateur.antenna From: "Richard Fry" References: <6487-436C4D06-493@storefull-3252.bay.webtv.net> <436fd96a_3@newsfeed.slurp.net> <4C8gf.4581$Au1.2920@tornado.texas.rr.com> Subject: Re: AM Commercial radio reception Date: Mon, 21 Nov 2005 06:08:09 -0600 Message-ID: <4381b7f6_5@newsfeed.slurp.net> "CWB" wrote: > Just a FYI...the contour maps at Radio-Locator.com are WRONG >....the LOCAL on FM maps is actually the distant or Service Contour >(1mv or 60dbu level)..LOCAL is defined as City Grade or 70dbu or > 3.16mV level...which they do not show..On AM, they show lower > levels on the map as well. _____________ Their maps DO correctly show the distances to the contours for the field strengths they identify. Radio-Locator picked different field strength values for the "local" etc contours than those used by the FCC, but that doesn't invalidate the Radio-Locator maps. And their choices are reasonable. For example on AM, a 2.5 mV/m signal (Radio-Locator's local contour) does provide good service to a typical cheap table radio inside a home in an urban setting. Article: 219421 of rec.radio.amateur.antenna From: "Jerry Martes" References: Subject: Re: 1.2 GHZ collinear array Message-ID: Date: Mon, 21 Nov 2005 16:41:56 GMT "Chris W" <1qazse4@cox.net> wrote in message news:shdgf.12584$ih5.1995@dukeread11... >I want to build a 1.2 Ghz antenna for this tiny wireless camera receiver I >have. The antenna on it uses an F connector so I am guessing it is a 75 >ohm antenna. I have seen several web pages with a collinear design using >50 ohm coax cable. If I use some 75 ohm cable TV coax to make the antenna >do I need to do anything else to match the antenna to the 75 ohms of the >RX? Also does anyone know what eh velocity factor for the coax the cable >company uses is? > > -- > Chris W > KE5GIX Hi Chris Are you considering building a highly directive collinear antenna like Brian Oblivion + Capt Kaboom describe on their web site? If so, be sure to use a coax that you can solder to. Some RG-6 wont take solder. The RG-6 dielectric is foamed poly, so that makes it a little more difficult to solder than to Teflon dielectric cables. The velocity of propagation of RG-6 is not constant. It depends on the manufacturer. The VP is close to 0.8, but can vary from about 0.75 to 0.85. If you plan high directivity from an end fed collinear, you will need to be very careful to build it with precision to produce a main beam thats perpendicular to it. The nice part of the "Kaboom" type collinear antenna is it is very inexpensive to build so you can build one and try it, then make another thats a bit closer to your requirements (if needed). Jerry Article: 219422 of rec.radio.amateur.antenna From: Michael Coslo Subject: Re: feedlines and strange intereactions Date: Mon, 21 Nov 2005 12:02:53 -0500 Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1132535139.707540.28330@g47g2000cwa.googlegroups.com> jgboyles@aol.com wrote: > > >>N4AST's comments are unworthy.> ---- >>Regards, Reg. > > > HI Reg, Unworthy of what? That's like saying your programs smell, but > not what they smell like-:). I for one an grateful and have used your > programs, and EZNEC. I consider them both an asset to to my knowledge > of antennas. So anyhow, is there some interesting discussion to be had on this antenna? Richard Clark started to touch on it, but I'd like to hear more. As a true dilletante (so take my advice with a grain of salt), I would have to expect that the antenna isn't going to work all that well, and the wellness of working is going to decrease as the frequency goes down. Putting more wire in the air generally works, but putting all that wire right next to another wire that is part of the same antenna could make for some issues. In "short" I suspect that your antenna will work out on the higher bands, but even if you get a match on 160, it won't be too awesome there. Some other factors with your tuning are going to be height above the ground. I always seem to misoverestimate my height above ground. Was there a suggested height for this antenna? Hopefully this helps. just remember, I'm no antenna Guru. 73 de Mike KB3EIA - Article: 219423 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Not happy new suv antenna Date: Mon, 21 Nov 2005 10:53:28 -0600 Message-ID: <21898-4381FB88-211@storefull-3251.bay.webtv.net> References: Cecil, W5DXP wrote: "There are so many Moore`s that I have no idea who I am kin too." There is a John Moore in my Houston Area Amateur Radio Club who says he is unrelated to Cecil, he is one of several Moore`s in the club, all claiming not to be related to Cecil. John Moore, however, does claim to have attended Texas A&M with Cecil. When names were chosen, it seems more would likely choose the name Moore than the name Less. Why are there not more "Mosts"? Best regards, Richard Harrison, KB5WZI Article: 219424 of rec.radio.amateur.antenna From: "W4WNT" References: <1132254478.594949.299550@g44g2000cwa.googlegroups.com> Subject: Re: Not happy new suv antenna Message-ID: Date: Mon, 21 Nov 2005 17:33:35 GMT The rubber gaskets around the rear door of SUVs are very accommodating to small coax. Since you are doing a short run, sounds like VHF/UHF, this would accommodate your vertical with an antenna clamp attached to the rear door. Could use RG-58 or RG-59 since it is a short run to your radio. Good Luck, Bill, W4WNT "Gene" wrote in message news:1132254478.594949.299550@g44g2000cwa.googlegroups.com... > Traded recently from a pickup, with external vertical whip > antenna...to a suv with wire on the window, driver side rear > window....not a happy camper, with the wire on the window...she who > must be obeyed, will not allow any non factory holes ! Thought about > stringing a wire from the front of the luggage rack to the rear of the > rack, then a small lead to the window, tapped with a clear tape , and > see if that will couple to the antenna...do not wish to use an > amplifier, or get too complicated... Any thoughts ? TIA Gene > Article: 219425 of rec.radio.amateur.antenna From: Jim Kelley Subject: Re: Loop Antennas Date: Mon, 21 Nov 2005 09:52:07 -0800 Message-ID: References: <19147-437FFAFC-563@storefull-3256.bay.webtv.net> Richard Harrison wrote: > > Since Clear Channel Communications, Infinity Broadcasting, etc. bought > most of the non-network-owned broadcast outlets, music stations have > disappeared. Clear Channel changed the music programming of the last > sizeable AM music outlet in Houston to sports programming last year. > That was when I found the 680 KHz signal from San Antonio was usually > good here 24-hours. I think they run 50-KW nondirectional day time and > 10-KW nighttime, pointed away from KNBC in San Francisco at nignt. KNBC > is 50-KW, 680 KHz, non-directional day and night. That's KNBR. KNBC is a television station in Los Angeles. http://www.radio-locator.com/cgi-bin/url?call=KNBR&service=AM 73, ac6xg Article: 219426 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Not happy new suv antenna References: <21898-4381FB88-211@storefull-3251.bay.webtv.net> Message-ID: Date: Mon, 21 Nov 2005 18:54:06 GMT Richard Harrison wrote: > Cecil, W5DXP wrote: > "There are so many Moore`s that I have no idea who I am kin too." > > There is a John Moore in my Houston Area Amateur Radio Club who says he > is unrelated to Cecil, he is one of several Moore`s in the club, all > claiming not to be related to Cecil. Strangely, most Moore's claim not to be related to me. ;-) > John Moore, however, does claim to have attended Texas A&M with Cecil. Yep, I've got the yearbook to prove it. John's a good guy. > When names were chosen, it seems more would likely choose the name Moore > than the name Less. Why are there not more "Mosts"? Actually, when the English government decreed that everyone had to adopt a last name, a host of people who lived out on The Moors adopted that last name. Some of them may not have been related even back then, except by geography. Richard, your last name might have been adopted by someone whose father was named Harry. Smith probably came from Blacksmith, Potter from a pottery maker, Johnson from John's son, etc. The Discovery Channel's "Longitude" featured the considerable talents of John Harrison, a cabinet maker more famous for his timepieces than for his cabinets. (Wonder why they didn't just use the GPS system? :-) -- 73, Cecil http://www.qsl.net/w5dxp Article: 219427 of rec.radio.amateur.antenna From: "Steve Nosko" Subject: Re: Interesting HF antenna design Date: Mon, 21 Nov 2005 14:58:02 -0600 Message-ID: References: "Caveat Lector" wrote in message news:ke2ff.173$qw.10@fed1read07... > At URL: > http://home.tiscali.ch/hb9abx/ant--abx-e.htm > CL -- I doubt, therefore I might be ! > Sorry Felix, but Isaac Asimov's built-in doubter kicks-in right-away here. ..."I decided to hand out this guide free to the contributers of this project...." HUH ? ! >> "A new, revolutionary design allows the construction >> of small HF antennas, which provide the same efficiency >> as large antennas." __same efficiency__ If it sounds too good to be true... It is larger than the average mobile antenns and, therefore, on the lower bands where you can't get a full 1/4 wave, it'll do better. 73, Steve, K,9.D;C'I Article: 219428 of rec.radio.amateur.antenna From: "Fred W4JLE" References: <5ea34$437ffe6d$97d56a33$1046@ALLTEL.NET> <15195-43810BCF-912@storefull-3252.bay.webtv.net> Subject: Re: Loop Antennas Date: Mon, 21 Nov 2005 16:09:43 -0500 Message-ID: <39581$4382439a$97d56a33$27458@ALLTEL.NET> The other station I remember as a kid was a Texas station that was physcially located in Mexico and ran a Gazillion watts. Don't remember the call but later was the home of "Wolfman Jack" I bet like me, you remember the "Dumont Television Network" :>) As a kid I was a go-fer at WXEL in Cleveland, Ohio. It was part of the Dumont network. "Richard Harrison" wrote in message news:15195-43810BCF-912@storefull-3252.bay.webtv.net... > WCKY 1530 KHz should not be omitted from any list of great radio Article: 219429 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Loop Antennas References: <5ea34$437ffe6d$97d56a33$1046@ALLTEL.NET> <15195-43810BCF-912@storefull-3252.bay.webtv.net> <39581$4382439a$97d56a33$27458@ALLTEL.NET> Message-ID: Date: Mon, 21 Nov 2005 22:05:11 GMT Fred W4JLE wrote: > The other station I remember as a kid was a Texas station that was > physcially located in Mexico and ran a Gazillion watts. Don't remember the > call ... XERF, Villa Acun~a? "n~" instead of the proper Spanish character. -- 73, Cecil http://www.qsl.net/w5dxp Article: 219430 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Not happy new suv antenna Date: Mon, 21 Nov 2005 16:18:48 -0600 Message-ID: <19147-438247C8-843@storefull-3256.bay.webtv.net> References: Cecil, W5DXP wrote: "The Discovery Channel`s "Longitude" featured the considerable talents of John Harrison, a cabinet maker more famous for his timepieces than for his cabinets. Wonder why they didn`t just use the GPS system (funny face)?" I`d like to claim kinship with John Harrison who built the first chronometer accurate enough to compute longitude, but I can`t. Parliament had offered a huge cash award for such a timepiece or other means of accurately determning longitude. John proved he had won, then tried for years to get full paynent from parliament. Finally John got an audience with the King who declared: "By God, you shall get your payment!", and he was paid. Now, John Harrison is a big feature at the National Maritime Museum at Greenwich. Some of the wooden clocks, gears and all, that John built are still in use and keeping time well. The chronometer is more like a large pocket watch. GPS is huge. You can immediately know within a few feet exactly where you are, unless you happened to be the target. There are boat trips on the Thames between London and Greenwich. If the weather is good, it is very pleasant. Best regards, Richard Harrison, KB5WZI Article: 219431 of rec.radio.amateur.antenna From: Roy Lewallen Subject: Re: Not happy new suv antenna Date: Mon, 21 Nov 2005 14:35:23 -0800 Message-ID: <11o4itbl5sk3e2e@corp.supernews.com> References: <19147-438247C8-843@storefull-3256.bay.webtv.net> I saw that program on public TV some time back, and highly recommend it -- it was very interesting. Some years ago I saw a display on timekeeping at the Smithsonian which explained and gave an example of each of the advances and innovations in clockmaking which improved timekeeping accuracy. The last item at the end of the display was a few-dollar Timex digital watch which, the caption said, was more accurate than any of the mechanical predecessors. Roy Lewallen, W7EL Richard Harrison wrote: > Cecil, W5DXP wrote: > "The Discovery Channel`s "Longitude" featured the considerable talents > of John Harrison, a cabinet maker more famous for his timepieces than > for his cabinets. Wonder why they didn`t just use the GPS system (funny > face)?" > > I`d like to claim kinship with John Harrison who built the first > chronometer accurate enough to compute longitude, but I can`t. > Parliament had offered a huge cash award for such a timepiece or other > means of accurately determning longitude. John proved he had won, then > tried for years to get full paynent from parliament. Finally John got an > audience with the King who declared: "By God, you shall get your > payment!", and he was paid. Now, John Harrison is a big feature at the > National Maritime Museum at Greenwich. Some of the wooden clocks, gears > and all, that John built are still in use and keeping time well. The > chronometer is more like a large pocket watch. > > GPS is huge. You can immediately know within a few feet exactly where > you are, unless you happened to be the target. > > There are boat trips on the Thames between London and Greenwich. If the > weather is good, it is very pleasant. > > Best regards, Richard Harrison, KB5WZI > Article: 219432 of rec.radio.amateur.antenna From: Roy Lewallen Subject: Re: Loop Antennas Date: Mon, 21 Nov 2005 17:32:21 -0800 Message-ID: <11o4t95ash97606@corp.supernews.com> References: <5ea34$437ffe6d$97d56a33$1046@ALLTEL.NET> <15195-43810BCF-912@storefull-3252.bay.webtv.net> <39581$4382439a$97d56a33$27458@ALLTEL.NET> Richard Clark wrote: > On Mon, 21 Nov 2005 16:09:43 -0500, "Fred W4JLE" > wrote: > > >>The other station I remember as a kid was a Texas station that was >>physcially located in Mexico and ran a Gazillion watts. Don't remember the >>call but later was the home of "Wolfman Jack" > > > Hi Fred, > > I listened to him too. > > XELO out of Del Rio, Texas (yeah, really across the river). Wolfman Jack (Bob Smith) is immortalized in the movie "American Graffiti", where he plays himself. He died in 1995 at age 56. There's a lot about him on the web. See, for example http://en.wikipedia.org/wiki/Wolfman_Jack. Roy Lewallen, W7EL Article: 219433 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: SWR again. Date: Tue, 22 Nov 2005 05:31:02 +0000 (UTC) Message-ID: ******* Copied from uk.radio.amateur newsgroup. ******** > Reg spoke of the SWR meter as a resistance bridge. It is possible to build a > meter that is a bridge =================================== The so-called SWR meter is ALWAYS a resistance bridge (although it may be described in other terms). In the HF, 100 watt models, the little ferrite ring is a current transformer. The turns ratio on the transformer allows the bridge resistors to be changed to values other than 50-ohms. For example a bridge resistor which is across the transmitter changes to 5000 ohms. And a bridge resistor in series with the load changes to 0.5 ohms. In both cases the power lost in the resistors falls to the order of 1% of the power which would be lost in 50 ohm resistors. The meter becomes far more power efficient. With 50-ohm bridge ratio arms the power lost in the bridge would be 75 percent of Tx power output. The 0.5-ohm resistor does not exist. Very cleverly, the input resistance of the one turn primary winding on the current transformer becomes the 0.5-ohm bridge arm. The DC seperation between primary and secondary windings on the current transformer allows the diode rectifier and moving coil DC microameter circuit to be operated very nicely all at ground potential. ---- Reg, G4FGQ The term 'meter' is incorrect. It does not 'measure' anything. It merely 'indicates'. Article: 219434 of rec.radio.amateur.antenna From: jeffreyh@Hawaii.Edu (Jeffrey Herman) Subject: Re: feedlines and strange intereactions Date: 22 Nov 2005 06:46:38 GMT Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> Reg Edwards wrote: > >Regarding the Smith Chart, I have myself never found it to be of any >use. In fact I don't know how to use it. I have nothing to add to this thread other than to say that I thought the above was an odd combination of sentences. >But enough about me. What are you doing about Bush? Because he's my Commander-in-Chief I support him in every regard. But aside from that, he's doing exactly what I'm paying him to do (with respect to my federal taxes helping to pay his salary). He's a good man but I'm afraid you've been brainwashed by the liberal media to think otherwise. 73 from Hawaii, Jeff KH6O -- Chief Petty Officer, U.S. Coast Guard Mathematics Lecturer, University of Hawaii System Article: 219435 of rec.radio.amateur.antenna Message-ID: <4382B425.5010604@killspam.internode.on.net> Date: Tue, 22 Nov 2005 17:01:09 +1100 From: Alan Peake Subject: Re: Emoto Rotators References: <437c5597$0$9984$5a62ac22@per-qv1-newsreader-01.iinet.net.au> > Depends on how much you know. If the Emoto is in the same price class > as the Yaesu and HyGain, it would be worth while to build your own > control box. I would not try to duplicate their unit; just go for > something basic with a momentary contact DPDT switch for direction, > and a 0 - 1 ma meter for an indicator. If this is a 3 wire or 4 wire > unit, forget about it. > > Tam/WB2TT The rotator has an odd connector - 6 pin from memory - but I should be able to do something about that. I really want to see the rotator's circuit before deciding if I feel like making a control unit. It shouldn't be too difficult if it comprises just a motor, potentiometer and limit switches. The most important bits to me are the mechanical parts - I can't make them. Thanks to the other poster who replied - I found most of the references on the 'net to be a bit lacking in the detail I need. Alan Article: 219436 of rec.radio.amateur.antenna From: 'Doc Subject: Re: Car Radio Reception References: <1132661313.879566.314570@g14g2000cwa.googlegroups.com> Message-ID: <5cEgf.2025$rq3.582@newssvr19.news.prodigy.com> Date: Tue, 22 Nov 2005 12:30:57 GMT Before buying a new radio try plugging the antenna firmly into the one you have now. Might be suprized. - 'Doc Article: 219437 of rec.radio.amateur.antenna From: 'Doc Subject: Re: SWR again. References: Message-ID: Date: Tue, 22 Nov 2005 12:34:31 GMT Reg, You said,"The term 'meter' is incorrect. It does not 'measure' anything. It merely 'indicates'." ... Sounds a lot like a definition of a politician. What comes out is what was fed in, with about 10% accuracy... 'Doc Article: 219438 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: SWR again. Date: Tue, 22 Nov 2005 13:45:11 +0000 (UTC) Message-ID: References: > You said,"The term 'meter' is incorrect. It does not 'measure' > anything. It merely 'indicates'." ... Sounds a lot like a definition > of a politician. What comes out is what was fed in, with about > 10% accuracy... > 'Doc Same over here except that it's only 5%. I have more faith in SWR meters with bent needles. --- Reg. Article: 219439 of rec.radio.amateur.antenna From: clvrmnky Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> Message-ID: Date: Tue, 22 Nov 2005 16:48:28 -0500 On 22/11/2005 1:46 AM, Jeffrey Herman wrote: > Reg Edwards wrote: >> Regarding the Smith Chart, I have myself never found it to be of any >> use. In fact I don't know how to use it. > > I have nothing to add to this thread other than to say that I thought > the above was an odd combination of sentences. > 'Tis odd, indeed. >> But enough about me. What are you doing about Bush? > > Because he's my Commander-in-Chief I support him in every regard. > But aside from that, he's doing exactly what I'm paying him to do (with > respect to my federal taxes helping to pay his salary). He's a good man > but I'm afraid you've been brainwashed by the liberal media to think > otherwise. > Totally off topic, but you do know what "liberal" really means when used to describe political ideals, right? I mean, you've looked it up as it is used in political studies or anthropology? This word gets a lot of use in today's polemics (especially in the US, where it has become quite the loaded term) but it is usually misapplied in this context. To the point of being used in the exact opposite from the definition. That is, not just simple connotative slip. (For some reason, the line from _The Princess Bride_ came to mind, "You keep using that word. I do not think it means what you think it means.") (Inconceivable!) Also, I'm pretty sure you don't know your president personally, so it is technically a fallacy to say "he is a good man." Perhaps you surmise >from his actions (or the second-hand, imperfect, reports of such actions) that he has qualities you admire? The problem, of course, is that just as many people could come to the opposite determination of the president being a "bad man" by the very same actions. I mean, how does one know if they are the one being brain-washed or not? I'm also puzzled why one would espouse total support of a "Commander-in-Chief" simply because he is "the Chief." I'm not singling you out, as I see examples of this sentiment everywhere (i.e., not just in the US.) It seems to go against the principles of democracy and informed citizenry. I don't think I'm exaggerating when I say that such a sentiment is more a fundamental marker of totalitarianism. Article: 219440 of rec.radio.amateur.antenna From: Jim Kelley Subject: Re: feedlines and strange intereactions Date: Tue, 22 Nov 2005 14:43:10 -0800 Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> clvrmnky wrote: > Also, I'm pretty sure you don't know your president personally, so it is > technically a fallacy to say "he is a good man." Perhaps you surmise > from his actions (or the second-hand, imperfect, reports of such > actions) that he has qualities you admire? The problem, of course, is > that just as many people could come to the opposite determination of the > president being a "bad man" by the very same actions. I mean, how does > one know if they are the one being brain-washed or not? Is saying bad things about people you don't know morally equivalent to saying good things about them? Some people believe that if it is repeated often enough and long enough, it will become so. > I'm also puzzled why one would espouse total support of a > "Commander-in-Chief" simply because he is "the Chief." The not-so clvr mnky might consider that to those for whom the current Commander-in-Chief is Commander-in-Chief, it's pretty clear whose side he is on. ac6xg Article: 219441 of rec.radio.amateur.antenna From: "Asimov" Subject: Re: feedlines and strange intereactions Message-ID: References: Date: Wed, 23 Nov 2005 11:21:02 GMT "clvrmnky" bravely wrote to "All" (22 Nov 05 16:48:28) --- on the heady topic of "Re: feedlines and strange intereactions" cl> From: clvrmnky cl> Xref: core-easynews rec.radio.amateur.antenna:220293 cl> On 22/11/2005 1:46 AM, Jeffrey Herman wrote: > Reg Edwards wrote: >> Regarding the Smith Chart, I have myself never found it to be of any >> use. In fact I don't know how to use it. > > I have nothing to add to this thread other than to say that I thought > the above was an odd combination of sentences. > cl> 'Tis odd, indeed. >> But enough about me. What are you doing about Bush? > > Because he's my Commander-in-Chief I support him in every regard. > But aside from that, he's doing exactly what I'm paying him to do (with > respect to my federal taxes helping to pay his salary). He's a good man > but I'm afraid you've been brainwashed by the liberal media to think > otherwise. [,,,] cl> I'm also puzzled why one would espouse total support of a cl> "Commander-in-Chief" simply because he is "the Chief." I'm not cl> singling you out, as I see examples of this sentiment everywhere cl> (i.e., not just in the US.) It seems to go against the principles of cl> democracy and informed citizenry. I don't think I'm exaggerating when cl> I say that such a sentiment is more a fundamental marker of cl> totalitarianism. One should never let political allegiances make one deny what one believes is true and against good judgement. Blind acceptance is to open the door to let the goosestepping brutes into the human race. I agree... A*s*i*m*o*v ... Murphy's rule of combat: Incoming fire has right of way Article: 219442 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Loop Antennas Date: Wed, 23 Nov 2005 09:34:07 -0600 Message-ID: <13799-43848BEF-36@storefull-3254.bay.webtv.net> References: Cecil, W5DXP wrote: "XERF, Villa Acun~a? "n~" instead of the proper Spanish character." Bingo! Little Acun~a has now grown to Ciudade Acun~a, Studios were in Del Rio, Texas, I believe. There is a book I found interesting about super-power broadcasting from the banks of the Rio Grande. I think the title was "Border Radio". It began with Dr. Brinkley, a chiropractor I believe, who advertised monkey and goat gland implants for remediation of erectile dysfunction. It ended with the RCA Ampliphase monster that RCA installed, and abanoned across the Rio when they could not meet specs. Consultants hired by the buyer made it work as advertised after a long struggle with RCA. Between these stories were tales of some of the other colorful characters who broadcast on these high powered stations. Best regards, Richard Harrison, KB5WZI Article: 219443 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Loop Antennas References: <13799-43848BEF-36@storefull-3254.bay.webtv.net> Message-ID: Date: Wed, 23 Nov 2005 16:12:19 GMT Richard Harrison wrote: > Between > these stories were tales of some of the other colorful characters who > broadcast on these high powered stations. I remember a couple of the advertisers from the 50's: Randy's Record Mart in Gallatin, TN and White Rose Petroleum Jelly. White Rose had a contest for unusual uses for their petroleum jelly. :-) -- 73, Cecil http://www.qsl.net/w5dxp Article: 219444 of rec.radio.amateur.antenna From: "Jerry Martes" References: <1132697249.039816.192720@g43g2000cwa.googlegroups.com> <1132699117.765855.300380@g44g2000cwa.googlegroups.com> <1132748022.940300.278840@z14g2000cwz.googlegroups.com> Subject: Re: TDA1083 IC, I need help. Message-ID: Date: Wed, 23 Nov 2005 16:47:50 GMT "MRW" wrote in message news:1132748022.940300.278840@z14g2000cwz.googlegroups.com... > Hi Dan, > > Got any other newer chip suggestions? > > I just wanted to build a small receiver. > > Thanks! Hi MrW Try Googling "one chip am/fm dadio with power amlifier tda1083". ATMEL Wireless show a complete circuit diagram, including the antenna connection. That looks like an interesting/worthwhile project. Good luck. Jerry Article: 219445 of rec.radio.amateur.antenna From: clvrmnky Subject: Re: feedlines and strange intereactions References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> <1HJff.18002$7h7.3111@newssvr21.news.prodigy.com> Message-ID: Date: Wed, 23 Nov 2005 14:22:00 -0500 On 22/11/2005 5:43 PM, Jim Kelley wrote: > clvrmnky wrote: > >> Also, I'm pretty sure you don't know your president personally, so it >> is technically a fallacy to say "he is a good man." Perhaps you >> surmise from his actions (or the second-hand, imperfect, reports of >> such actions) that he has qualities you admire? The problem, of >> course, is that just as many people could come to the opposite >> determination of the president being a "bad man" by the very same >> actions. I mean, how does one know if they are the one being >> brain-washed or not? > > Is saying bad things about people you don't know morally equivalent to > saying good things about them? Some people believe that if it is > repeated often enough and long enough, it will become so. > Your question puzzles me. I don't recall making any value statements, or mentioning any moral imperatives. People say things. Other people hear them, or hear about it from others. We can only arrive at some concrete value for abstracts like "good" or "true" by consensus and examination. >> I'm also puzzled why one would espouse total support of a >> "Commander-in-Chief" simply because he is "the Chief." > > The not-so clvr mnky might consider that to those for whom the current > Commander-in-Chief is Commander-in-Chief, it's pretty clear whose side > he is on. > We have met the enemy, and he is us! Seriously, I have no idea what you are driving at. Whose side is who on? I was speaking to the notion that tautologies such as "I support the chief because he is the chief" seem odd to me. Even the inverse is a tautology. Article: 219446 of rec.radio.amateur.antenna From: Michael Coslo Subject: Radio Shack and my education Date: Wed, 23 Nov 2005 14:28:47 -0500 Message-ID: Slightly OT, but kinda fun anyhow..... I'd been trying to locate a reasonably priced USB cable over the weekend It seems that you often pay as much for the cable as you fo for the device you are connecting to the computer. Has stereo voodoo physics entered the computer realm? Anyhow, I ended up in a Radio Shack store, found the cheapest cable I could, (20 bucks) and made the mistake of mentioning something to the salesman about the funny claims on the packages. Big mistake, I had blasphemed his religion. In the next couple minutes I learned that: Turns out that different frequencies travel at different speeds down the cable. Good cables have special formulations of wire that compensate for this. Everybody knows that! He didn't know what velocity factor was, but let me know that he had taken physics classes, so he knew what he was talking about. So why have u antenna gurus been misleading us?! Now that my eyes have been opened I understand.... Looking at an antenna, it becomes obvious that the lower the frequency, the slower the signal moves. The extra length of the antenna allows the RF to accellerate enough so that when it reached the end of the antenna, it has enough velocity to shoot out and not float straight up. Those really high frequencies are zipping by so fast that they hardly need any wire to get to TOSP (Take-off speed) Wow, I have reached true enlightenment............... - Mike KB3EIA - Article: 219447 of rec.radio.amateur.antenna From: Michael Coslo Subject: Re: SWR again. Date: Wed, 23 Nov 2005 14:36:08 -0500 Message-ID: References: Reg Edwards wrote: >>You said,"The term 'meter' is incorrect. It does not 'measure' >>anything. It merely 'indicates'." ... Sounds a lot like a definition >>of a politician. What comes out is what was fed in, with about >>10% accuracy... >> 'Doc > > > Same over here except that it's only 5%. I have more faith in SWR > meters with bent needles. A man with a watch knows the time. A man with two watches is never sure...... - Mike KB3EIA - Article: 219448 of rec.radio.amateur.antenna From: Owen Duffy Subject: Re: Radio Shack and my education Message-ID: References: Date: Wed, 23 Nov 2005 19:43:15 GMT On Wed, 23 Nov 2005 14:28:47 -0500, Michael Coslo wrote: >Slightly OT, but kinda fun anyhow..... > >I'd been trying to locate a reasonably priced USB cable over the weekend >It seems that you often pay as much for the cable as you fo for the >device you are connecting to the computer. > >Has stereo voodoo physics entered the computer realm? > >Anyhow, I ended up in a Radio Shack store, found the cheapest cable I >could, (20 bucks) and made the mistake of mentioning something to the >salesman about the funny claims on the packages. Big mistake, I had >blasphemed his religion. In the next couple minutes I learned that: > >Turns out that different frequencies travel at different speeds down the >cable. Good cables have special formulations of wire that compensate for >this. > > Everybody knows that! > > He didn't know what velocity factor was, but let me know that he had >taken physics classes, so he knew what he was talking about. > > So why have u antenna gurus been misleading us?! > > > Now that my eyes have been opened I understand.... > > Looking at an antenna, it becomes obvious that the lower the frequency, >the slower the signal moves. The extra length of the antenna allows the >RF to accellerate enough so that when it reached the end of the antenna, >it has enough velocity to shoot out and not float straight up. Those >really high frequencies are zipping by so fast that they hardly need any >wire to get to TOSP (Take-off speed) > > Wow, I have reached true enlightenment............... Mike, sounds like he is well on the way to a ham licence... did you sign him up? Owen -- Article: 219449 of rec.radio.amateur.antenna From: Allodoxaphobia Subject: Re: Radio Shack and my education Date: 23 Nov 2005 20:29:37 GMT Message-ID: References: On Wed, 23 Nov 2005 19:43:15 GMT, Owen Duffy wrote: > On Wed, 23 Nov 2005 14:28:47 -0500, Michael Coslo wrote: > >>Slightly OT, but kinda fun anyhow..... >> >>I'd been trying to locate a reasonably priced USB cable over the weekend >>It seems that you often pay as much for the cable as you fo for the >>device you are connecting to the computer. >> >>Has stereo voodoo physics entered the computer realm? >> >>Anyhow, I ended up in a Radio Shack store, found the cheapest cable I >>could, (20 bucks) and made the mistake of mentioning something to the >>salesman about the funny claims on the packages. Big mistake, I had >>blasphemed his religion. In the next couple minutes I learned that: >> >>Turns out that different frequencies travel at different speeds down the >>cable. Good cables have special formulations of wire that compensate for >>this. >> >> Everybody knows that! >> >> He didn't know what velocity factor was, but let me know that he had >>taken physics classes, so he knew what he was talking about. > > Mike, sounds like he is well on the way to a ham licence... did you > sign him up? Too much ruckus has been focused on the 'No Code License' issue. The ruckus should, instead, be focused on the 'No Clue License'. Jonesy -- Marvin L Jones | jonz | W3DHJ | linux Pueblo, Colorado | @ | Jonesy | OS/2 __ 38.24N 104.55W | config.com | DM78rf | SK Article: 219450 of rec.radio.amateur.antenna From: Michael Coslo Subject: Re: Radio Shack and my education Date: Wed, 23 Nov 2005 15:42:20 -0500 Message-ID: References: <3_qdnUi0xLlxWhnenZ2dnUVZ_sCdnZ2d@crocker.com> Dave wrote: > "Michael Coslo" wrote in message > news:dm2fte$1f6m$1@f04n12.cac.psu.edu... > >>Slightly OT, but kinda fun anyhow..... >> >>I'd been trying to locate a reasonably priced USB cable over the weekend >>It seems that you often pay as much for the cable as you fo for the device >>you are connecting to the computer. >> >>Has stereo voodoo physics entered the computer realm? >> >>Anyhow, I ended up in a Radio Shack store, found the cheapest cable I >>could, (20 bucks) and made the mistake of mentioning something to the >>salesman about the funny claims on the packages. Big mistake, I had >>blasphemed his religion. In the next couple minutes I learned that: >> >>Turns out that different frequencies travel at different speeds down the >>cable. Good cables have special formulations of wire that compensate for >>this. >> >>Everybody knows that! > > > you didn't know that? its called frequency dispersion. fortunately it is a > relatively small effect and in normal bandwidths hams use it can be ignored. > for very high bandwidth signals like high speed digital stuff it can badly > distort the waveforms and can be the limiting factor in determining maximum > cable lengths without repeaters. Oh yes, I've heard of dispersion. But that isn't what the guy was talking about in our context. He was talking about gross effects. - Mike KB3EIA - Article: 219451 of rec.radio.amateur.antenna From: Owen Duffy Subject: Re: Radio Shack and my education Message-ID: References: Date: Wed, 23 Nov 2005 21:31:09 GMT On 23 Nov 2005 20:29:37 GMT, Allodoxaphobia wrote: >Too much ruckus has been focused on the 'No Code License' issue. >The ruckus should, instead, be focused on the 'No Clue License'. I never mentioned the no-code licence... we got over that over a year ago down under. I suggest it is not a matter of the no-clue licence, but the no-clue licensee, who could be licensed in any grade. Owen (Spelling correct for country of origin!) -- Article: 219452 of rec.radio.amateur.antenna From: Jim - NN7K Subject: Re: Radio Shack and my education References: Message-ID: Date: Wed, 23 Nov 2005 22:54:07 GMT Next time try an outfit called "Big Lots"-- they had packs of 3 USB cables- for about 8 bucks, if memory serves!! And, their clerks are dumb, and KNOW that they are dumb, so no lecture from them, if you can even find one that "speaka d' english " ! They are an overstock/closeout specialty store, and have everything from food to computer disks and small handtools! Relatively inexpensive, too-- Jim NN7K Michael Coslo wrote: > Slightly OT, but kinda fun anyhow..... > > I'd been trying to locate a reasonably priced USB cable over the weekend > It seems that you often pay as much for the cable as you fo for the > device you are connecting to the computer. > > Has stereo voodoo physics entered the computer realm? > > Anyhow, I ended up in a Radio Shack store, found the cheapest cable I > could, (20 bucks) and made the mistake of mentioning something to the > salesman about the funny claims on the packages. Big mistake, I had > blasphemed his religion. In the next couple minutes I learned that: > > Turns out that different frequencies travel at different speeds down the > cable. Good cables have special formulations of wire that compensate for > this. > > Everybody knows that! > > He didn't know what velocity factor was, but let me know that he had > taken physics classes, so he knew what he was talking about. > > So why have u antenna gurus been misleading us?! > > > Now that my eyes have been opened I understand.... > > Looking at an antenna, it becomes obvious that the lower the > frequency, the slower the signal moves. The extra length of the antenna > allows the RF to accellerate enough so that when it reached the end of > the antenna, it has enough velocity to shoot out and not float straight > up. Those really high frequencies are zipping by so fast that they > hardly need any wire to get to TOSP (Take-off speed) > > Wow, I have reached true enlightenment............... > > > > - Mike KB3EIA - > > > Article: 219453 of rec.radio.amateur.antenna From: Jim Higgins Subject: Re: Radio Shack and my education Message-ID: References: Date: Thu, 24 Nov 2005 01:04:31 GMT On Wed, 23 Nov 2005 14:28:47 -0500, Michael Coslo wrote: >Slightly OT, but kinda fun anyhow..... > >I'd been trying to locate a reasonably priced USB cable over the weekend >It seems that you often pay as much for the cable as you fo for the >device you are connecting to the computer. > >Has stereo voodoo physics entered the computer realm? > >Anyhow, I ended up in a Radio Shack store, found the cheapest cable I >could, (20 bucks) and made the mistake of mentioning something to the >salesman about the funny claims on the packages. Big mistake, I had >blasphemed his religion. In the next couple minutes I learned that: > >Turns out that different frequencies travel at different speeds down the >cable. Good cables have special formulations of wire that compensate for >this. > > Everybody knows that! > > He didn't know what velocity factor was, but let me know that he had >taken physics classes, so he knew what he was talking about. > > So why have u antenna gurus been misleading us?! > > Now that my eyes have been opened I understand.... > > Looking at an antenna, it becomes obvious that the lower the frequency, >the slower the signal moves. The extra length of the antenna allows the >RF to accellerate enough so that when it reached the end of the antenna, >it has enough velocity to shoot out and not float straight up. Those >really high frequencies are zipping by so fast that they hardly need any >wire to get to TOSP (Take-off speed) > > Wow, I have reached true enlightenment............... > > - Mike KB3EIA - Must be made from all that highly oxygenated copper left over after separating out the oxygen free copper required for high quality audio cables. ;-) I was in a RS store in Norristown, PA about 1988 or so and overheard a sales person overselling a young customer on a CB whip antenna by telling him the graphite whip was the best because all the fibers were aligned in parallel for a stronger signal. He added that it was called a whip antenna because it waved in the wind as you drove along and "whipped out the signal." I told the kid (customer) to buy the stiffer antenna, which was the cheaper fiberglass one, because it would stand up straighter at road speed and that the rest of it was utter BS. RS Motto #1 - You have questions; we have cell phones. RS Motto #2 - You can buy better, but you can't pay more. I think the latter applies to their cables. 73 de Jim, KB3PU Article: 219454 of rec.radio.amateur.antenna From: ml Subject: vert dipole vs vert Message-ID: Date: Thu, 24 Nov 2005 01:37:08 GMT i was trying to figure loosly in real world case what the difference would be (generally speaking) between say a verticle all band commercial antenna on my roof (of my tall apt building) i'd naturally install it's radial kit vs a equal all band (yeah i know it'd be tall) virticle dipole (tweeked w/a tuner sgc at feedpoint would i suspect they would perform about the same or dramatically different? all band defined as 80-10m thanks all and happy thanks giving Article: 219455 of rec.radio.amateur.antenna From: "Fred W4JLE" Subject: Happy Thanksgiving Date: Wed, 23 Nov 2005 21:55:58 -0500 Message-ID: A happy Thanksgiving to all... May your day be a joyous one with friends and family. 73 Fred W4JLE / NNN0AAG Article: 219456 of rec.radio.amateur.antenna From: Bob Miller Subject: Re: Radio Shack and my education Message-ID: References: Date: Thu, 24 Nov 2005 03:51:29 GMT On Wed, 23 Nov 2005 14:28:47 -0500, Michael Coslo wrote: >Slightly OT, but kinda fun anyhow..... > >.... > > Wow, I have reached true enlightenment............... > > > > - Mike KB3EIA - > > My favorite RShack items are the $100+ "Monster" cables to hook up TV/DVD players. Gotta get those optical electrons flowing just right... bob k5qwg Article: 219457 of rec.radio.amateur.antenna From: "Caveat Lector" References: Subject: Re: Happy Thanksgiving Message-ID: Date: Wed, 23 Nov 2005 20:19:07 -0800 And likewise Fred - hope your holidays are merry and bright -- CL -- I give thanks, therefore I am ! "Fred W4JLE" wrote in message news:d5d2e$43852bc0$97d56a33$6604@ALLTEL.NET... >A happy Thanksgiving to all... May your day be a joyous one with friends >and > family. > > 73 Fred W4JLE / NNN0AAG > > Article: 219458 of rec.radio.amateur.antenna From: jeffreyh@Hawaii.Edu (Jeffrey Herman) Subject: Re: feedlines and strange intereactions Date: 24 Nov 2005 04:26:36 GMT Message-ID: References: <1132157973.945787.48940@g14g2000cwa.googlegroups.com> clvrmnky wrote: > Also, I'm pretty sure you don't know your president personally, so it is > technically a fallacy to say "he is a good man." We judge people daily by their actions and their stated beliefs. His actions exactly follow his beliefs: Freedom is a God given right, and we will do everything in our power to help those that are oppressed. > Perhaps you surmise > from his actions (or the second-hand, imperfect, reports of such > actions) that he has qualities you admire? The problem, of course, is > that just as many people could come to the opposite determination of the > president being a "bad man" by the very same actions. I mean, how does > one know if they are the one being brain-washed or not? Fundamental differences in what people believe (e.g., preemptive action versus complacency) will determine their opinion. >Is saying bad things about people you don't know morally equivalent to >saying good things about them? I'm not convinced that saying bad things about someone you don't know has any moral value at all, unless one's negative image of that person is based upon that person's actions and beliefs. > I'm also puzzled why one would espouse total support of a > "Commander-in-Chief" simply because he is "the Chief." You're puzzled due to the fact that you've never served in the armed forces of the United States. (Follow-ups set to email.) 73, Jeff KH6O -- Chief Petty Officer, U.S. Coast Guard Mathematics Lecturer, University of Hawaii System Article: 219459 of rec.radio.amateur.antenna From: "David G. Nagel" Subject: Re: Plans for B&W BWD-65 & BWD-90 Folded Dipole Balun & Terminating Date: Wed, 23 Nov 2005 22:33:25 -0600 Message-ID: <11oagkugp592t2f@corp.supernews.com> References: <11nn4unsmn4ib2@corp.supernews.com> <11no2k7ascst16b@corp.supernews.com> py8elo wrote: > Hi Dave, > The resistor is manufactured right here under indent in Brazil, > the balun I build for myself using 8 ferrite beads in material 43 OD = > 15mm ID = 8mm... > with each 4 of them I make a tube gluing them and soon after I glue the > two tubes forming a binocular core. In it I wind two turns of 16AWG wire > and a bifilar wound of 4 turns done with the same wire on the first 2 > turns...Of this wound, I joint the begins of a wire in order to the end > of the other wire, placing them in against-phase...The extremities that > remain will be the high impedance (about 800 Ohms) out to the antenna, > them points that were united will join to one of the points of the > first wound, which will go to the GND and the point that it remains of > the first wound will be the inner of the 50 Ohms coax connector > (SO239)... But, it is for low power power... For 1500 Watts you should > find the core and the appropriate wire... > I hope it can help you... > Best 73īs, > Silva. > PY8ELO > David G. Nagel Wrote: > >>Silva; >> >>No reason why your plan should not work. It might require differend >>spacing but that is what amateur radios if for: experimentation. >>I will give it a try. Where did you get your balun or how did you make >>it? Is there a web page showing how? >> >>Dave WD9BDZ >> >> >>py8elo wrote: >> >>Hi Dave, >>I use a 1K Ohms resistor and a 16:1 balun. But you can use a 600 Ohms >>resistor an a 12:1 balun. >>I hope it can help you. >>Best 73īs, >>Silva PY8ELO. >> >>David G. Nagel Wrote: >> >>Dave; >> >>The only source of resistors and baluns that I have found suitable for >>making a B&W antenna is B&W. The terminating resistor is 600 ohms >>non-inductive i.e. carbon. The balun is 12 to 1 i.e. 600:50. >> >>If you do find instructions on making the balun please let me know. I >>use my B&W BWD-90 daily and it does the job I want it to do. I need >>broad band instant QSY for my radio. >> >>Dave WD9BDZ >> >> >>py8elo wrote: >> >>Hi Dave, >>I believe the resistor should not be inductive and it should have at >>least 30% of the transmission power therefore, for 1500 Watts it >>should >>be of at least 500 Watts. >>I build the balun for this antenna (andthe antenna) but I believe in >>your country is not difficult to acquire it. >>I hope it can help you. >>VY 73īs, >>Silva. >>PY8ELO >> >>Dave Wrote: >> >>I'd like to build a replica of the B&W 65 or 90 folded dipole antenna. >> >>I know that there are a lot of arguments against this type of antenna >>but for the convienience, I would like to have one anyway. >> >>$220 - $250 seems a bit steep to buy one. >> >>I have read L.B. Cebik's article on Terminated Wideband Dipoles, >>http://www.cebik.com/wbfd.html but have been unable to find a source >>for the 800-900 ohm resistor or plans for a suitable 16:1 balun. >> >>The only resistors of that value and wattage I have found are >>wirewounds which I assume are not suitable because they are inductive. >> >>For an antenna to handle legal limit 1500 watts is it necessary for >>the terminating resistor to be 1500 watts? It seems to me that you >>would hope that the majority of the power would be dissappated by the >>wire and not the resistor. >> >>Does anyone know where I can find a plan for the balun (or a resonably >>priced commercially made one)? How about the resistor? >> >>Thanks, >> >>Dave >> >> >> >> >> >> > > > Thanks for the information. Who makes the resistor. Can they export to the USA? Dave WD9BDZ Article: 219460 of rec.radio.amateur.antenna From: "David G. Nagel" Subject: Re: Radio Shack and my education Date: Wed, 23 Nov 2005 22:40:38 -0600 Message-ID: <11oah2eq48tqjef@corp.supernews.com> References: <3_qdnUi0xLlxWhnenZ2dnUVZ_sCdnZ2d@crocker.com> Iitoi wrote: > Michael Coslo Wrote: > >>Turns out that different frequencies travel at different speeds down the >>cable. Good cables have special formulations of wire that compensate for >>this. >> > > > You can increase the velocity factor (and shorten the antenna) by using > a good grade of Carnuba automobile wax to make the antenna slipperyer, > which (because of skin effect) allows the signal to accelerate faster. > > The Man in the Maze > QRV from Baboquivari Peak, AZ > > Yah but it makes receiving signals harder because the incoming radio waves find it hard to stick to the antenna. They slip off in the wind. Article: 219461 of rec.radio.amateur.antenna From: gm4jnw Subject: Wtd Windom 80 special Date: Thu, 24 Nov 2005 14:25:29 +0000 Message-ID: As above please email with price. Located in Cumbria - Thanks Article: 219462 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Radio Shack and my education References: Message-ID: <9Amhf.24745$Zv5.22006@newssvr25.news.prodigy.net> Date: Thu, 24 Nov 2005 17:16:53 GMT Dave Heil wrote: > I told > the salesman what I was looking for, an 8-pin Jones plug/socket set. I made the mistake at RS of asking for a Molex connector. -- 73, Cecil http://www.qsl.net/w5dxp Article: 219463 of rec.radio.amateur.antenna From: Paul Taylor Subject: Antenna reception theory Date: Thu, 24 Nov 2005 18:25:21 +0000 Message-ID: Hi, I am looking for an explanation of how an antenna receives a signal due to the E-field of an electromagnetic wave. I have looked in some books, and can understand transmission, but the books I have looked in don't explain reception. I have found an explanation of how the H-field induces a signal in a loop antenna: a changing magnetic flux will induce a current. But what about the E-field and a dipole antenna? I guess that the E-field causes electrons to move in the antenna wire, because in a solid conductor, electrons will move until the E-field inside the solid is cancelled out? I have googled but having difficulty finding a good explanation. Any pointers? Thanks & regards, Paul. -- Remove _rem_ before replying by email. Article: 219464 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: Antenna reception theory Date: Thu, 24 Nov 2005 18:47:04 +0000 (UTC) Message-ID: References: "Paul Taylor" wrote in message news:pan.2005.11.24.18.25.20.956624@virgin.net... > Hi, > > I am looking for an explanation of how an antenna receives a signal due > to the E-field of an electromagnetic wave. > > I have looked in some books, and can understand transmission, but the > books I have looked in don't explain reception. > > I have found an explanation of how the H-field induces a signal in a loop > antenna: a changing magnetic flux will induce a current. > > But what about the E-field and a dipole antenna? I guess that the E-field > causes electrons to move in the antenna wire, because in a solid > conductor, electrons will move until the E-field inside the solid is > cancelled out? > > I have googled but having difficulty finding a good explanation. =================================== It is impossible for an E-field to exist without an H-field. Therefore, antennas of all sorts receive signals in the same way as a simple loop. Calculations can begin using either the E-field or the H-field but they both give the same answer. ---- Reg. Article: 219465 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: Radio Shack and my education Date: Thu, 24 Nov 2005 18:57:21 +0000 (UTC) Message-ID: References: > > > > I'd been trying to locate a reasonably priced USB cable over the weekend > > It seems that you often pay as much for the cable as you fo for the > > device you are connecting to the computer. > > ====================================== It's quite legal for traders to charge whatever price they think the buyer can afford. On the other hand, it is also quite legal for the buyer to haggle about it. It's entirely up to you if you are unhappy. ---- Reg. Article: 219466 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Antenna reception theory References: Message-ID: <8nphf.18266$BZ5.14736@newssvr13.news.prodigy.com> Date: Thu, 24 Nov 2005 20:27:48 GMT Paul Taylor wrote: > I have looked in some books, and can understand transmission, but the > books I have looked in don't explain reception. This is another example of quantum physics being easier to understand than Maxwell's equations. RF photons are absorbed by free electrons in the copper antenna causing RF currents to flow in the antenna wire. -- 73, Cecil http://www.qsl.net/w5dxp Article: 219467 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: Antenna reception theory Date: Thu, 24 Nov 2005 20:57:50 +0000 (UTC) Message-ID: References: <8nphf.18266$BZ5.14736@newssvr13.news.prodigy.com> "Cecil Moore" wrote > This is another example of quantum physics being easier > to understand than Maxwell's equations. RF photons are > absorbed by free electrons in the copper antenna causing > RF currents to flow in the antenna wire. ======================================== So how does a dielectric antenna work? ---- Reg. Article: 219468 of rec.radio.amateur.antenna From: "Michael" Subject: Re: Radio Shack and my education Date: Fri, 25 Nov 2005 09:32:53 -0800 Message-ID: <11ocbjrd4j4ar74@corp.supernews.com> References: My son took and electronics course at Benson High School in Portland Oregon. The teacher was totally clueless and just made things up as he went along. One of them was that the higher the voltage on a wire, the faster it travels in the wire. It took me all day to make my son believe that his teacher was just a clueless sot and to understand ohms law. From my son's perspective, a teacher must really know something to be a teacher. Sadly, this is far from true. The good news was that I was forced to take a more active part in his education about electronics. We built and tested projects together and it was good for both of us. Article: 219469 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Antenna reception theory References: <8nphf.18266$BZ5.14736@newssvr13.news.prodigy.com> Message-ID: <0hqhf.23531$q%.14128@newssvr12.news.prodigy.com> Date: Thu, 24 Nov 2005 21:29:32 GMT Reg Edwards wrote: > So how does a dielectric antenna work? I'm not sure since I don't find it in any of my references including ARRL, Kraus, Balanis, and the IEEE Dictionary. Is it a waveguide where the inside air is replaced by a dielectric? -- 73, Cecil http://www.qsl.net/w5dxp Article: 219470 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Radio Shack and my education References: <11ocbjrd4j4ar74@corp.supernews.com> Message-ID: Date: Thu, 24 Nov 2005 21:34:13 GMT Michael wrote: > From my son's perspective, a teacher must really know something to be a > teacher. Sadly, this is far from true. When I was student-teaching in the early 60's, the regular physics teacher told his students that transistors were made out of geranium. :-) -- 73, Cecil http://www.qsl.net/w5dxp Article: 219471 of rec.radio.amateur.antenna From: Phil Wheeler Subject: Re: Radio Shack and my education References: <11ocbjrd4j4ar74@corp.supernews.com> Message-ID: <6Trhf.46856$Hs.45544@tornado.socal.rr.com> Date: Thu, 24 Nov 2005 23:18:26 GMT Michael wrote: > My son took and electronics course at Benson High School in Portland Oregon. > The teacher was totally clueless and just made things up as he went along. Ah yes. I attended Bensen Tech (so it was called then) in the Fall of 1953. We were taught to check light sockets for electricity be removing the bulb and putting our fingers in them. Harmless fun :-) Article: 219472 of rec.radio.amateur.antenna Message-ID: <4386528A.19A3CD1D@nospam.com> From: USB_Cable_Dude Subject: Re: Radio Shack and my education References: Date: Thu, 24 Nov 2005 23:53:47 GMT Home Depot, GE brand $ 9.99 6 foot, also other pc accessories under $ 10.00 usb dude Michael Coslo wrote: > Slightly OT, but kinda fun anyhow..... > > I'd been trying to locate a reasonably priced USB cable over the weekend > It seems that you often pay as much for the cable as you fo for the > device you are connecting to the computer. > > Has stereo voodoo physics entered the computer realm? > > Anyhow, I ended up in a Radio Shack store, found the cheapest cable I > could, (20 bucks) and made the mistake of mentioning something to the > salesman about the funny claims on the packages. Big mistake, I had > blasphemed his religion. In the next couple minutes I learned that: > > Turns out that different frequencies travel at different speeds down the > cable. Good cables have special formulations of wire that compensate for > this. > > Everybody knows that! > > He didn't know what velocity factor was, but let me know that he had > taken physics classes, so he knew what he was talking about. > > So why have u antenna gurus been misleading us?! > > Now that my eyes have been opened I understand.... > > Looking at an antenna, it becomes obvious that the lower the frequency, > the slower the signal moves. The extra length of the antenna allows the > RF to accellerate enough so that when it reached the end of the antenna, > it has enough velocity to shoot out and not float straight up. Those > really high frequencies are zipping by so fast that they hardly need any > wire to get to TOSP (Take-off speed) > > Wow, I have reached true enlightenment............... > > - Mike KB3EIA - Article: 219473 of rec.radio.amateur.antenna From: "Tom Donaly" Subject: Re: Antenna reception theory References: <8nphf.18266$BZ5.14736@newssvr13.news.prodigy.com> <0hqhf.23531$q%.14128@newssvr12.news.prodigy.com> Message-ID: Date: Fri, 25 Nov 2005 00:20:09 GMT Cecil Moore wrote: > Reg Edwards wrote: > >> So how does a dielectric antenna work? > > > I'm not sure since I don't find it in any of my > references including ARRL, Kraus, Balanis, and > the IEEE Dictionary. Is it a waveguide where the > inside air is replaced by a dielectric? In the third edition of the _Antenna Engineering Handbook_ there is an article on surface-wave antennas which includes dielectric antennas starting on page 12-8. 73, Tom Donaly, KA6RUH Article: 219474 of rec.radio.amateur.antenna Date: Thu, 24 Nov 2005 18:46:34 -0600 From: Tom Ring Subject: Re: Radio Shack and my education References: Message-ID: <43865eea$0$32203$39cecf19@news.twtelecom.net> Owen Duffy wrote: > On 23 Nov 2005 20:29:37 GMT, Allodoxaphobia > wrote: > > > >>Too much ruckus has been focused on the 'No Code License' issue. >>The ruckus should, instead, be focused on the 'No Clue License'. > > > I never mentioned the no-code licence... we got over that over a year > ago down under. > > I suggest it is not a matter of the no-clue licence, but the no-clue > licensee, who could be licensed in any grade. > > Owen > (Spelling correct for country of origin!) > -- Correct. I have personally met more extras without a clue than generals, and that's not percentage-wise. Your personal mileage may vary, but a lot of extras seem to be really code oriented or contest oriented, and did nothing but memorize the technical questions answers (US) to pass. I do not maean to disparage anyone who got their license by legitimate means. Wasn't there a scandal around that sort of thing a while ago. The name West comes to mind, but I truthfully don't remember anything more than that. tom K0TAR Article: 219475 of rec.radio.amateur.antenna From: "Andy" References: Subject: Re: Wtd Windom 80 special Message-ID: Date: Fri, 25 Nov 2005 01:04:11 GMT You can normally find them on e-bay for around 30 to 40 UK pounds worth a look. "gm4jnw" wrote in message news:BFAB7DD9.23E3%gm4jnw@gmail.com... > As above please email with price. > > Located in Cumbria - Thanks > Article: 219476 of rec.radio.amateur.antenna Date: Thu, 24 Nov 2005 19:01:57 -0600 From: Tom Ring Subject: Re: Radio Shack and my education References: Message-ID: <43866294$0$3756$39cecf19@news.twtelecom.net> Dave Heil wrote: > Michael Coslo wrote: > >> Slightly OT, but kinda fun anyhow..... >> >> I'd been trying to locate a reasonably priced USB cable over the >> weekend It seems that you often pay as much for the cable as you fo >> for the device you are connecting to the computer. >> >> Has stereo voodoo physics entered the computer realm? >> >> Anyhow, I ended up in a Radio Shack store, found the cheapest cable I >> could, (20 bucks) and made the mistake of mentioning something to the >> salesman about the funny claims on the packages. Big mistake, I had >> blasphemed his religion. In the next couple minutes I learned that: >> >> Turns out that different frequencies travel at different speeds down >> the cable. Good cables have special formulations of wire that >> compensate for this. >> >> Everybody knows that! >> >> He didn't know what velocity factor was, but let me know that he >> had taken physics classes, so he knew what he was talking about. >> >> So why have u antenna gurus been misleading us?! >> >> >> Now that my eyes have been opened I understand.... >> >> Looking at an antenna, it becomes obvious that the lower the >> frequency, the slower the signal moves. The extra length of the >> antenna allows the RF to accellerate enough so that when it reached >> the end of the antenna, it has enough velocity to shoot out and not >> float straight up. Those really high frequencies are zipping by so >> fast that they hardly need any wire to get to TOSP (Take-off speed) >> >> Wow, I have reached true enlightenment............... > > > Funny that you brought this up today, Mike. I happened to hit my local > RadShack yesterday in search of a Cinch-Jones power connector. I told > the salesman what I was looking for, an 8-pin Jones plug/socket set. He > asked if I was looking for a microphone connector. I explained what the > Jones plugs looked like and told him that they used to be standard fare > in at Radio Shack and that they stocked them in 2, 4 and 8 pin > varieties. He told me that he'd never seen nor heard of them. > > I told him that I could likely use a strip of the European-style nylon > electrical connectors with screw terminals. He'd never heard of those > and said RadShack didn't stock them. I walked to a different section of > the store and pulled two of them off the rack. > > I've gotten into several heated discussions with audio weenies over > oxygen-free cable, gold-plated connectors, carbon vs. metal film > resistors and mylar vs. paper capacitors. All of these guys swore up > and down that they could hear a difference in one item vs. the other. > I've offered to set up blind tests to see if they could, but none would > ever take me up on the offer. > > Dave K8MN > My old roommate and I used to build biamped, pink noise equalized systems for the bars in the northern NY area in the late 70's early 80's. All Altec speakers with homemade Altec cabinet designs per their white papers. There was a speaker comparison being done at a local place by a company I don't remember which was promoting a new whizbang super speaker. It had some new tweeter assembly. They had a blind test with 3 speakers behind an audio transparent curtain. They said their's was there, a Kenwood set was there, and an Altec set was there. We said (order presented) #1 was Kenwood, #2 Altec, #3 crap. #2 by far the best. They said we nailed it brand wise, and were not happy with us otherwise. Happened more than once, too. A lot of nonsense was happening then, like flame tweeters and other junk. And from what I've seen, nothing has changed, Bose is still selling millions of dollars of crap. tom K0TAR Article: 219477 of rec.radio.amateur.antenna Date: Thu, 24 Nov 2005 19:06:42 -0600 From: Tom Ring Subject: Re: Happy Thanksgiving References: Message-ID: <438663b1$0$3759$39cecf19@news.twtelecom.net> Fred W4JLE wrote: > A happy Thanksgiving to all... May your day be a joyous one with friends and > family. > > 73 Fred W4JLE / NNN0AAG > > Mmmmmmmmm, Turducken.... tom K0TAR Article: 219478 of rec.radio.amateur.antenna From: Cecil Moore Subject: Re: Antenna reception theory References: <8nphf.18266$BZ5.14736@newssvr13.news.prodigy.com> <0hqhf.23531$q%.14128@newssvr12.news.prodigy.com> Message-ID: Date: Fri, 25 Nov 2005 01:18:23 GMT Tom Donaly wrote: > In the third edition of the _Antenna Engineering > Handbook_ there is an article on surface-wave antennas > which includes dielectric antennas starting on page > 12-8. I'll take a look the next time I'm over at Texas A&M. In a nutshell, where does the radiation come from? -- 73, Cecil http://www.qsl.net/w5dxp Article: 219479 of rec.radio.amateur.antenna From: "Asimov" Subject: Re: Radio Shack and my education Message-ID: References: <9Amhf.24745$Zv5.22006@newssvr25.news.prodigy.net> Date: Fri, 25 Nov 2005 05:11:03 GMT "Cecil Moore" bravely wrote to "All" (24 Nov 05 17:16:53) --- on the heady topic of "Re: Radio Shack and my education" CM> From: Cecil Moore CM> Xref: core-easynews rec.radio.amateur.antenna:220329 CM> Dave Heil wrote: > I told > the salesman what I was looking for, an 8-pin Jones plug/socket set. CM> I made the mistake at RS of asking for a Molex connector. But I'll bet they could have found you a Molex/RCA adapter! ;-) A*s*i*m*o*v ... Sho-ping. Martial art using technique of kew-pon. Article: 219480 of rec.radio.amateur.antenna From: "Asimov" Subject: Re: Antenna reception theory Message-ID: References: Date: Fri, 25 Nov 2005 05:11:05 GMT "Tim Wescott" bravely wrote to "All" (24 Nov 05 11:49:57) --- on the heady topic of "Re: Antenna reception theory" TW> From: Tim Wescott TW> Xref: core-easynews rec.radio.amateur.antenna:220333 TW> Paul Taylor wrote: > Hi, > > I am looking for an explanation of how an antenna receives a signal due > to the E-field of an electromagnetic wave. > TW> Transmission and reception work essentially the same way -- if an TW> antenna induces a certain field pattern in space, then that same field TW> pattern will induce the same voltages going the other way. TW> Most books spend about that much space telling you about the TW> principal, then use the rest of the time telling you how antennas TW> transmit, leaving it to you to figure out how they receive. For antenna to receive it must also transmit part of the signal it intercepts. Now that confuses this discussion a little more, doesn't it?! A*s*i*m*o*v ... I like the word `indolence.' It makes my laziness seem classy.