Article: 215334 of rec.radio.amateur.antenna Date: Tue, 19 Jul 2005 10:41:54 -0500 From: Cecil Moore Subject: Re: Can you solve this 2? References: <42d98824$1_1@spool9-west.superfeed.net> <42d9cae6$1_2@spool9-west.superfeed.net> <42da564b$1_1@spool9-west.superfeed.net> <4g5ld19psd1lh96m520bcnhp2rnkd8bqkg@4ax.com> <42dc1f6b$1_2@spool9-west.superfeed.net> <42dca328$1_1@spool9-west.superfeed.net> <42dcb198$1_2@spool9-west.superfeed.net> <444qd1h657spv8eviest458n27ha2j6knj@4ax.com> Message-ID: <42dd206d$1_2@spool9-west.superfeed.net> Richard Clark wrote: > You are indeed the Holy Cowboy of the blind Sacred Longhorn. ;-) No Sacred Longhorns around here. Texas Aggies barbeque longhorns at every (few and far between) opportunity. -- 73, Cecil, http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- Article: 215335 of rec.radio.amateur.antenna From: drwxr-xr-x Subject: Re: Looking for brains my are small Date: 19 Jul 2005 16:02:33 GMT Message-ID: References: <7eGdnbOfidfv7EHfRVn-ig@adelphia.com>

On Mon, 18 Jul 2005 23:52:41 -0400, Jennie wrote: > This is a multi-part message in MIME format. > > _------=_NextPart_000_248A_01C58BF3.C8CE8A60 > Content-Type: text/plain; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > --=20 > > "Jennie" wrote in message = > news:guSdncI2ethh7EHfRVn-rQ@adelphia.com... > > --=20 > > "Jennie" wrote in message = > news:7eGdnbOfidfv7EHfRVn-ig@adelphia.com... > > --=20 > > _------=_NextPart_000_248A_01C58BF3.C8CE8A60 > Content-Type: text/html; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > >[HTML>[HEAD> > charset=3Diso-8859-1"> > > > >[BODY bgColor=3D#ffffff> >

This is basically what i am trying to do for 10-40 = > meter at=20 >

href=3D"http://www.g3ycc.karoo.net/w3edp.htm">http://www.g3ycc.karoo.net/= > w3edp.htm

My zm-2 will act as the cap circuit....

--

Bill
KI4HPZ

style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = > BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> >
"Jennie" < href=3D"mailto:hnix@adelphia.net">hnix@adelphia.net>=20 > wrote in message = > href=3D"news:guSdncI2ethh7EHfRVn-rQ@adelphia.com">news:guSdncI2ethh7EHfRV= > n-rQ@adelphia.com...
>
I will be using the zm-2 tuner with a = > ft-817...
>

>
T
>

--

Bill
KI4HPZ
>

>

>
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = > BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> >
"Jennie" < href=3D"mailto:hnix@adelphia.net">hnix@adelphia.net> wrote in = > message=20 > = > href=3D"news:7eGdnbOfidfv7EHfRVn-ig@adelphia.com">news:7eGdnbOfidfv7EHfRV= > n-ig@adelphia.com...
>
Hooking up a wire antenna to my shack. Using one = > wire with=20 > counterpoise. What length do i need for the wire in the trees = > for=20 > 10-40 meter?
>

>
Thanks
>

>

--

Bill
KI4HPZ
>

>

> > ------=_NextPart_000_248A_01C58BF3.C8CE8A60-- Two things: 1. Turn off HTML posting in your *^@%*^$! LookOut! Express. 2. Try composing your thoughts and questions before you approach usenet. Article: 215336 of rec.radio.amateur.antenna From: Roy Lewallen Subject: Re: Hmmmmmmmmmmmmmm . . . . if a . . . . Date: Tue, 19 Jul 2005 09:39:15 -0700 Message-ID: <11dqb5o9hu6nfbb@corp.supernews.com> References: David J Windisch wrote: > . . . . . "transmission-line" is "improperly terminated" at *both* ends, > that is, "*not* at its surge impedance", then "anything" "sloshing" "to and > fro" inside the "transmission-line" will be affected by whatever > "termination" "anything" "sees". > > Is that a good-enough working hallucination? > > 73, Dave, N3HE Good enough for what? Simplified concepts are sometimes good enough for simplified purposes. But all too often, people try to extend them to phenomena which are beyond the range of the simplified concept's validity. So you end up coming to conclusions which are absurd at best and subtly wrong at worst. (I say absurd at best because hopefully they'll at least be obviously wrong, while the errors in subtly wrong conclusions are not so apparent.) But if I'm properly interpreting your quotation marks as meaning that the enclosed terms are vague or poorly defined or that you don't have a complete grasp of their meaning, your working concept includes at least nine terms which are in this category. As such, I doubt that it's a good working "hallucination" for any use. The language of science and engineering is mathematics. Without the ability to use mathematics to describe physical and electrical phenomena, any "working" explanation will fail at some point. The problem is that it's often not apparent just where this point is. Roy Lewallen, W7EL Article: 215337 of rec.radio.amateur.antenna From: squeege boy Subject: Re: small shortwave antenna Date: Tue, 19 Jul 2005 14:09:18 -0230 Message-ID: References: <4lkod157rpimgd23vspi0jp0sradpce3rs@4ax.com> <42dccf1a$1@news.vo.lu> thanks a million sounds good going to see if I can build that magnetic loop myself, rather than buying something many thanks On Tue, 19 Jul 2005 11:59:45 +0200, "Thierry" <-> wrote: > >"squeege boy" wrote in message >news:4lkod157rpimgd23vspi0jp0sradpce3rs@4ax.com... >> I am livign in an apartment, so I cant transmit (no towers and what >> not) so I am looking for what would suit my needs best for HF and >> shortwave recption in general >> >> I have googled a bit and havent found much in the way of easy to build >> or easy to obtain parts to build antennas >> >> any help would be really appreciated >> cheers > >Hi, > >IMHO there is no miracle to work in such solution. I have the same problem, >having moved in a modern appartment where I am not allowed to erect any >antenna on the roof. So remain the portable solution. > >In your case, for reception, why not to test an active magnetic loop >antenna. They cover all the spectrum in continue >see e.g. http://www.astrosurf.org/lombry/qsl-ala1530.htm > >As you are licensed I think, there are also magnetic loops for TX, see e.g. >www.wimo.de >Only drawback, better to stay over 7m from the antenna due to the magnetic >field generated. If you can do that, it's fine. Its performances are not >better than a dipole but its is somewhat directive. That helps. > >Hope this helps. > >73 >Thierry, ON4SKY >http://www.astrosurf.org/lombry > Article: 215338 of rec.radio.amateur.antenna From: Win Subject: 2Mtr Between HF Antennas Date: Tue, 19 Jul 2005 11:42:50 -0500 Message-ID: Am putting a 10 meter mono on top of a 4 element tri-bander. There will be about 8 ' separation. First, will I have a problem with the 10 meter beam interacting with the 10 meter portion of the tri-bander? Second, what kind of interaction would I have if I put a short two meter beam between the two. I am restricted to one tower, but I hate to give up the performance of the 10 meter mone for the next cycle. Win Article: 215339 of rec.radio.amateur.antenna From: "Bjay" References: Subject: Re: What is the MFJ magic circle ? Message-ID: <0KaDe.2871$yH4.560@newsfe2-win.ntli.net> Date: Tue, 19 Jul 2005 17:27:24 GMT "Bob Miller" wrote in message news:kj0qd1l9p1akhbj5c8vjt6v99am0kloh8t@4ax.com... > On Tue, 19 Jul 2005 00:31:04 GMT, "Bjay" > wrote: > >>I have tried to find detailed information about the MFJ-935 or 936 Loop >>Tuner but so far it has remained a mystery. >> >>No one seems to know what is inside the box, this is surely out of >>character >>with the Ham Radio hobby, unless maybe things have changed so much that we >>now accept any black box without question. >> >>If you have dared to peak inside a magic circle box please tell >> >>Thanks >> >> > > The boxes contain tuners for small loop antennas. Go to the mfj site; > they show an internal picture of the 933 loop tuner. Couple of > variable caps. You might also see if you can download the manuals for > these tuners from the MFJ site -- many are available. > > Or check your ARRL Antenna book for tuning circuits for small loop > antennas. No mystery. > > bob > k5qwg > > > Thanks for your reply Bob but it is the 935 or 936 loop tuner that I am interested in and not the 933. the one that converts a short piece of wire into a small tuned loop. Cheers Article: 215340 of rec.radio.amateur.antenna Subject: Re: small shortwave antenna From: Ed References: <4lkod157rpimgd23vspi0jp0sradpce3rs@4ax.com> <42dccf1a$1@news.vo.lu> Message-ID: Date: Tue, 19 Jul 2005 17:33:20 GMT I am livign in an apartment, so I cant transmit (no towers and what >> not) so I am looking for what would suit my needs best for HF and >> shortwave recption in general >> >> I have googled a bit and havent found much in the way of easy to >> build or easy to obtain parts to build antennas >> >> any help would be really appreciated >> cheers There is no reason anyone living in an apartment can't get on the air, at least to some extent. Have you checked MFJ products for antennas that would suit your needs? http://www.mfjenterprises.com There is the mini whip apartment antenna for 40 - 10M, which will mount right on an outside window sill, MFJ-1622, and there are a number of totally indoor antenna loops you can use, although they are rather pricey, such as MFJ-1788. If you operate QRP at 5 watts, or even up to around 20 watts, none of your neighbors will even know you are on the air. Good luck Ed Article: 215341 of rec.radio.amateur.antenna Subject: Re: What is the MFJ magic circle ? From: Ed References: <0KaDe.2871$yH4.560@newsfe2-win.ntli.net> Message-ID: Date: Tue, 19 Jul 2005 17:47:53 GMT >> > Thanks for your reply Bob but it is the 935 or 936 loop tuner that I > am interested in and not the 933. > the one that converts a short piece of wire into a small tuned loop. > Cheers Didn't you even look? On their website there is a beautiful high resolution picture of the interior of the MFJ-936B tuner. I would hazzard a guess that it is nearly identical to the out-of-production 936. Ed Article: 215342 of rec.radio.amateur.antenna From: "Bjay" References: <0KaDe.2871$yH4.560@newsfe2-win.ntli.net> Subject: Re: What is the MFJ magic circle ? Message-ID: <6fbDe.4452$je1.4274@newsfe7-win.ntli.net> Date: Tue, 19 Jul 2005 18:02:42 GMT "Ed" wrote in message news:Xns96986E456990Dspectrumhogstarbandn@207.106.93.175... >>> >> Thanks for your reply Bob but it is the 935 or 936 loop tuner that I >> am interested in and not the 933. >> the one that converts a short piece of wire into a small tuned loop. >> Cheers > > > Didn't you even look? On their website there is a beautiful high > resolution picture of the interior of the MFJ-936B tuner. I would > hazzard > a guess that it is nearly identical to the out-of-production 936. > > > > Ed Thanks I have just located the page and the pictures are very good. Cheers and thank you all for your help. Article: 215343 of rec.radio.amateur.antenna From: "Henry Kolesnik" Subject: Exotic coax ? Message-ID: Date: Tue, 19 Jul 2005 18:18:18 GMT If you don't suceed try again. Sorry for the repost but my previous post drew nothing useful. Is this site getting like the rest of the Internet? At the OKC hamfest I got a piece of neat looking coax that is double shielded with silver braid, with a sort of clear pink outer sheat. It has connectors so I don't know the thickness of the center conductor but the seller said it was 50 ohm. It's stamped with the following characters: 68999, AA-2831. 81205, 204-15578-1, AUGUST 1996 I asked the seller, an ex-Boeing employee about it and he said it's the same kind as used in Air Force One. He couldn't recall the specs but said it was Teflon, good to a Gig but he had used it outdoors. for 2 meters and 440. Can anyone tell me more or point me to a site? tnx -- 73 Hank WD5JFR Article: 215344 of rec.radio.amateur.antenna From: Jim Kelley Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 11:47:04 -0700 Message-ID: References: <42dc3488$1_2@spool9-west.superfeed.net> <985-42DC7237-196@storefull-3252.bay.webtv.net> <42dcac2a$1_1@spool9-west.superfeed.net> Cecil Moore wrote: > Richard Harrison wrote: > >> Regardless of reflections and re-reflections, all the energy sourced >> into a transmission line ends up in the load if it isn`t lost in >> transmission by radiation or conversion into heat. There`s no place else >> for it to go. > > > Hi Richard, does that statement assume that all energy > dissipated as heat in the source was never sourced? It seems to. Since he wrote "all the energy sourced into a transmission line", it's doubtful that he was implying that any heat energy was sourced into the transmission line. That would be silly (RF transmission line is opaque in the infrared). He probably also assumed that the energy dissipated by the front panel lights wasn't sourced into the transmission line either. You forgot to ask about that. ;-) 73, ac6xg Article: 215345 of rec.radio.amateur.antenna Date: Tue, 19 Jul 2005 14:06:03 -0500 From: Cecil Moore Subject: Re: Can you solve this 2? References: <42dc3488$1_2@spool9-west.superfeed.net> <985-42DC7237-196@storefull-3252.bay.webtv.net> <42dcac2a$1_1@spool9-west.superfeed.net> Message-ID: <42dd5046$1_2@spool9-west.superfeed.net> Jim Kelley wrote: > > Cecil Moore wrote: >> Hi Richard, does that statement assume that all energy >> dissipated as heat in the source was never sourced? > > It seems to. Since he wrote "all the energy sourced > into a transmission line", it's doubtful that he was implying that any > heat energy was sourced into the transmission line. You missed the implication which was: Does any RF energy exit the source only to re-enter the source again later and wind up being dissipated as heat? For instance, we know that a capacitive load is capable of returning energy to the source during part of the cycle. -- 73, Cecil, http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- Article: 215346 of rec.radio.amateur.antenna From: Jim Kelley Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 12:36:23 -0700 Message-ID: References: <42dc3488$1_2@spool9-west.superfeed.net> <985-42DC7237-196@storefull-3252.bay.webtv.net> <42dcac2a$1_1@spool9-west.superfeed.net> <42dd5046$1_2@spool9-west.superfeed.net> Cecil Moore wrote: > Jim Kelley wrote: > >> >> Cecil Moore wrote: >> >>> Hi Richard, does that statement assume that all energy >>> dissipated as heat in the source was never sourced? >> >> >> It seems to. Since he wrote "all the energy sourced >> into a transmission line", it's doubtful that he was implying that any >> heat energy was sourced into the transmission line. > > > You missed the implication which was: Does any RF energy > exit the source only to re-enter the source again later > and wind up being dissipated as heat? That implication did escape notice. Clearly Richard was talking about something else. But it's an interesting question. It would be nice to see some objective data. 73, ac6xg Article: 215347 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 14:39:22 -0500 Message-ID: <1330-42DD56EA-698@storefull-3257.bay.webtv.net> References: <42d48ff5$1_1@spool9-west.superfeed.net> Jim Kelley wrote: "You take too great a liberty with the name Eugene Hecht. Among the things which won`t be found in any of Dr. Hecht`s texts is a minus sign in front of a number expressing an impedance." Don`t know why not. It happens at radio frequencies all the time. Look through Kraus` chapter on "Mutual Impedance of Other Configurations". B. Whitfield Griffith, Jr. gives a practical example starting on page 427 of "Radio-Electronic Transmission Fundamentals". On page 429 he writes: "We immediately notice one disturbing fact: the resistance component of tower 1 has come out to be a negative number. This does not mean the computations are wrong; it simply means that this tower because of the particular phasing and current relationships of this array, will be absorbing more power than it will be radiating itself." This is an old story with broadcast antenna arrays. Best regards, Richard Harrison, KB5WZI Article: 215348 of rec.radio.amateur.antenna From: dplatt@radagast.org (Dave Platt) Subject: Re: Exotic coax ? Date: Tue, 19 Jul 2005 19:47:08 -0000 Message-ID: <11dqm5se9dk6i39@corp.supernews.com> References: In article , Henry Kolesnik wrote: >At the OKC hamfest I got a piece of neat looking coax that is double >shielded with silver braid, with a sort of clear pink outer sheat. It has >connectors so I don't know the thickness of the center conductor but the >seller said it was 50 ohm. >It's stamped with the following characters: >68999, AA-2831. 81205, 204-15578-1, AUGUST 1996 > >I asked the seller, an ex-Boeing employee about it and he said it's the same >kind as used in Air Force One. He couldn't recall the specs but said it was >Teflon, good to a Gig but he had used it outdoors. for 2 meters and 440. > >Can anyone tell me more or point me to a site? Hmmm. I wonder whether this might not be Times Microwave 68999, a mil-spec hermetically sealed .34" coax. Silver-plated copper-clad aluminum center conductor, taped PFTE (Teflon) dielectric, triple shield (silver-plated copper strip, aluminum-backed tape, silver-plated copper braid), FEP (Teflon) inner jacket, Nomex outer jacket. 50 ohms, rated to 18 GHz. Definitely exotic stuff, intended for applications where long-term reliability is extremely important. http://www.timesmicrowave.com/content/pdf/MT340E-B.pdf -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! Article: 215349 of rec.radio.amateur.antenna From: Jim Kelley Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 12:47:57 -0700 Message-ID: References: <42dc3488$1_2@spool9-west.superfeed.net> <985-42DC7237-196@storefull-3252.bay.webtv.net> Richard Harrison wrote: > Jim Kelley wrote: > "In other words a system in which all of the power from the source > reaches the load and none is reflected back to the source without first > reflecting then re-reflecting would violate conservation of energy." > > Conservation of energy means that energy is neither created nor > destroyed, but that heat and other forms of energy are quantitifiable > and convertable in their equivalence. The total amount of mechanical, > thermal, chemical, electrical, and other forms of energy in any isolated > system remains constant. A century ago, Einstein broadened the law to > include equivalence of mass and energy. > > Regardless of reflections and re-reflections, all the energy sourced > into a transmission line ends up in the load if it isn`t lost in > transmission by radiation or conversion into heat. There`s no place else > for it to go. > > Best regards, Richard Harrison, KB5WZI Yes, thanks Richard. It is quite a simple concept. But my contention really isn't about conservation of energy. It's about the 2nd law of thermodynamics. Nature does not require a rolling ball to run through a Rube Goldberg contraption in order to conserve energy. In fact it generally abhors such things. "One should not increase, beyond what is necessary, the number of entities required to explain anything." 73, ac6xg Article: 215350 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 15:57:33 -0500 Message-ID: <20114-42DD693D-928@storefull-3251.bay.webtv.net> References: Cecil Moore, W5DXP is alleged to have written: "Nor will we find a negative scalar quantity accompanied by the claim that the negative sign indicates a change in direction as you have done." Have not read Hscht, but I`ve read Terman and realize that a transmission line can guide a wave only forward and backward. Sometimes backward is considered the negative direction. Terman gives an example on page 90 of his 1955 edition: "When the load end of the line is shorted, that is Eload =0 , reference to Eq. (4-14) shows the reflection coefficient has the value -1.0 on an angle of 0-deg.= 1.0 on an angle of 180-deg. As in the open-circuited case, the reflected wave has an amplitude equal to the amplitude of the incident wave. However, the refleection now takes place with a reversal in phase of the voltage and without change in phase of the current." Best regards, Richard Harrison, KB5WZI Article: 215351 of rec.radio.amateur.antenna From: Jim - NN7K Subject: Re: Air Force One coax ?? References:

<9v3L3ObFBS3CFA+h@ifwtech.co.uk> Message-ID: Date: Tue, 19 Jul 2005 21:36:28 GMT Ian White G/GM3SEK wrote: > LEGAL WARNING: positive gain coax was patented in the late 1980s by the > muTek company in Britain, under the brand name "Gainiax". > > Following established precedent in this newsgroup, unauthorized users of > this patented technology will be pursued with the full vigour of the law. > > muTek advertised this new product in an April RadCom... and received > several serious inquiries. > > Unfortunately the factory did not survive the first production run. The > last words heard over the phone were "You want the ends of these reels > shorted together?" I was wondering why I hadn't heard of any muTEK replacement boards for any of the newer UHF-VHF rigs--- And, now i KNOW WHY! Jim NN7K Article: 215352 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 16:53:49 -0500 Message-ID: <20114-42DD766D-933@storefull-3251.bay.webtv.net> References: Jim Kelley wrote: "It`s about the 2nd law of thermodynamics." Which are: 1. You can`t win. 2. You can`t break even. 3. You can`t get out of the game. Best regards, Richard Harrison, KB5WZI Article: 215353 of rec.radio.amateur.antenna From: Bob Miller Subject: Re: Exotic coax ? Message-ID: References: Date: Tue, 19 Jul 2005 22:17:58 GMT On Tue, 19 Jul 2005 18:18:18 GMT, "Henry Kolesnik" wrote: >If you don't suceed try again. Sorry for the repost but my previous post >drew nothing useful. Is this site getting like the rest of the Internet? > >At the OKC hamfest I got a piece of neat looking coax that is double >shielded with silver braid, with a sort of clear pink outer sheat. It has >connectors so I don't know the thickness of the center conductor but the >seller said it was 50 ohm. >It's stamped with the following characters: >68999, AA-2831. 81205, 204-15578-1, AUGUST 1996 > >I asked the seller, an ex-Boeing employee about it and he said it's the same >kind as used in Air Force One. He couldn't recall the specs but said it was >Teflon, good to a Gig but he had used it outdoors. for 2 meters and 440. > >Can anyone tell me more or point me to a site? >tnx I'd go to the Wireman's web site, and just call them on the phone. They seem to know everything there is to know about coax. bob k5qwg Article: 215354 of rec.radio.amateur.antenna From: Jim Kelley Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 15:35:21 -0700 Message-ID: References: <20114-42DD693D-928@storefull-3251.bay.webtv.net> Richard Harrison wrote: > Cecil Moore, W5DXP is alleged to have written: Jim Kelley actually claims to have written it. > "Nor will we find a negative scalar quantity accompanied by the claim > that the negative sign indicates a change in direction as you have > done." > > Have not read Hscht, but I`ve read Terman and realize that a > transmission line can guide a wave only forward and backward. Sometimes > backward is considered the negative direction. Yes, for vector quantities expressed as a function of position or time. > Terman gives an example on page 90 of his 1955 edition: > "When the load end of the line is shorted, that is Eload =0 , reference > to Eq. (4-14) shows the reflection coefficient has the value -1.0 on an > angle of 0-deg.= 1.0 on an angle of 180-deg. As in the open-circuited > case, the reflected wave has an amplitude equal to the amplitude of the > incident wave. However, the refleection now takes place with a reversal > in phase of the voltage and without change in phase of the current." From Webster's Collegiate: Scalar - a quantity such as mass or time that has a magnitude describable by a real number and no direction Power as a scalar quantity does not have direction, and so one could not for example subtract power 'moving' in one direction from power 'moving' in the other direction by arbitrarily multiplying one of the magnitudes by negative one. 73, ac6xg Article: 215355 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: Air Force One coax ?? Date: Tue, 19 Jul 2005 22:48:01 +0000 (UTC) Message-ID: References: It fits in well with the nonsense issued by the CIA and the USA and UK governments about weapons of mass destruction. Although in this isolated case it appears no lives have been lost in the London Undergroud. ---- Reg. Article: 215356 of rec.radio.amateur.antenna From: "John Smith" References: <7eGdnbOfidfv7EHfRVn-ig@adelphia.com>

Subject: Re: Looking for brains my are small Message-ID: Date: Tue, 19 Jul 2005 16:08:02 -0700 go kiss yourself... if you need your text formatted in some peculiar way--do it yourself or write a plug-in... John "drwxr-xr-x" wrote in message news:slrnddq90p.a4u.bit-bucket@shell.config.com... > On Mon, 18 Jul 2005 23:52:41 -0400, Jennie wrote: >> This is a multi-part message in MIME format. >> >> _------=_NextPart_000_248A_01C58BF3.C8CE8A60 >> Content-Type: text/plain; >> charset="iso-8859-1" >> Content-Transfer-Encoding: quoted-printable >> >> --=20 >> >> "Jennie" wrote in message = >> news:guSdncI2ethh7EHfRVn-rQ@adelphia.com... >> >> --=20 >> >> "Jennie" wrote in message = >> news:7eGdnbOfidfv7EHfRVn-ig@adelphia.com... >> >> --=20 >> >> _------=_NextPart_000_248A_01C58BF3.C8CE8A60 >> Content-Type: text/html; >> charset="iso-8859-1" >> Content-Transfer-Encoding: quoted-printable >> >> >>[HTML>[HEAD> >>> charset=3Diso-8859-1"> >> >> >> >>[BODY bgColor=3D#ffffff> >>

This is basically what i am trying to do for >>10-40 = >> meter at=20 >>

> href=3D"http://www.g3ycc.karoo.net/w3edp.htm">http://www.g3ycc.karoo.net/= >> w3edp.htm

My zm-2 will act as the cap >>circuit....

--

Bill
KI4HPZ

> style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = >> BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> >>
"Jennie" <> href=3D"mailto:hnix@adelphia.net">hnix@adelphia.net>=20 >> wrote in message > = >> href=3D"news:guSdncI2ethh7EHfRVn-rQ@adelphia.com">news:guSdncI2ethh7EHfRV= >> n-rQ@adelphia.com...
>>
I will be using the zm-2 tuner with a = >> ft-817...
>>

>>
T
>>

--

Bill
KI4HPZ
>>

>>

>>
> style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; >> = >> BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> >>
"Jennie" <> href=3D"mailto:hnix@adelphia.net">hnix@adelphia.net> >> wrote in = >> message=20 >> > = >> href=3D"news:7eGdnbOfidfv7EHfRVn-ig@adelphia.com">news:7eGdnbOfidfv7EHfRV= >> n-ig@adelphia.com...
>>
Hooking up a wire antenna to my shack. >> Using one = >> wire with=20 >> counterpoise. What length do i need for the wire in the >> trees = >> for=20 >> 10-40 meter?
>>

>>
Thanks
>>

>>

--

Bill
KI4HPZ
>>

>> >>

>> >> ------=_NextPart_000_248A_01C58BF3.C8CE8A60-- > > > Two things: > > 1. Turn off HTML posting in your *^@%*^$! LookOut! Express. > > 2. Try composing your thoughts and questions before you approach > usenet. Article: 215357 of rec.radio.amateur.antenna From: "Old Ed" References:

Subject: Re: Air Force One coax ?? Message-ID: Date: Tue, 19 Jul 2005 23:11:24 GMT "...no lives have been lost in the London Undergroud (sic)..." ?!? Well Reg, the reality factor of THIS comment is consistent with that of your usual comments relating to terrorism, at least. BTW, how IS life on Uranus? And how do you get that hallucinogenic wine you talk about delivered way out there? "Reg Edwards" wrote in message news:dbjvv1$b9n$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com... > It fits in well with the nonsense issued by the CIA and the USA and UK > governments about weapons of mass destruction. Although in this > isolated case it appears no lives have been lost in the London > Undergroud. > ---- > Reg. > > Article: 215358 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: small shortwave antenna Date: Tue, 19 Jul 2005 23:22:09 +0000 (UTC) Message-ID: References: <4lkod157rpimgd23vspi0jp0sradpce3rs@4ax.com> All you need is a length of plastic-insulated wire strung up in the attic, or unobtrusively tossed out of a window, and a large aligator clip attached to the domestic plunbing system. Plus a simple tuner. Believe me - it really does work very well! Ask any real amateur. And don't get yourself all mixed up about so-called SWR, reflected power and take-off angles. ---- Reg, G4FGQ Article: 215359 of rec.radio.amateur.antenna From: "Fred W4JLE" References:

Subject: Re: Air Force One coax ?? Date: Tue, 19 Jul 2005 20:05:59 -0400 Message-ID: <16d77$42dd9574$97d55ac3$6787@ALLTEL.NET> Stick to antennas Reg. "Reg Edwards" wrote in message news:dbjvv1$b9n$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com... > It fits in well with the nonsense issued by the CIA and the USA and UK > governments about weapons of mass destruction. Although in this > isolated case it appears no lives have been lost in the London > Undergroud. > ---- > Reg. > > Article: 215360 of rec.radio.amateur.antenna From: "Jerry" References: <1121722340.228348.223760@z14g2000cwz.googlegroups.com> Subject: Re: Affordable HF antennas Message-ID: Date: Tue, 19 Jul 2005 21:32:53 -0400 "Rick Scott" wrote in message news:1121722340.228348.223760@z14g2000cwz.googlegroups.com... > Or you could pay 175 for the Original made by the original Designer. > Why should it be 240-350 when 175 will do ? By the same token, why would you buy an Escalade when a Ford will do? The difference is materials and the ability to run power if desired. PVC is not really a good form for loading coils. Phenolic is messy and much more expensive. The original uses #16 wire wound at 10 TPI; I prefer #14 at 8 TPI which is actually more efficient. You can even to to #12 at 6 TPI. Not sure that isn't past any real gains in efficiency, tho. K4KWH > Article: 215361 of rec.radio.amateur.antenna From: Scott Vanzandt Subject: Re: Affordable HF antennas Message-ID: References: <1121722340.228348.223760@z14g2000cwz.googlegroups.com> <12587$42dc4787$97d55ac3$13936@ALLTEL.NET> Date: Wed, 20 Jul 2005 02:45:19 GMT Last I checked, and I'll admit it was a few years ago, the HUMVEE was gov't priced at about $37,000. Not inexpensive, but durable, safer than the Jeep, and with more armor and cargo capacity. Scott N2WMD On Tue, 19 Jul 2005 02:35:46 GMT, Bob Miller wrote: >On Mon, 18 Jul 2005 18:46:15 -0700, Rick Scott >wrote: > >>Fred W4JLE wrote: >>> Given that logic, I assume you drive a model T. >>> >>> "Rick Scott" wrote in message >>> news:1121722340.228348.223760@z14g2000cwz.googlegroups.com... >>> >>>>Or you could pay 175 for the Original made by the original Designer. >>>>Why should it be 240-350 when 175 will do ? >> >>No, But your own argument is that you shouldnt pay 5-700 dollars for >>somthing that yours does the same for 240-350. >> >>So using your argument, why pay 240-350 for somthing that the Original >>does for 175 ???? > >Maybe you should ask Rummy why he's paying $100,000+ for Hummers when >the Original, the Jeep, runs about $16,000. > >bob >k5qwg > Article: 215362 of rec.radio.amateur.antenna Date: Tue, 19 Jul 2005 22:13:53 -0500 From: Cecil Moore Subject: Re: Can you solve this 2? References: <20114-42DD693D-928@storefull-3251.bay.webtv.net> Message-ID: <42ddc27a$1_1@spool9-west.superfeed.net> Richard Harrison wrote: > Cecil Moore, W5DXP is alleged to have written: Actually, it was Jim Kelley who wrote the following. >> "Nor will we find a negative scalar quantity accompanied by the claim >> that the negative sign indicates a change in direction as you have >> done." > > Have not read Hecht, but I`ve read Terman and realize that a > transmission line can guide a wave only forward and backward. Sometimes > backward is considered the negative direction. Yep, that's what I told him. In fact, Ramo & Whinnery illustrate the Poynting vector for forward power as Pz+ and the Poynting vector for reflected power as Pz-. The net power is (Pz+)-(Pz-). -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- Article: 215363 of rec.radio.amateur.antenna Date: Tue, 19 Jul 2005 22:36:29 -0500 From: Cecil Moore Subject: Re: Can you solve this 2? References: <20114-42DD693D-928@storefull-3251.bay.webtv.net> Message-ID: <42ddc7c7$1_2@spool9-west.superfeed.net> Jim Kelley wrote: > Power as a scalar quantity does not have direction, and so one could not > for example subtract power 'moving' in one direction from power 'moving' > in the other direction by arbitrarily multiplying one of the magnitudes > by negative one. For engineers, the direction of the arrow for the Power Flow Vector in joules/sec is generally accepted to be the same as the direction of the joules. From the IEEE Dictionary: "power-flow vector - Vector- characterizing energy propagation caused by a wave and giving magnitude and direction of power per unit-area propagating in the wave." Please note the "*DIRECTION OF POWER* ... *PROPAGATING* in the wave", a direct contradiction to your above assertion. The power measured at the source somehow finds its way to the load in spite of not having any direction (according to you. :-) Most of your rantings and ravings over what I have said are simply semantics and definitions. RF energy and RF power are so closely related that Walter C. Johnson talks about the "principle of conservation of power". -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- Article: 215364 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: Can you solve this 2? Date: Tue, 19 Jul 2005 23:05:57 -0500 Message-ID: <1330-42DDCDA5-778@storefull-3257.bay.webtv.net> References: Jim Kelley wrote: "Power as a scalar quantity does not have direction, and so one could not for example subtract power "moving" in the other direction by arbitrarily multiplying by negative one." Terman did so rather deftly. We make simplifying assumptions and replace the general case with the special case all the time. Bird defines true power delivered by the source to the load as the difference between its forward and reverse power indications. It`s satisfactory in most cases. Inductive and capacitive reactances are routinely added together to give the net reactance and it works fine so long as the reactances are pure. They lie on the same axis but in opposite directions so can be treated as scalars. Another special case. Best regards, Richard Harrison, KB5WZI Article: 215365 of rec.radio.amateur.antenna From: richardharrison@webtv.net (Richard Harrison) Subject: Re: small shortwave antenna Date: Tue, 19 Jul 2005 23:27:30 -0500 Message-ID: <1330-42DDD2B2-782@storefull-3257.bay.webtv.net> References: <42dccf1a$1@news.vo.lu> Thierry, ON4SKY wrote: "As you are licensed I think there are also magnetic loops for TX-." I agree. The advantage of a small loop is that it is inductive, so a series variable capacitor is needed to tune it, in place of the lossy coil needed to tune a small whip. Best regards, Richard Harrison, KB5WZI Article: 215366 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Program METALFLM Date: Wed, 20 Jul 2005 09:00:36 +0000 (UTC) Message-ID: FREQUENCY RESPONSE OF WIRE-END RESISTORS Program has been improved by increasing the number of T and L sections used to simulate more accurately a distributed metal-film resistor and its connecting leads. Plus amended program operating notes. If you are ineterested in the program I suggest you download the updated version and overwrite your existing copy if you have one. Download METALFLM from website below. ---- ........................................................... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp ........................................................... Article: 215367 of rec.radio.amateur.antenna From: "Reg Edwards" Subject: Re: what is best for 10-40m windom or g5rv Date: Wed, 20 Jul 2005 11:42:14 +0000 (UTC) Message-ID: References: