20031114.qrp v03_n104.qrl.20031114 Date: Fri, 14 Nov 2003 19:03:09 EST From: qrp-l@Lehigh.EDU To: "Low Power Amateur Radio Discussion" Subject: QRP-L digest 3104 QRP-L Digest 3104 Topics covered in this issue include: 1) [161193] Re: The 44/88 Foot Dipole expanded for 160 Meters? by "George, W5YR" 2) [161194] re:The 44/88 Foot Dipole expanded for 160 Meters? by Michael Babineau 3) [161195] virus alerts by "n3drk" 4) [161196] [CONTEST] Fall NJQRP Homebrewer Sprint Results by "Ken Newman" 5) [161197] Attic antenna feedlines by Peter Burbank 6) [161198] Re: The 44/88 Foot Dipole expanded for 160 Meters? by Bob Nielsen 7) [161199] 160 meter antenna by Karl Larsen 8) [161200] what is a fox hunt by "n3drk" 9) [161201] Re: virus alerts by "Mike Yetsko" 10) [161202] Re: what is a fox hunt by "Lawrence Makoski" 11) [161203] RE: 160 meter antenna by "Paul Womble" 12) [161204] Thanks for the Altoids info by "Paul Womble" 13) [161205] Re: Attic antenna feedlines by "Mike Gusky" 14) [161206] Re: KX1 Queations by "Rich Johnson" 15) [161207] Re: DSW-2 Power out by "Brian Murrey" 16) [161208] Re: Attic antenna feedlines by "John H. Shannon" 17) [161209] Re: Attic antenna feedlines by "Brian Murrey" 18) [161210] Re: 1000 miles per watt award by "Max Moon" 19) [161211] RE. Attic feedlines by Peter Burbank 20) [161212] Re: Attic antenna feedlines by Dale Botkin 21) [161213] 1000 Mile per watt award by "John H. Shannon" 22) [161214] FOX: KR0U Revised Log by Tim Groat 23) [161215] Results of NOV. " RUN FOR THE BACON" sprint by "Jerry Ford" 24) [161216] RE: Hamradio IP numbers by "John Stevens" 25) [161217] Re: KX1 Queations by Alex 26) [161218] PayPal Notification by "Pat Whelton" 27) [161219] RE: Attic antenna feedlines by "David Hinerman" 28) [161220] Re: PayPal Notification by Dale Botkin 29) [161221] Course study in Space WX by "w8diz" 30) [161222] 1000 Mile per watt award - Addendum by "John H. Shannon" 31) [161223] Re: PayPal Notification by David Ek 32) [161224] Re: PayPal Notification by "Tony Martin W4FOA" 33) [161225] O'scope info by "Rod N0RC" 34) [161226] Re: PayPal Notification by "n3drk" 35) [161227] Re: PayPal Notification by Tom Sevart 36) [161228] Re: PayPal Notification by "John J. McDonough" 37) [161229] swr,watt meter for qrp by "n3drk" 38) [161230] RE: PayPal Notification by "David Hinerman" 39) [161231] re; NOV QST by "Dean-K2WW" 40) [161232] Re: [fpqrp] Course study in Space WX by "Dennis Ponsness" 41) [161233] Re: PayPal Notification by "Joe Martin" 42) [161234] Re: PayPal Notification by "John J. McDonough" 43) [161235] Re: re; NOV QST by Alex 44) [161236] Re: swr,watt meter for qrp by David Toepfer 45) [161237] Re: PayPal Notification by "John H. Shannon" 46) [161238] Re: PayPal Notification by "Mike Yetsko" 47) [161239] Philips LPC2104 ARM MCU by "Leon Heller" 48) [161240] Re: Just a thought on set decorating. by "brian russell" 49) [161241] WTB by Michael Goins 50) [161242] Re: swr,watt meter for qrp by "w8diz" 51) [161243] On the wild porker hunt again by "Jerry Ford" 52) [161244] Toaster Oven by Steven Weber 53) [161245] RE: Philips LPC2104 ARM MCU by "David Hinerman" 54) [161246] Ft. Wayne - Last reminder by "Bill Kelsey - N8ET - Kanga US" 55) [161247] Re: On the wild porker hunt again by "Joe Martin" 56) [161248] Great Alaska Ptarmigan Hunt - This Sunday by Jim Larsen 57) [161249] OHR 500 IF Filter by "Jerry Bartachek" 58) [161250] W8JK files (eznec analysis) now on my yahoo group website es my amp too. by "Earl Andrews" 59) [161251] Re: OHR 500 IF Filter by Chris Cartwright 60) [161252] Re: OHR 500 IF Filter by Ed Lawson 61) [161253] Re: swr,watt meter for qrp by Lee Mairs 62) [161254] Searchable QRP-L archives was Re: O'scope info by George Fremin III 63) [161255] how to add 160 mtrs to G5RV or 88 ft balanced antenna(or dipole) by "Earl Andrews" ---------------------------------------------------------------------- Date: Thu, 13 Nov 2003 18:50:43 -0600 From: "George, W5YR" To: "Mike Duke, K5XU" , "Low Power Amateur Radio Discussion" Subject: [161193] Re: The 44/88 Foot Dipole expanded for 160 Meters? Message-ID: <028301c3aa49$55dbd270$0401a8c0@PS> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Mike, the basic dimension for an Extended Double Zepp is 1.25 wavelengths for the band involved. So, the 88 ft length is for 20 meters, the 176 ft for 40 meters, 352 ft for 80 meters and 704 ft for 160 meters. On the band for which the antenna is designed, the free-space gain over a dipole is about 3 dB. The 88 ft length is convenient since it loads well from 80 through 10 meters. The 176 ft length is an EDZ on 40 meters but will load on 160 meters. On the bands above the design band, the pattern changes from the dipole-like broadside pattern to a multi-lobed pattern. But each major lobe produces more field strength than would the major lobe of a 1/2-wave dipole cut for that band. Center feeding is usually preferred for the EDZ although I suppose it could be end fed. I use two EDZs cut for 20 meters and fed with ladderline. They work very well on 80 - 10 meters. Let me know if I might could add anything . . . 73/72, George Amateur Radio W5YR - the Yellow Rose of Texas Fairview, TX 30 mi NE of Dallas in Collin county EM13QE "Starting the 58th year and it just keeps getting better!" w5yr@att.net ----- Original Message ----- From: "Mike Duke, K5XU" To: "Low Power Amateur Radio Discussion" Sent: Thursday, November 13, 2003 5:43 PM Subject: The 44/88 Foot Dipole expanded for 160 Meters? > Has anyone found the magic length for employing the concept of the 44 and 88 > foot dipole to a length which will work for 160 meters? > > My limited antenna logic tells me that the length would be somewhere around > 176 feet. I know this length works well as an end-fed inverted L. > > But, if it is center fed, on which higher bands will it give a dipole > pattern? > > Mike Duke, K5XU > American Council of Blind Radio Amateurs > ------------------------------ Date: Thu, 13 Nov 2003 19:59:41 -0500 From: Michael Babineau To: qrp-l@Lehigh.EDU Subject: [161194] re:The 44/88 Foot Dipole expanded for 160 Meters? Message-ID: Mime-Version: 1.0 (Apple Message framework v552) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit One option is to use the 88ft flattop and, assuming that you are feeding it with parallel transmission line, tie both sides of the feeder together and work it against a counterpoise wire. Michael VE3WMB ------------------------------ Date: Thu, 13 Nov 2003 20:16:06 -0500 From: "n3drk" To: "Low Power Amateur Radio Discussion" Subject: [161195] virus alerts Message-ID: <02c101c3aa4c$e2e8cd50$6400a8c0@n3drk> MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit I dont know if anyone else is getting them but for 3 weeks not one disguised virus from microsoft upgrade email. The past 4 days I have received 87 of these. They are the w32.swen.a@mm Anyone having similar results? john ------------------------------ Date: Thu, 13 Nov 2003 20:36:55 -0500 From: "Ken Newman" To: "List QRP-Canada" , "K8NI Norm Into" , Subject: [161196] [CONTEST] Fall NJQRP Homebrewer Sprint Results Message-ID: <00d601c3aa4f$cd5628e0$38eb80d1@kensdell> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi All, Here is the results for the 2003 Fall NJQRP Homebrewer Sprint. Awards and prizes will come later. I hope all enjoyed the sprint! 72 de Ken N2CQ@ARRL.NET 2003 Fall NJQRP Homebrewer Sprint Results Call Mode QSOs Points X SPCs X PWR = Score ------------------------------------------------------- N9NE CW 97 388 54 7 146,664 K5ZTY CW 79 316 55 7 121,660 W5TA CW 63 200 41 7 57,400 W0UFO CW 56 224 35 7 54,880 W0NTA CW 51 204 33 7 47,124 VE3XT CW 44 172 27 7 32,508 W2JLK CW 35 140 23 10 32,200 W5KDJ CW 25 100 21 15 31,500 K3ESE CW 36 144 26 7 26,208 N0TK CW 31 124 23 7 19,964 K8DDB CW 31 124 22 7 19,096 KW4JS CW 34 132 20 7 18,480 K4UK CW 32 128 20 7 17,920 K0FRP/4 CW 33 132 18 7 16,632 W2JEK CW 22 88 20 7 12,320 WA1ZCB CW 22 88 18 7 11,088 W3DP CW 22 88 15 7 9,240 K1KID CW 20 80 16 7 8,960 W1PID CW 22 88 14 7 8,624 KE2WB CW 13 52 10 7 3,640 N2CX CW 9 36 8 7 2,016 AE4EC CW 7 28 6 7 1,176 K2EKM CW 3 12 3 10 360 N8VW CW 3 12 3 7 252 WB7AEI CW 3 12 3 7 252 Checklogs: WQ2RP CW 34 136 24 7 22,848 (NJQRP Club Station, N2CQ Opr) -----------------------OPERATOR COMMENTS--------------- N9NE: Rig: K2 #1429 @ 5W. Antennas: Triband beam and 88 ft. doublet at 60 feet. Thanks to the NJQRP Club for making the fun possible! Eighty meters was productive here in WI: wish that more ops had been able to get on that band. de Todd, Oshkosh, WI --------- K5ZTY: Elecraft K2, Force 12 C4S. My first QRP contest in a while and it went strictly according to Murphy's Law. Didn't do the last hour. Seemed to be good participation and some pretty good condtions for a change. Had fun while things were working here though. Thanks to Ken and the rest of the NJ bunch for putting this one on again. de Bill, Houston, TX --------- W5TA: 20 meters: NORCAL "Red Hot" transceiver (kit, X4), 5 Watts. Antenna:5/8 wave ground mounted vertical. 40 meters: Kenwood TS-430S (commercial, X2) Power: 5 watts monitored with Welz SWR/Power meter Antenna: 1/4 wave ground mounted vertical Did better than last year's fall sprint, but not as good as spring sprint. Was a lot of fun anyway. Very 72, de Dick, Round Rock, TX ---------- W0UFO: Elecraft K-1 5W. 20m dipole, 40m zepp fed 160' wire. Conditions were good and enjoyed working so many of the regular qrp ops. de Mert, Cabin in Pine County, MN ----------- W0NTA: Operated a K2 at 5 watts output to a temporary short G5RV antenna up 20 feet in my backyard. I have antenna restrictions here so I put up this antenna for the contest. It worked very well on 20 meters but not so hot on 40. Many very strong signals here tonight on both bands. Another fun sprint. Thanks to the New Jersey club for organizing it. de Dick, Greeley, CO --------- VE3XT: Elecraft K1 to homebrew all band vertical with 8 AA NiMH battery pack. Good condions and good operators made for a good score. de Bill, Thunder Bay, ONT --------- W2JLK: Small Wonder modified 1W. 40m Dipole up 15m. Hamming since '59 - Homebrewing entire time! de Jim, Matawan, NJ --------- W5KDJ: Good contest as long as you operated 20. 40 next to impossible, nil sigs on 80. Met lot of the regulars and few new folks. Good contest and looking forward to the next one. K1-4 Yagi on 20, LW on 40. de Wayne, Spring, TX --------- K3ESE: Setup was a K1 at 5W into a longwire. I missed the first half hour, while reading "The Long Winter" to my little girls. I also missed the last half hour, as I was falling asleep, and there were no ops out there left unworked, it seemed. But while I was there, it was a load of fun! Thanks to NJQRP once again! 73, 72 es oo, Lloyd, Reisterstown, Maryland ---------- N0TK: K-1 #545 on 20 & 40 m attic dipoles. de Dan, Highlands Ranch, CO ---------- K8DDB: Sierra 5W, G5RV @ 37 feet and LDG Electronics Z11 Auto Tuner, N3FJP's contest software and Dell Latitude laptop computer. Band conditions weren't too good. 20 meters dried up early, 40 and 80 meters were noisey, but so what, I had a good time! Thanks to the sponsors and all of the QRP gang!! de MiKe, Vulcan, MI ---------- KW4JS: Elecraft K2, 5W. de John, KINGSTON, TN ----------- K4UK: Elecraft K2. Was able to get in for just a little time due to other Commitments. de Stan, Moneta, VA ---------- K0FRP/4: K1 40M ONLY VERTICAL DIPOLE IN THE PINE TREES de Al, Aiken, SC ----------- W2JEK: OHR-100A 20m, OHR40 40m & TenTec 1380 80m. Thanks for a nice contest! de Don, River Edge, NJ ----------- WA1ZCB: Elecraft K-1 4W. 300' wire loop in 50' tree. My first QRP contest was not what I expected. I had a lot of contacts(22) and 18 new states to add to my W.A.S. award, and all on 40 meters. Had a great time in the sprint. Look for me in the next HB sprint. de Ed, Fall River, MA ----------- W3DP: Elecraft K-1 5W #238, G5RV up 25' de Dick, Camp Hill, PA -----------9 K1KID: Elecraft K2 @ 5 W, Antenna = Carolina Windom @ 35 ft. What a blast. 20 Meters closed down shortly after the start of the Sprint. 40 was up and down all evening but was in there long enough to make contacts. 80 meters was in terrible shape but managed to snag N9NE, the only station heard there. Conditions were not the best but the experience under poor conditions is invaluable. Love the Sprints, They are long enough so that you can polish your skills without the marathon effort required for a contest weekend! I hope every one had as much fun as I did. See you all in the next Sprint! 72 de Carl, MA ----------- W1PID: Rigs DSW 40 and DSW 20 Antenna Windom OCF dipole Many thanks for a fun event, best, Jim, NH ------------ KE2WB: de John, Atlanta, GA ----------- N2CX: Sierra 5w. de Joe, Bellmawr, NJ ----------- AE4EC: Elecraft K2,560 ft horizontal loop, gell cell power Lots of local noise here making it difficult at time to pull stations out of noise. Too bad I had to get up early next morning for work or could have stayed on the air longer. Sometimes wish test would start earlier in evening. de Ed - Carrboro, NC ----------- K2EKM: HOMEBREW XCR (ROCKMITE), 250MW-1W de Bill, Springfield, VA ----------- N8VW: Elecraft K2 5W. de Pat, OH ----------- WB7AEI: Station: Homebrew superhet rcvr (BP fltr, NE602, xtal fltr, NE602, NE5532 audio filter & amp), Homebrew TX 1 watt VFO exciter with 5W IRF511 MOSFET amp, homebrew SWR meter and tuner, homebrew keyer (K1EL with skin resistance paddle), 40M full wave stealth loop with 2 sides at 6 feet and high point 17 feet. At least conditions were better than for QRP Afield (?). Signals here were at the "hold your breath while you copy" level. Anyone who worked several hours of this deserves a special award for perseverance under awful conditions! The guys above have real good ears! Thanks for the fun, 72's Phil WB7AEI, Kent, WA ------------- WQ2RP: Thanks to all for your interest and activity in the sprint. RIGs: Elecraft K1 4w, 8 AA batteries, Portable zepp. Good band conditions in general. It was great to QSO the "Ususual Suspects" and several with milliwatt power. Look for the Spring QHB Sprint on Mar 22, 2004, 0000z. CU THERE! 72 de Ken N2CQ Opr - Woodbury, NJ ------------------------------ Ken Newman Woodbury, NJ N2CQ@ARRL.NET ------------------------------ Date: Thu, 13 Nov 2003 20:39:16 -0500 From: Peter Burbank To: qrp-l@lehigh.edu Subject: [161197] Attic antenna feedlines Message-ID: <5.2.0.9.0.20031113203551.00a1ca70@mail.qx.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed I am looking for ideas about how some folks run feedlines up to the attic. TIA and 73 Pete NV4V ------------------------------ Date: Thu, 13 Nov 2003 17:47:03 -0800 From: Bob Nielsen To: Low Power Amateur Radio Discussion Subject: [161198] Re: The 44/88 Foot Dipole expanded for 160 Meters? Message-ID: <20031114014702.GB31944@n7xy.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Nov 13, 2003 at 05:43:04PM -0600, Mike Duke, K5XU wrote: > Has anyone found the magic length for employing the concept of the 44 and 88 > foot dipole to a length which will work for 160 meters? > > My limited antenna logic tells me that the length would be somewhere around > 176 feet. I know this length works well as an end-fed inverted L. > > But, if it is center fed, on which higher bands will it give a dipole > pattern? Mike, That concept is described in W4RNL's paper "Suppose I could only have one wire antenna...." , which describes using the 44 foot dipole between 40 and 10 meters. At this length, there will be a slight loss of gain on 40 compared to a half-wave (67 ft) antenna, but the dipole pattern holds up as high as 10 meters. Likewise the 88 foot dipole gives similar results between 80 and 20 meters. A 167 foot dipole should work similarly over the 160 to 40 meter range. Deviation from a dipole pattern (main peak at 90 degrees to the wire) starts when the dipole length is greater than approximately 1.25 wavelength. I had a thought that a 122 ft wire should perform well up to 30 meters and might be usable on 160, but the feed point impedance and pattern gain would be lower than with a 167 ft. wire. Because the feed point impedance varies quite a bit over the usable frequency range of the antenna, these should be fed with open wire or ladder-line and ideally they should be at least a half-wavelength above ground at the lowest frequency (not easy on 160, but if I had some really tall trees....) 73, Bob N7XY ------------------------------ Date: Thu, 13 Nov 2003 18:59:47 -0700 (MST) From: Karl Larsen To: qrp-l@lehigh.edu Subject: [161199] 160 meter antenna Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII The only antenna to use on 160 meters is a 1/4 wave vertical. This can be a 130 foot tower provided it's made of aluminum to cut down I squared R loss. The ground plane needs to be about a mile of number 8 copper wire. Bury the copper wire so you don't trip on it. With your MFJ antenna analyser you will find the feed point impedance is about 36 +j0 most anyplace in the band. With this antenna you will work the world. -- - Karl Larsen k5di Las Cruces,NM Az ScQRPions - ------------------------------ Date: Thu, 13 Nov 2003 21:07:39 -0500 From: "n3drk" To: "Low Power Amateur Radio Discussion" Subject: [161200] what is a fox hunt Message-ID: <02df01c3aa54$1646a850$6400a8c0@n3drk> MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit I have no idea what this is. How is it run? Someone explain for me please. Thanks john ------------------------------ Date: Thu, 13 Nov 2003 21:09:41 -0500 From: "Mike Yetsko" To: , "Low Power Amateur Radio Discussion" Subject: [161201] Re: virus alerts Message-ID: <005f01c3aa54$62d050e0$0200a8c0@charter.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit > I dont know if anyone else is getting them but for 3 weeks not one disguised > virus from microsoft upgrade email. The past 4 days I have received 87 of > these. They are the w32.swen.a@mm > Anyone having similar results? > john Not surprising. People get lax, and the bomb goes off. Then people pay attention. For a while. Then they get lax. And someone gets infected. And it spreads for a while, and we all get bombarded. Then people will pay attention, and it will die down for a while. What's the big deal? Other than that we should be hanging the people that write this stuff. ------------------------------ Date: Thu, 13 Nov 2003 21:33:11 -0500 From: "Lawrence Makoski" To: , "Low Power Amateur Radio Discussion" Subject: [161202] Re: what is a fox hunt Message-ID: <002b01c3aa57$a64cbef0$47b4590c@larrysahyqy001> MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit John, It's all explained here: http://www.cqc.org/fox/winter_fox_03-04/rules.htm 73 de Larry W2LJ - Vivat Morse! W2LJ@arrl.net http://www.qsl.net/w2lj ARRL Lifemember QRP ARCI #4488 NJQRP #47 FISTS #1469 QRP-L #778 FP #612 QRPp-I #759 ARS #1528 --- K1 #1647 --- AmQRP, CQC #746 ------------------------------ Date: Thu, 13 Nov 2003 21:34:34 -0500 From: "Paul Womble" To: "'Low Power Amateur Radio Discussion'" Subject: [161203] RE: 160 meter antenna Message-ID: <006f01c3aa57$d7a1fce0$6401a8c0@house> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I used a center fed antenna on 160 with a lot of success. It was 125' on each side fed with 450 ohm ladder line. It was up about 40' at the center up in a big oak tree in the yard. One end had to be curved around trees to keep it on our lot. That end was in somewhat of a sideways L shape. The ladder line went directly into the shack to a MFJ tuner. With 100 watts I worked anything I could hear. Europe, Africa, North American & South America were no problem. I worked a few VK's/ZL's but it took more work. I did hear a few Asian stations at my sunrise but never was able to work them. That antenna also kicked butt on 20m and 40m. No scientific data to back it up...just the logbook. Proof enough for me. 73 Paul K4FB > -----Original Message----- > From: owner-qrp-l@Lehigh.EDU [mailto:owner-qrp-l@Lehigh.EDU] > On Behalf Of Karl Larsen > Sent: Thursday, November 13, 2003 9:00 PM > To: Low Power Amateur Radio Discussion > Subject: 160 meter antenna > > > > The only antenna to use on 160 meters is a 1/4 wave vertical. ------------------------------ Date: Thu, 13 Nov 2003 21:36:07 -0500 From: "Paul Womble" To: "'Low Power Amateur Radio Discussion'" Cc: Subject: [161204] Thanks for the Altoids info Message-ID: <007001c3aa58$0eadeff0$6401a8c0@house> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I had a lot of people reply to my request for Altoids tin info. Several offered to send tins and I have some on the way. I want to thank everyone that replied. 73 Paul K4FB ------------------------------ Date: Thu, 13 Nov 2003 20:58:36 -0600 From: "Mike Gusky" To: "Low Power Amateur Radio Discussion" Subject: [161205] Re: Attic antenna feedlines Message-ID: <008a01c3aa5b$3366b220$c602a8c0@D8819N31> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I use a short piece (20 feet) of RG8x from the shack to a 4-to-1 balun in the attic, where my 80 foot dipole is connected to the balun with 300 ohm Radio Shack twin lead. Seems to work well for an indoor antenna. Using a TenTec Argonaut 516 with a Z-11 tuner. 73 Mike K5UX ----- Original Message ----- From: "Peter Burbank" To: "Low Power Amateur Radio Discussion" Sent: Thursday, November 13, 2003 7:39 PM Subject: Attic antenna feedlines > I am looking for ideas about how some folks run feedlines up to the attic. > TIA and 73 > Pete NV4V > > > ------------------------------ Date: Thu, 13 Nov 2003 19:05:11 -0800 From: "Rich Johnson" To: , "Low Power Amateur Radio Discussion" Subject: [161206] Re: KX1 Queations Message-ID: <001201c3aa5c$1e2aa410$f877d30c@END0EB86CD98A1> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Wayne: These are great answers and just what I wanted. That is the insight into design trade off decisions. Thank you very much and do you mind if I contact you directly if I have more of these design questions/ Again, thank you for the insight. cheers, rich ----- Original Message ----- From: "Wayne Burdick" To: "Low Power Amateur Radio Discussion" Sent: Thursday, November 13, 2003 11:33 AM Subject: Re: KX1 Queations > Hi Rich, > > Great questions! Here are the answers: > > > 1) Why the use of 2N4124 NPN transistors instead of2N3904s? > > The issue is Q7. I tested the 2N4124 against many other NPN transistors many > years ago when I first used an NPN clamp as a T-R element in a series-tuned L-C > circuit. The 2N4124 has the advantage of very low capacitance when biased > off--something in the 1 to 2 pF range--so it won't cause any loss of circuit Q > in receive mode. When biased on (TX), the transistor limits positive signal > excursions due because of the saturation voltage (Vce), and negative excursions > via Vbe breakdown (about -4 to -5V). This method has been tested extensively in > several of my previous designs, including the NorCal 40A and Sierra. > > We used a 2N3904 at Q5 (driver) since it out-forms a 2N4124 at the this level of > Vce current. The other NPN transistors used could be of either type. > > > > 2) What is the advantage of using J309 over the ever popular J310? > > The J309 has a much lower pinch-off voltage (typically -1 to -3 V), making it > more suitable at low voltages. I've also used J310s in this mute circuit, but in > the case of the KX1 I wanted the muting to continue to work even if the supply > voltage on the product detector dropped into the 5 volt range. A J310 is only > guaranteed to fully cut off with Vgs of 6 V, though in practice they're usually > closer to 3 or 4 V. > > > > 3) Why not use a double tuned filter in the front of the first mixer > > instead of a single tuned circuit? > > It is a double-tuned filter. The first tuned circuit is in series, formed by CA > and L6, with additional capacitance placed in parallel with CA on 30 and 40 > meters. The second tuned circuit is formed by L7 and its nearby capacitors. A > series/parallel double-tuned circuit can perform just as well as a more > conventional top-coupled dual-parallel type, but has the advantage of providing > a place to attenuate the signal on transmit, in this case via Q7, the 2N4124 I > mentioned above. > > > > 4) Why does the K1 drives it's control relays directly from the PIC but the > > KX1 goes from the PIC thru a TC4427? > > To reliably drive a latching relay directly from a PIC, you need to have one end > of the relay terminated in a very low impedance--much lower than one of the > PIC's outputs can provide. In the case of the K1 and K2, we achieve this by > using many relays in parallel, each connected to an "RY_COM" (common) line. To > turn one of them on or off, all of the PIC drive outputs for the others are > thrown in the opposite direction. The relays then appear to be a small resistor > connected to a supply rail, providing the low Z needed. The PIC can then turn on > or off the selected relay without difficulty. > > In the case of the KX1, there are only two relays--not enough to provide a > parelleled-coil low-resistance path. The TC4427 is a dual driver with much lower > output Z than a PIC output, so it buffers the PICs relay on/off drive lines. > > But that's not the only reason for the TC4427. Since the two relays are in > parallel (always switched on/off together), I was able to use one of the 4427's > two outputs as a "6T" (6 volts on TX) line. This is what turns the driver and > pre-driver stages on and off during transmit, and the very low output Z of the > 4427 can directly drive a large electrolytic capacitor (C35) to provide CW > envelope shaping. R26 and C35 set the time constant of this waveform. Further, > the 4427 can drive just as hard to both the supply and ground rails, so the > waveform is highly symmetrical. This pre-driver/driver state has the advantage > of working very well at low voltages, unlike an LT1252 video driver (which I > used in the SST and K1 designs), which requires 8 volts to provide adequate > output drive, and which may produce a less-symmetrical keying waveform if its > supply voltage is keyed. > > > > 5) What is the advantage of muting both sides of the audio to the LM386? > > This is not quite the right question. The question is, why use balanced feed > from the product detector to the AF amp? The reason is that this reduces > common-mode noise pickup and suppresses some keying artifacts, *and* gives you > an increase in overall audio gain since both the NE602 and LM386 can be operated differentially. > > Once you're committed to a balanced audio path, you need to mute the signal in > both legs. > > > > 6) Is there a graph of rms audio output voltage to agc voltage to gain of > > the NE602? > > Not that I'm aware of. As far as I know I was the first to apply AGC to an > NE602/612 (in the SST, then in the K1 and now the KX1). Dave Fifield borrowed > the idea for his NC20 design. In general, the gain of Gilbert-cell multipler can > be reduced in this fashion as long as a degradation of IMD is tolerable. > Applying the smallest possible amount of bias reduction is a good strategy, and > it's important to maintain DC balance by using an RF choke (or transformer) at > pins 1 and 2. There's some protection from harmonic distortion due to the > preceding crystal filter, and in my tests, I noticed very little distortion in > the audio channel even in the presence of near cut-off bias. > > In the case of the NE602, an AGC range of something like 70 or 80 dB is > possible, depending on individual device balance and the input frequency. In the > K1 we applied "delayed" AGC to the RX mixer as well, resulting in a huge AGC > range. You could do that in the KX1, too, by adding a resistor and an RF c hoke, > but that's probably overkill since the KX1 has an analog RF GAIN control for the > rare times when you might encounter such large signals. > > > > 7) Why use LEDs for the display when a LCD display would consume less > > power? > > We pondered this question, and the answer was a little surprising. > > First, this is an incredibly efficient LED display. It has a very narrow optical > bandwidth, and is specifically designed for very-low-current applications. > Thanks to multiplexing, the average per-segment current required in moderate > lighting is only about 100 microamps! This means that a typical *total* current > requirement for the display--12 segments lit--is only a little over 1 mA. Even > at the brightest setting (LED=6), which is readable in outdoor daylight > conditions, the entire display draws a little over 10 mA average. But in > practice, settings of LED=0 to 3 are used, resulting in 1 to 3 mA of current. > > It turns out that a lot of backpacking and other field use of these little rigs > occurs indoors, inside tents, in the late afternoon, or in the evening, so these > settings are used more often than not. > > The other advantages of the LED are that it's rugged, small, and can be driven > directly from a 28-pin PIC with no added driver. If we had used and LCD, we > would have had to use either a 40-pin PIC or a dedicated driver IC. We would > also have had to include a backlight, which would have required as much or more > current than the LED display. > > Finally, to make sure that the LED current would not be an issue even in bright > sunlight, we added two more features to the KX1: a display-off timer (5 to 60 > seconds, or infinite), and 100% audio Morse feedback. You can use the KX1 > completely without the display, including the menus, all switch functions, and > two VFO frequency modes. > > Any other questions? :) > > 73, > Wayne > N6KR > > -- > > http://www.elecraft.com > ------------------------------ Date: Thu, 13 Nov 2003 22:17:09 -0500 From: "Brian Murrey" To: , "Low Power Amateur Radio Discussion" Subject: [161207] Re: DSW-2 Power out Message-ID: <010b01c3aa5d$cb06b240$02fea8c0@bjmw2k> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I am getting about 3.4w with mine as measured on the NoGa/Flying Pigs Wattmeter I built at FDIM 2002...but my power supply is only feeding about 12.8 volts. What are you using for a power source? I get about 3w with a 12v SLA battery ----- Original Message ----- From: "Lee Hopper" To: "Low Power Amateur Radio Discussion" Sent: Thursday, November 13, 2003 1:42 PM Subject: DSW-2 Power out > Hi, guys - > > My recently built DSW-2 works fine, but only gets about 3W out by my WM-2 > qrp wattmeter. > > Dave says you should get "about 4W" out. > > Do you think 3W output is reasonable? > > 73 - > > Lee Hopper, NB7F > > ------------------------------ Date: Thu, 13 Nov 2003 22:14:54 -0500 From: "John H. Shannon" To: Subject: [161208] Re: Attic antenna feedlines Message-ID: <000701c3aa5d$7fd43540$37b766a6@alltel.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit The feedline system for my attic antennas are described fully on my website. Go to my Homebrewing Section - Antennas page. Hope that helps those of you interested in the topic. At least it should give you some ideas to play with. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 - John, K3WWP - 100% CW & QRP using simple wire antennas. http://home.alltel.net/johnshan/ My website is now in its eighth year of operation and includes the following: DX QSL Routes ** Operating Tips QRP Rigs Info ** CW Contest Calendar Daily Propagation Info ** Your CW Stories Teens and CW ** Monthly polls Categorized Quality Links ** MUCH MORE If you love Morse Code, please join the FISTS club - http://www.fists.org I'm proud to be FISTS # 2002 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ----- Original Message ----- From: "Peter Burbank" To: "Low Power Amateur Radio Discussion" Sent: Thursday, November 13, 2003 8:39 PM Subject: Attic antenna feedlines > I am looking for ideas about how some folks run feedlines up to the attic. > TIA and 73 > Pete NV4V > > ------------------------------ Date: Thu, 13 Nov 2003 22:22:15 -0500 From: "Brian Murrey" To: , "Low Power Amateur Radio Discussion" Subject: [161209] Re: Attic antenna feedlines Message-ID: <013d01c3aa5e$81492c90$02fea8c0@bjmw2k> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I have a 1/2 wave 40m dipole in my attic, it is center fed with RG8X coax. I punched a hole (a very SMALL hole) in the ceiling above my operating position and just dropped the cable down to my desk. Attached a BNC and connected it to my K1 and I am off to the races. I COULD put one of those fancy cable faceplates up but why? 73 de KB9BVN ----- Original Message ----- From: "Peter Burbank" To: "Low Power Amateur Radio Discussion" Sent: Thursday, November 13, 2003 8:39 PM Subject: Attic antenna feedlines > I am looking for ideas about how some folks run feedlines up to the attic. > TIA and 73 > Pete NV4V > > > > ------------------------------ Date: Thu, 13 Nov 2003 22:19:41 -0600 From: "Max Moon" To: "QRP-L List" Subject: [161210] Re: 1000 miles per watt award Message-ID: <002f01c3aa66$8750a020$9739fea9@computer> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Rob, I assume you've already gotten your question answered but just in case, it's straight arithmetic: miles/power in watts must equal or exceed 1,000. The Flying Pigs site has a link http://fpqrp.com/distance.html to the "How Far Is It?" calculator at a SE Asian airline website--which is down at this particular moment. I did a google & all the links I checked actually were just linked to http://www.indo.com/distance/ except for things like mapquest.com which calculate driving distance (almost certainly a "N/A" in your case ;-) When I got the award through QRP-ARCI, with everything else I had to submit the longitude/latitude of both hams. I don't know if they actually used that to check my distance figure (from indo.com). Congrats on the award! 72s, --Max, k0max ------------------------------ Date: Thu, 13 Nov 2003 23:20:42 -0500 From: Peter Burbank To: qrp-l@lehigh.edu Subject: [161211] RE. Attic feedlines Message-ID: <5.2.0.9.0.20031113231621.00a24ea0@mail.qx.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Thanks for all the great ideas gang. I enjoyed them all and will settle on one soon. Vy 73 to all Pete NV4V ------------------------------ Date: Thu, 13 Nov 2003 22:30:08 -0600 (CST) From: Dale Botkin To: Peter Burbank Cc: Low Power Amateur Radio Discussion Subject: [161212] Re: Attic antenna feedlines Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Thu, 13 Nov 2003, Peter Burbank wrote: > I am looking for ideas about how some folks run feedlines up to the > attic. I went out and bought a 5/8" flex drill used for cable runs. It's a 5' flexible shaft with the bit on the end. I have sort of a tunnel that runs from the basement to the attic, through which the HVAC duct and the stack for the water heater and furnace pass. There's enough space in there to run my feed line without contacting the sheet metal. Had to cut a hole in an upstairs closet to punch through the floor, so I cut a hole with a stud in the center. Drilled the floor hole, then found an oak drawer front at Lowe's, stained it, and used a flat-head brass screw and brass cup washer through the center to attach it to the stud. Now there's a nice looking panel over the hole so even the XYL can't complain, and I can get in there if I need to. I used Radio Shack 300 Ohm TV twinlead. Gave it a dozen twists so that if it was close to metal on one side, maybe the twists would keep things more or less balanced. I'm sure it's not perfect, but it does work. Hope this helps. 72, Dale - N0XAS -- It's a thankless job, but I've got a lot of Karma to burn off. PicoKeyer Analog with pot speed control now available! Or add memory and more to your Rock-Mite -- http://www.hamgadgets.com ------------------------------ Date: Fri, 14 Nov 2003 00:01:24 -0500 From: "John H. Shannon" To: Subject: [161213] 1000 Mile per watt award Message-ID: <004901c3aa6c$5b0d6420$37b766a6@alltel.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I recently added a link to a distance and bearing calculator on my website. Go to my Links section - Miscellaneous page and look for Distance and Bearing Calculator. Find the Lat. and Lon. of the station you worked. You can get the station's Lat. and Lon. from Buckmaster, QRZ, or many other callsign servers (again see my site for the Find a QSL Route page in my DX or QSLing sections). Enter your Lat. and Lon. as site 1 and the other station's Lat. and Lon. as site 2 in the format shown in the example and press the 'calculate distance' button. The answer will appear in a little pop up message. You can also calculate the bearing further down the page if you wish. The site also explains a bit of the math behind the formulas if you're interested. This site gives the distance in kilometers so you'll have to multiply that answer by 0.6214 to get the answer in miles. Hope that helps. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 - John, K3WWP - 100% CW & QRP using simple wire antennas. http://home.alltel.net/johnshan/ My website is now in its eighth year of operation and includes the following: DX QSL Routes ** Operating Tips QRP Rigs Info ** CW Contest Calendar Daily Propagation Info ** Your CW Stories Teens and CW ** Monthly polls Categorized Quality Links ** MUCH MORE If you love Morse Code, please join the FISTS club - http://www.fists.org I'm proud to be FISTS # 2002 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ------------------------------ Date: Thu, 13 Nov 2003 22:10:07 -0700 From: Tim Groat To: qrp-l@lehigh.edu Subject: [161214] FOX: KR0U Revised Log Message-ID: <5.1.1.6.2.20031113220237.00a157f0@mail.earthlink.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed My updated log follows. If you have any late changes, speak up now! Thanks to everybody for persevering through the horrid A-Index. This has been a rough early fox season. Hopefully things will improve as the sun turns another side towards us. 72, --Tim (KR0U) KR0U Fox Log 12-Nov-2003 ------------------------------------------ UTC CALL RCVD QTH NAME PWR ------------------------------------------ 0208 W0NTA 559 CO DICK 5W 0209 K3PH 559 PA BOB 5W 0210 W5TB 559 TX DOC 5W 0211 KK5LD 559 TX DAN 5W 0213 K8KFJ 579 WV GARY 5W 0214 N1TP 559 FL TOM 5W 0216 W5YR 559 TX GEORGE 5W 0217 N4DD 559 TN DENNIS 5W 0218 K6VNX 559 CA ARLEN 5W 0219 K5DW 559 TX DON 5W 0219 N5ZE 559 TX LEW 5W 0220 N4ROA 559 VA DAN 5W 0221 N3BJ 559 VA ALAN 5W 0223 N4IM 559 TX COLE 5W 0225 K4GT 559 GA JIM 5W 0225 K5BGB 579 TX ROD 5W 0227 K5PSH 559 TX JERRY 5W 0228 K0EVZ 589 NM DOC 5W 0228 K5ZTY 559 TX BILL 5W 0230 K5EOA 559 LA WAYNE 5W 0231 N5IB 559 LA JIM 5W 0231 N5YFC 559 LA WAYNE 5W 0233 KD5UDB 559 LA CHRIS 5W 0234 K5DI 339 NM KARL 5W 0236 N1FN 559 CO ET 5W 0238 KG6WP 559 CA WARD 5W 0240 W5KDJ 559 TX WAYNE 400MW 0241 AF4LQ 559 KY MIKE 5W 0242 AG4PJ 559 AL DAVE 5W 0245 AC7A 339 AZ TOM 5W 0247 KB9YIG 559 IN TONY 2W 0250 KG0PP 559 CO JIM 5W 0252 AJ4AY 559 AL JAY 5W 0254 WA7LNW 579 UT JACK 5W 0255 AB9CA 559 AL DAVE 5W 0257 W7ILW 559 AZ WALT 5W 0305 W2XN 559 FL FRED 5W 0306 N9AW 339 WI JERRY 5W 0309 NK9G 559 WI RICK 5W 0310 WA9TZE 559 WI JIM 5W 0311 NV4V 559 KY PETE 5W 0312 K4CMC 559 FL BRUCE 5W 0314 W9XU 559 WI LON 5W 0319 AA5O 579 LA VERN 5W 0327 K6XR 579 CA REGGIE 5W 0328 W4NJK 559 CA CHARLIE 5W 0330 KG7TS 559 NV BOB 5W 0333 N0IT 559 MO DAVE 5W 0335 AA7EQ 559 AZ BOB 5W 0339 KI0RB 559 CO VINCE 5W 0342 AK7Y 559 AZ GREG 5W 0344 N0EA 449 MO WAYNE 5W 0349 N0JRN 339 MO JERRY 5W 0352 W9XT 559 WI GARY 5W 0353 W5JAY 559 AR JAY 5W 0356 W8DIZ 339 OH DIZ 5W 0400 K0UU FOX MN JEFF 5W 0400 KR0U FOX CO TC 5W ------------------------------ Date: Thu, 13 Nov 2003 23:06:52 -0600 From: "Jerry Ford" To: "qrp-l" , "Pigs" , "FSQRP" <4sqrp@mailman.qth.net>, "FPigs" , Subject: [161215] Results of NOV. " RUN FOR THE BACON" sprint Message-ID: <02d901c3aa6d$1e8b2ae0$4a78da0c@mchsi.com> Just a note to say thanks to everyone who participated in the Nov. RUN FOR THE BACON spint sponcored by the Flying Pig QRP Club International. After much consideration, we have decided to make this a monthly event to be held on the 3rd Sunday evening of each month starting in Jan. Keep in mind our goal isn't to compete with other clubs or activities but to give everyone another opportunity to have some fun. Here are the results of Nov. The big winner this month was Paul AA4XX Congratulations Paul !! reporting: Paul AA4XX 960 points Carter N3AO 867 Bill K1EV 686 Jerry N0JRN 430 Bill K4BX 420 Bill N7MFB 341 Curt WB8YYY 279 Garie K8KFJ 260 Tim K9NX 252 Mike WB8BXN 224 Jim K8MIA 216 John KW4JS 207 Howard W7ILW 108 Armin VE3TEQ 80 Lloyd K3ESE 65 Diz W8DIZ 40 Dan KC5GXL 27 Jim KG4LDY 14 George N2JNZ 12 and Dean KH6B 0 darn the bands anyway !! It was great fun and again I appreciate each and every one that joined in with us to make it a good time. Hope to see all of you for next months sprint. It will be held on the second Sunday evening in Dec. so you can still come out a play without interfering with the holidays. 72 / 73 and a big ole OINK OINK Jerry N0JRN FP # 546, 4SQRP, ARS # 923, ARCI # 11049, ARRL, Springfield, Mo. MP + #8 http://home.mchsi.com/~n0jrn ------------------------------ Date: Thu, 13 Nov 2003 22:55:20 -0700 From: "John Stevens" To: "'Low Power Amateur Radio Discussion'" Subject: [161216] RE: Hamradio IP numbers Message-ID: <000901c3aa73$e3d73a40$0201a8c0@k5js.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Bob writes: <<< That only gives the TLD information. This file lists all the 44.0.0.0 entries: . I couldn't connect to that server just now, but >>> The URL is slightly different these days and is now as follows: 73 john k5js ------------------------------ Date: Fri, 14 Nov 2003 07:30:08 -0500 From: Alex To: Low Power Amateur Radio Discussion Subject: [161217] Re: KX1 Queations Message-ID: <3FB4CAD0.F74900DA@amsat.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Let's try this with Yaecomwood. ;) 73, --Alex KR1ST http://www.kr1st.com Wayne Burdick wrote: > > Hi Rich, > > Great questions! Here are the answers: ------------------------------ Date: Fri, 14 Nov 2003 07:54:08 -0600 From: "Pat Whelton" To: "Low Power Amateur Radio Discussion" Subject: [161218] PayPal Notification Message-ID: <002901c3aab6$c6ab7100$8901a8c0@Earthlink.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit This morning I received one of those "Your PayPal Account is About to Expire" messages and I consider it suspect. My wife tells me there is a site you can forward these messages to for verification. Does anyone have the email address? Thanks, Pat - KZ5J ------------------------------ Date: Fri, 14 Nov 2003 09:10:15 -0500 From: "David Hinerman" To: "qrp-l" Subject: [161219] RE: Attic antenna feedlines Message-ID: <000001c3aab9$0671aa50$7a032a0a@nyroc.ametek.com> MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit > I am looking for ideas about how some folks run feedlines up to the attic. > TIA and 73 > Pete NV4V Pete, When I had an attic I ran coax up the laundry chute. Dave ------------------------------ Date: Fri, 14 Nov 2003 08:42:25 -0600 (CST) From: Dale Botkin To: Pat Whelton Cc: Low Power Amateur Radio Discussion Subject: [161220] Re: PayPal Notification Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Fri, 14 Nov 2003, Pat Whelton wrote: > This morning I received one of those "Your PayPal Account is About to > Expire" messages and I consider it suspect. My wife tells me there is a > site you can forward these messages to for verification. Does anyone have > the email address? This is OT, but probably of interest to several people. Why on earth would a PayPal account "expire"? If the email is asking for ANY information, or has a link in it, I'd ignore it. You can type the URL in yourself to get to PayPal's site and check/verify any information there. Here's a link to their fraud prevention suggestions: ObQRP: Where are people getting the BNC connectors I see used in many Altoids tin projects? All the ones I find have a pretty deep projection behind the panel, in other words they take up a lot of space in the tin. I have seen some that look like they only take up a quarter inch or so. Got a part number for those? Has Mouser got 'em? 72, Dale - N0XAS -- It's a thankless job, but I've got a lot of Karma to burn off. PicoKeyer Analog with pot speed control now available! Or add memory and more to your Rock-Mite -- http://www.hamgadgets.com ------------------------------ Date: Fri, 14 Nov 2003 09:46:15 -0500 From: "w8diz" To: , Subject: [161221] Course study in Space WX Message-ID: <002c01c3aabe$112ce950$b8cf1d41@cinci.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi Gang, Found this link about Space WX interesting and thought I'd pass it along. Everything you ever wanted to know about Space weather and more. Not cheap! http://www.spacew.com/www/course.html Watch out Paul...I'm after your job LOL 72 & "oo's" - Dieter (DIZ) Gentzow - W8DIZ - Loveland, Ohio Clermont County - EM79uf - near Cincinnati; 39:13:05N 84:18:18W RIG:multiPIG+ ANT:67 FT Vertical Dipole http://kitsandparts.com ------------------------------ Date: Fri, 14 Nov 2003 09:48:52 -0500 From: "John H. Shannon" To: Subject: [161222] 1000 Mile per watt award - Addendum Message-ID: <001001c3aabe$78df15a0$467466a6@alltel.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Thanks to W5USJ, I've added a second distance calculator to my links. This one does both kilometers and miles, as well as a MPW calculation, although I don't think it does bearings as the first one does. Again see my Links section - Miscellaneous page, look for Distance Calculator. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 - John, K3WWP - 100% CW & QRP using simple wire antennas. http://home.alltel.net/johnshan/ My website is now in its eighth year of operation and includes the following: DX QSL Routes ** Operating Tips QRP Rigs Info ** CW Contest Calendar Daily Propagation Info ** Your CW Stories Teens and CW ** Monthly polls Categorized Quality Links ** MUCH MORE If you love Morse Code, please join the FISTS club - http://www.fists.org I'm proud to be FISTS # 2002 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ------------------------------ Date: Fri, 14 Nov 2003 07:51:54 -0700 (GMT-07:00) From: David Ek To: qrp-l@lehigh.edu Subject: [161223] Re: PayPal Notification Message-ID: <17561418.1068821514855.JavaMail.root@skeeter.psp.pas.earthlink.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Pat, spoof@paypal.com. I also get them for ebay (spoof@ebay.com) and other sites (like for credit cards that I don't have) I've even gotten messages that purport to be from Earthlink (Earthlink provides a place on its web site where you can enter the URL for the link to report it as fraudulent). NEVER, NEVER, NEVER assume that one of these is legit--no matter how legit it looks. Personally, I like to go to the link that these messages provide (if it's still active) and leave them a little message in one of the form fields... (futile, I know, but it makes me feel good!) 73 de Dave NK0E -------------------------- Pat wrote: This morning I received one of those "Your PayPal Account is About to Expire" messages and I consider it suspect. My wife tells me there is a site you can forward these messages to for verification. Does anyone have the email address? Thanks, Pat - KZ5J ------------------------------ Date: Fri, 14 Nov 2003 08:59:30 -0600 From: "Tony Martin W4FOA" To: , "Low Power Amateur Radio Discussion" Subject: [161224] Re: PayPal Notification Message-ID: <006701c3aabf$e847a230$6401a8c0@Delldude> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Pat, I got 3 or 4 of them yesterday...never have gotten them before. I suspected something fishy, so I just deleted the messages. Tony ----- Original Message ----- From: "Pat Whelton" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 7:54 AM Subject: PayPal Notification > This morning I received one of those "Your PayPal Account is About to > Expire" messages and I consider it suspect. My wife tells me there is a > site you can forward these messages to for verification. Does anyone have > the email address? > > Thanks, > > Pat - KZ5J > ------------------------------ Date: Fri, 14 Nov 2003 07:59:33 -0700 From: "Rod N0RC" To: "qrp-l" Subject: [161225] O'scope info Message-ID: <018501c3aabf$ece2fc40$6501a8c0@greyrock> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Folks, I assembled a summary of scope info resulting from my recent O'scope post, where to buy, what to get, and some other useful reference info. Hope this is useful to you.... And a big THANK YOU to all who contributed to this QRP-L information collective. 73, Rod N0RC ---------- Scopes ---------- Tek --- 453, 454, 465, 7600(see below**) HP --- HP-1740A Another interesting possibility a ProTek scope card, see http://www.gigatest.net/hungchang/protek-2100.htm I don't know much about this option but I intend to learn more about it. ---------- Suppliers ---------- Scopes & Stuff -------------- eBay, www.ebay.com * * * ..."Take a look at www.web-tronics", Dave K2ZU * * * Garey - K4OAH write" "I would HIGHLY recommend Bob Garcia here in Marietta Georgia. Bob is "local" for me, and is totally reliable and competent. A much better source than E-Bay for a good, working scope." Bob Garcia 845 Fairfield Drive Marietta, GA 30068-2619 Tel: 1-770-977-5701 * * * Floyd, NQ7X offers: "...A-COMM Electronics, 11891 E.33rd Ave. Unit C Aurora, CO ---- (303) 341-2283 web- http://WWW.A-COMM.COM.....$200 on 11/29/02....does the job here. Also bought the service manual $48 and operating manual $24 from A.G.Tannenbaum http://www.agtannenbaum.com" * * * Marvin W4UXJ suggests: "Bob Garcia, Mr. Scopeman esaronel@bellsouth.net He is highly thought of in the world of scopes. His prices are great and he stands behind his scopes 100%. I have known him for 15 years and I think that he is a man of high integrity and morals. He is located in Marietta, GA 18 Miles NW of Atlanta." Probes ------ >From Brian, KB9BVN: ..."Ocean State Electronics sell great generic probes for Tek scopes too...less than $20 if memory serves me correctly....." ($25! see http://www.oselectronics.com/ose_p12.htm bottom of page, rc) ---------- Scope Info ---------- >From Conrad, NN6CW: ------------------- ..."There is a guy up in "Tek Country" who refurbishes the Tek 465s. His name is, Stan Griffiths, W7NI. He authored a book on the classic Tek Scopes: "Everything you wanted to know about Tektronix scopes of the 50's & 60's" I believe Stan is still refurbing Tek scopes. Could be you could contact him and buy one. I talked with him years ago and he seemed like a nice fellow. And there are other retired Tek engineers who have hobby businesses dong the same sort of thing....." A little "googlin' yielded this useful link: Stan, W7NI http://www.reprise.com/ash/clients2/home.asp And on that site is a useful like to the 453/454 scope Bill's Tektronix 453 and 454 Info Pages http://www.reprise.com/host/scopes/ Good articles on grounding, probes, what to look for where to buy...etc. ** From Wes, W7ZOI (ex Tek emp.) -------------------------------- "The portables...starting with the 453, were all built for the computer industry and were hauled in and out of various facilities by IBM service folks to fix things as they broke. Many saw a lot of "action." But they were designed to take it." "Another "sleeper" is the 7600 line. A 7603 is a 3 wide main frame that only has a 100 MHz bandwidth. The 7704 was a 4 wide 200 MHz box. Because the 7600 is a bit slower, it is not a popular, and hence not as expensive. I've seen some wonderful deals on EBay with that series. I have a warm place for that series because I worked on that design team, having done the storage circuits for the 7613 and 7623 as well as the physics for the CRT in the 7623." Paul Harden, NA5N ----------------- Paul's NA5N's "Oscilloscope Primer", 4 parts, I found it here: http://qrp.kd4ab.org/1999/991206/0031.html (part 1) http://qrp.kd4ab.org/1999/991206/0032.html (part 2) http://qrp.kd4ab.org/1999/991206/0033.html (part 3) http://qrp.kd4ab.org/1999/991206/0034.html (part 4) * * * * * ------------------------------ Date: Fri, 14 Nov 2003 10:50:26 -0500 From: "n3drk" To: "Low Power Amateur Radio Discussion" Subject: [161226] Re: PayPal Notification Message-ID: <03b201c3aac7$09717470$6400a8c0@n3drk> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I got one last night also and noticed there were 12.4 kb in the file. Thought it may be an executable so deleted it. john ----- Original Message ----- From: "Tony Martin W4FOA" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 9:59 AM Subject: Re: PayPal Notification > Pat, > I got 3 or 4 of them yesterday...never have gotten them before. I suspected > something fishy, so I just deleted the messages. > Tony > > > > ----- Original Message ----- > From: "Pat Whelton" > To: "Low Power Amateur Radio Discussion" > Sent: Friday, November 14, 2003 7:54 AM > Subject: PayPal Notification > > > > This morning I received one of those "Your PayPal Account is About to > > Expire" messages and I consider it suspect. My wife tells me there is a > > site you can forward these messages to for verification. Does anyone have > > the email address? > > > > Thanks, > > > > Pat - KZ5J > > > > ------------------------------ Date: Fri, 14 Nov 2003 08:04:26 -0800 (PST) From: Tom Sevart To: Low Power Amateur Radio Discussion Subject: [161227] Re: PayPal Notification Message-ID: <20031114160426.64122.qmail@web9603.mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Another "scam" going on is where people try to get your ebay ID & password, then list various items using the most expensive options. My mother & sister fell victim to these idiots who ran up their ebay accounts into hundereds of dollars. Luckily they were able to get things straightened out with ebay & didn't have to pay for it. It doesn't appear the hackers get anything out of it other than making a headache for ebay users. ===== Tom Sevart N2UHC http://www.geocities.com/n2uhc __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree ------------------------------ Date: Fri, 14 Nov 2003 11:08:36 -0500 From: "John J. McDonough" To: "Low Power Amateur Radio Discussion" Cc: Subject: [161228] Re: PayPal Notification Message-ID: <011201c3aac9$93bf6bd0$090044c0@BrianBoru> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit A couple of points about this, and any similar notification.... First and foremost, you should have your mail client set to not view HTML messages. Many of these messages will send notice to the web server that you are a valid email address, ripe for selling to others, as soon as you view the thing, even in the preview pane. If you get an HTML message that you DO want to see, you can simply open the HTML attachment. This also means that you won't waste time downloading a bunch of pictures that you don't care about, either. And unless you are very careful about your browser settings, HTML can include stuff that's dangerous. You can execute a virus or worm without actually opening an attachment. Now, some simple checks. Open the message source. In Outlook Express, right-click on the message, choose Properties, select the Details tab, and press Message Source. Look at the actual email address. You might see something like: From: "PayPal Customer Service" In the message list, all you would see is "PayPal Customer Service". In fact, the message is from an AOL account (MSN and Yahoo are also real common). Why would Pay Pal be using an AOL account? If the address looks valid, look at the very last "Received From" header: Received: from (HELO g3yd6j) [207.212.231.223] by pcp02426257pcs.kensgt01.pa.comcast.net with ESMTP id 44792792; Thu, 09 Oct 2003 11:41:59 +0300 Normally, the stuff after HELO *or* the stuff after the by (pcp024.....) should match up with the email address domain. If they don't, then the sender was trying to hide his source ... not something a legitimate sender would do. Here, the sender was using comcast to send his message, again, not likely for a large org like PayPal (although typical for something like arrl.net). A little farther on, there should be a section of gobbldeygook that starts with Content-Type: text/html; Look through that for long strings of numbers or number letter combinations that seem to be random. If these are preceeded by an IMG or HREF tag, then it's purpose is to track you so that the sender can validate that you at least looked at the email. Once he knows that, he can promise his customers that your email address is valid. If the tag is an HREF tag, this isn't a dead giveaway that the sender is illegitimate, but it is a red flag. If it's on an IMG tag, then guaranteed this is a bad guy. A little harder to spot is text that is written as the same color as the background. Here they want to get by your spam filters, or get you to agreee to something you didn't see. This can be pretty hard to tell, though, unless you actually download and view the images. Another red flag is if the HTML itself is MIME encoded. The only reason to do this is to prevent you, or your spam filters, from seeing what the HTML is going to do before you execute it. If someone does this, they are a bad guy. If you have HTML turned off, you will sometimes see something like: n cixvccttie iarctwmtcsr yak pox c spoaefqxy cckp or am watching a lot of my mice from whom I removed the tails at birth, and I with sufficient energy public in the preview pane without even looking at the HTML. If you had HTML enabled, you would never have seen this, but the idea here is to have some content that can get by the spam filters. Again, a legitimate sender isn't going to feel the need to do this. Almost all the spoofs use some trick like this, so if you see something you aren't sure of, these are ways to get a little more data. If your email passes all these tests, it's still no guarantee that it's real, but probably 95% of all the spoofs will fail one of these tests. 72/73 de WB8RCR http://www.qsl.net/wb8rcr didileydadidah QRP-L #1446 Code Warriors #35 ----- Original Message ----- From: "Pat Whelton" Subject: PayPal Notification > This morning I received one of those "Your PayPal Account is About to > Expire" messages and I consider it suspect. ------------------------------ Date: Fri, 14 Nov 2003 11:47:33 -0500 From: "n3drk" To: "Low Power Amateur Radio Discussion" Subject: [161229] swr,watt meter for qrp Message-ID: <03d401c3aacf$05c7acb0$6400a8c0@n3drk> MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit I am looking for a qrp swr, wattmeter for my K2. What are some of the most accurate that you guys are using? Thanks john ------------------------------ Date: Fri, 14 Nov 2003 11:52:42 -0500 From: "David Hinerman" To: "qrp-l" Subject: [161230] RE: PayPal Notification Message-ID: <000201c3aacf$b84779b0$7a032a0a@nyroc.ametek.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit John, Thanks for all the hints on identifying scam email. I recently got one that was a pretty good spoof. It was from "Citibank Card Security" and the originating address showed as being from the citicard.com domain. That seemed plausible enough that I continued reading. They said they were updating customer email records doe to recent scam activity and wanted me to go to a Web site and enter my card number and PIN to verify my identity. That told me right there that it was a scam, since they'll NEVER ask for a PIN. But the link to the Web page was to citibank.com with a bunch of gibberish (looked a lot like the database-driven URLs you see these days) following it. Again, that part seemed plausible, but buried inside the gibberish was a URL for a domain with a ".ru" suffix. I'm pretty sure it would have redirected me to a non-Citibank site. Normally I just delete such messages, but since this one was clever enough to get past my first line of defense I thought Citibank should know about it. I forwarded it to their security group. Dave ---------------------------- David Hinerman WD8CIV wd8civ@worldnet.att.net > -----Original Message----- > From: owner-qrp-l@Lehigh.EDU [mailto:owner-qrp-l@Lehigh.EDU]On Behalf Of > John J. McDonough > Sent: Friday, November 14, 2003 11:09 AM > To: Low Power Amateur Radio Discussion > Subject: Re: PayPal Notification > > > A couple of points about this, and any similar notification.... > > First and foremost, you should have your mail client set to not view HTML > messages. Many of these messages will send notice to the web server that > you are a valid email address, ripe for selling to others, as soon as you > view the thing, even in the preview pane. If you get an HTML message that > you DO want to see, you can simply open the HTML attachment. This also > means that you won't waste time downloading a bunch of pictures that you > don't care about, either. And unless you are very careful about your > browser settings, HTML can include stuff that's dangerous. You > can execute > a virus or worm without actually opening an attachment. > > Now, some simple checks. > > Open the message source. In Outlook Express, right-click on the message, > choose Properties, select the Details tab, and press Message Source. > > Look at the actual email address. You might see something like: > > From: "PayPal Customer Service" > > In the message list, all you would see is "PayPal Customer Service". In > fact, the message is from an AOL account (MSN and Yahoo are also real > common). Why would Pay Pal be using an AOL account? > > If the address looks valid, look at the very last "Received From" header: > > Received: from (HELO g3yd6j) [207.212.231.223] > by pcp02426257pcs.kensgt01.pa.comcast.net with ESMTP id 44792792; > Thu, 09 Oct 2003 11:41:59 +0300 > > Normally, the stuff after HELO *or* the stuff after the by (pcp024.....) > should match up with the email address domain. If they don't, then the > sender was trying to hide his source ... not something a legitimate sender > would do. Here, the sender was using comcast to send his message, again, > not likely for a large org like PayPal (although typical for > something like > arrl.net). > > A little farther on, there should be a section of gobbldeygook that starts > with > > Content-Type: text/html; > > Look through that for long strings of numbers or number letter > combinations > that seem to be random. If these are preceeded by an IMG or HREF > tag, then > it's purpose is to track you so that the sender can validate that you at > least looked at the email. Once he knows that, he can promise > his customers > that your email address is valid. If the tag is an HREF tag, this isn't a > dead giveaway that the sender is illegitimate, but it is a red flag. If > it's on an IMG tag, then guaranteed this is a bad guy. > > A little harder to spot is text that is written as the same color as the > background. Here they want to get by your spam filters, or get you to > agreee to something you didn't see. This can be pretty hard to tell, > though, unless you actually download and view the images. > > Another red flag is if the HTML itself is MIME encoded. The only > reason to > do this is to prevent you, or your spam filters, from seeing what the HTML > is going to do before you execute it. If someone does this, they > are a bad > guy. > > If you have HTML turned off, you will sometimes see something like: > > n cixvccttie iarctwmtcsr yak pox c spoaefqxy cckp > > or > > am watching a lot of my mice from whom I removed > the tails at birth, and I with sufficient energy public > > in the preview pane without even looking at the HTML. If you had HTML > enabled, you would never have seen this, but the idea here is to have some > content that can get by the spam filters. Again, a legitimate > sender isn't > going to feel the need to do this. > > Almost all the spoofs use some trick like this, so if you see > something you > aren't sure of, these are ways to get a little more data. If your email > passes all these tests, it's still no guarantee that it's real, > but probably > 95% of all the spoofs will fail one of these tests. > > 72/73 de WB8RCR http://www.qsl.net/wb8rcr > didileydadidah QRP-L #1446 Code Warriors #35 > > > ----- Original Message ----- > From: "Pat Whelton" > Subject: PayPal Notification > > > > This morning I received one of those "Your PayPal Account is About to > > Expire" messages and I consider it suspect. > ------------------------------ Date: Fri, 14 Nov 2003 12:01:02 -0500 From: "Dean-K2WW" To: Subject: [161231] re; NOV QST Message-ID: <004801c3aad0$e30e4ab0$03fea8c0@deanlaptop> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sure can't blame 'um for overspending on poor Ed's grocery getter... ;-) 72 Dean-K2ww Ps: For $39 a year/$34 (if you are a senior) You get ARRL voting rights Otherwise... > If that's how it "pretty much has to work", then which ARRL programs > benefited from QST being taken off the news stand? (now don't just say > "all", be just as specific as you have requested above) > > 73, > --Alex KR1ST > ------------------------------ Date: Fri, 14 Nov 2003 12:04:47 -0500 From: "Dennis Ponsness" To: w8diz@cinci.rr.com, fpqrp-l@fpqrp.com, qrp-l@Lehigh.EDU Subject: [161232] Re: [fpqrp] Course study in Space WX Message-ID: Mime-Version: 1.0 Content-Type: text/plain; format=flowed OUCH! That is expensive! I wonder if Paul could recommend a couple of books- beginning college level type that one could get and read... 72 es oo Dennis - WB0WAO EN84ij Iosco County, Michigan MultiPig+ #3 - K2 #3555 DSW-II-20 - SW-40+ - SW-30+ RM-20 - RM-40 NJQRP #329 - FPQRP #-347 - SOC #499 GACW #622 - ARS #1363 - QRP Canada #248 Charter Member - Michigan DX Association www.qsl.net/wb0wao :=) >From: "w8diz" >Reply-To: "w8diz" >To: , >Subject: [fpqrp] Course study in Space WX >Date: Fri, 14 Nov 2003 09:46:15 -0500 > >Hi Gang, > >Found this link about Space WX interesting and thought >I'd pass it along. Everything you ever wanted to know >about Space weather and more. Not cheap! > >http://www.spacew.com/www/course.html > >Watch out Paul...I'm after your job LOL > >72 & "oo's" - Dieter (DIZ) Gentzow - W8DIZ - Loveland, Ohio >Clermont County - EM79uf - near Cincinnati; 39:13:05N 84:18:18W >RIG:multiPIG+ ANT:67 FT Vertical Dipole http://kitsandparts.com > > > >-To unsubscribe, mail to majordomo@fpqrp.com, msg: unsubscribe fpqrp-l - _________________________________________________________________ MSN Messenger with backgrounds, emoticons and more. http://www.msnmessenger-download.com/tracking/cdp_customize ------------------------------ Date: Fri, 14 Nov 2003 11:09:04 -0600 From: "Joe Martin" To: "QRP" Subject: [161233] Re: PayPal Notification Message-ID: <018f01c3aad2$0281f030$3f4dd6d0@JoesHome1> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit It is a fraud, you should forward it to PayPal ( spoof@paypal.com ). They will get back to you. 73 de KM5CW, Joe ARCI #11368 FP#-697 FISTS#4217 GRID EM13kf FtWorth,Tx 32:49:31N 97:06:13W ---------| Virus Scanned by Symantec |--------- ----- Original Message ----- From: "Pat Whelton" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 7:54 AM Subject: PayPal Notification > This morning I received one of those "Your PayPal Account is About to > Expire" messages and I consider it suspect. My wife tells me there is a > site you can forward these messages to for verification. Does anyone have > the email address? > > Thanks, > > Pat - KZ5J > > ------------------------------ Date: Fri, 14 Nov 2003 13:04:52 -0500 From: "John J. McDonough" To: "Low Power Amateur Radio Discussion" Cc: Subject: [161234] Re: PayPal Notification Message-ID: <018c01c3aad9$cd9a6a20$090044c0@BrianBoru> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Yep, often they use all sorts of tricks to get you to another site. I neglected to mention the bit about burying the real URL, also, a misspelled URL is a popular one - it only takes ten bucks to buy a domain these days, so if you can find a paypal.biz or a pypal.com or whatever, you can send out a lot of spam before PayPal files an infringement suit against you, if they can find you! Oh, and the originating address can be spoofed by any ten year old. Anything that comes after those routing headers can be modified by the sender. 72/73 de WB8RCR http://www.qsl.net/wb8rcr didileydadidah QRP-L #1446 Code Warriors #35 ----- Original Message ----- From: "David Hinerman" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 11:52 AM Subject: RE: PayPal Notification > I recently got one that was a pretty good spoof. It was from "Citibank Card > Security" and the originating address showed as being from the citicard.com > domain. That seemed plausible enough that I continued reading. They said ------------------------------ Date: Fri, 14 Nov 2003 13:09:39 -0500 From: Alex To: Low Power Amateur Radio Discussion Subject: [161235] Re: re; NOV QST Message-ID: <3FB51A63.3707DFE0@amsat.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Dean-K2WW wrote: > Ps: > For $39 a year/$34 (if you are a senior) > You get ARRL voting rights I already voted on the ARRL, for free! > Otherwise... Get a subscription to CQ Magazine? You're right! Has interesting QRP articles, too. 73, --Alex KR1ST http://www.kr1st.com ------------------------------ Date: Fri, 14 Nov 2003 10:11:57 -0800 (PST) From: David Toepfer To: n3drk@triad.rr.com, Low Power Amateur Radio Discussion Subject: [161236] Re: swr,watt meter for qrp Message-ID: <20031114181157.51820.qmail@web12803.mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii --- n3drk wrote: > I am looking for a qrp swr, wattmeter for my K2. What are some of the most > accurate that you guys are using? These are the best advice I have heard over time: non-kit: Radio Shack HF SWR/Power Meter ( http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=21-534 ) kit: OHR WM-2 ( http://www.ohr.com/wattmeter.htm ) NoGA QRP NoGaWaTT ( http://www.nogaqrp.org/projects/NOGAwatt/kitinfo.html ) as yet unavailable: Elecraft has promised one is in the works, so I am watching their products page ( http://elecraft.com/elecraft_products_page.htm ), but nothing yet ------------------------------ Date: Fri, 14 Nov 2003 13:20:36 -0500 From: "John H. Shannon" To: Subject: [161237] Re: PayPal Notification Message-ID: <000701c3aadc$06c1d840$467466a6@alltel.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I see a lot of you are worried (rightfully so) about emails and viruses. I use a program called MailWasher that allows me to handle my mail right on the server before I ever download any of it to my computer. I've seen those PayPal messages and just delete them right off the server so whatever they are, they don't bother me at all. MailWasher has a block list, friends list, a filter editor, and much more so that you can do just about anything with your email that you want. It can even delete emails automatically without you ever seeing them if you wish, but I prefer to look at each header myself before letting MailWasher delete the message. As an example of the many things you can do, I've designed a filter to label all of my messages that are from QRP-L so I can deal with them quickly before or after I've done my other emails. I've got a link to MailWasher plus many other helpful programs for those of us who love to play with our computers on my web site in my Links section - Useful Non-Ham Info page. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 - John, K3WWP - 100% CW & QRP using simple wire antennas. http://home.alltel.net/johnshan/ My website is now in its eighth year of operation and includes the following: DX QSL Routes ** Operating Tips QRP Rigs Info ** CW Contest Calendar Daily Propagation Info ** Your CW Stories Teens and CW ** Monthly polls Categorized Quality Links ** MUCH MORE If you love Morse Code, please join the FISTS club - http://www.fists.org I'm proud to be FISTS # 2002 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ------------------------------ Date: Fri, 14 Nov 2003 14:02:07 -0500 From: "Mike Yetsko" To: , "Low Power Amateur Radio Discussion" Subject: [161238] Re: PayPal Notification Message-ID: <009301c3aae1$cf349880$0200a8c0@charter.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I find it hard to believe that places like Citibank wouldn't have a department set up specifically for this that would provide 'fake' account and PIN numbers. (Then, maybe they do...) That would appear real, but when attempted to be used would trigger all kinds of alarms. Mike ------------------------------ Date: Fri, 14 Nov 2003 19:14:30 -0000 From: "Leon Heller" To: "Low Power" Subject: [161239] Philips LPC2104 ARM MCU Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I've just got a little development system using the new Philips LPC2104 ARM MCU working: http://www.geocities.com/leon_heller/lpc2104.html The LPC210x series chips are probably overkill for most amateur radio applications (32-bit RISC), but they are cheap (about $10) and quite fast (60 MIPS). They have virtually everything one needs on the chip, ADCs, PWM, I2C, SPI, UARTs, etc. My little board is designed for software upload via the RS-232 port, using the Philips ISP software. I'll be adding a JTAG interface to the prototyping area for debugging using a Wiggler. With GDB stub code, it could be debugged using GDB via the RS-232 port. Leon Heller, G1HSM Email: aqzf13@dsl.pipex.com http://www.geocities.com/leon_heller ------------------------------ Date: Fri, 14 Nov 2003 19:11:05 -0000 From: "brian russell" To: Cc: "brian g0nsl" Subject: [161240] Re: Just a thought on set decorating. Message-ID: <001f01c3aae3$a0d15f80$1f1f2850@briandlatmd1ba> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Mention was made of the number of actors and other celebrities who held amateur licences. I recall an old timer telling me once how he worked Buddy Rich and Robert Montgomery in post WW2 days, any other" memories "??? 72, Brian. G NSL-QRP. ----- Original Message ----- From: "Bruce Muscolino" To: "Low Power Amateur Radio Discussion" Sent: Wednesday, November 12, 2003 11:24 PM Subject: Just a thought on set decorating. > We all see TV shows and movies where amateur radio gear is used as "set > decoration". Please remember that the set decorator has to decorate the > set so that it will be somewhat believable to the audience. The > audience generally has no real idea of what communications equipment is > for or really looks like. And further, the number of actors and others > who are licensed hams is quite small. That they could swap a Heathkit > for an Eico is a small thing. BTW, I wish my HW-16 looked so good! > > 73 > ------------------------------ Date: Fri, 14 Nov 2003 13:28:14 -0600 From: Michael Goins To: Subject: [161241] WTB Message-ID: <054HkNTCo5216S06.1068838094@cmsweb06.cms.usa.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Anyone have a reasonable source for single-hole BNC chassis connectors? Need some for a number of projects on the bench. Thanks. mike k5wmg ------------------------------ Date: Fri, 14 Nov 2003 14:36:00 -0500 From: "w8diz" To: "Low Power Amateur Radio Discussion" Subject: [161242] Re: swr,watt meter for qrp Message-ID: <006801c3aae6$89605e20$b8cf1d41@cinci.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Here is another SWR/POWER meter kit. http://partsandkits.com/swr.asp Works great for field day night ops :) Also has two power ranges, 0-0.5 and 0-5 adjustable up to 10 watts. 72 & "oo's" - Dieter (DIZ) Gentzow - W8DIZ - Loveland, Ohio Clermont County - EM79uf - near Cincinnati; 39:13:05N 84:18:18W RIG:multiPIG+ ANT:67 FT Vertical Dipole http://kitsandparts.com ----- Original Message ----- From: "David Toepfer" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 1:11 PM Subject: Re: swr,watt meter for qrp --- n3drk wrote: > I am looking for a qrp swr, wattmeter for my K2. What are some of the most > accurate that you guys are using? These are the best advice I have heard over time: non-kit: Radio Shack HF SWR/Power Meter ( http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=21-534 ) kit: OHR WM-2 ( http://www.ohr.com/wattmeter.htm ) NoGA QRP NoGaWaTT ( http://www.nogaqrp.org/projects/NOGAwatt/kitinfo.html ) as yet unavailable: Elecraft has promised one is in the works, so I am watching their products page ( http://elecraft.com/elecraft_products_page.htm ), but nothing yet ------------------------------ Date: Fri, 14 Nov 2003 13:28:35 -0600 From: "Jerry Ford" To: "qrp-l" , "Elecraft@mailman.qth.net" , Subject: [161243] On the wild porker hunt again Message-ID: <03d401c3aae5$7fe8c5e0$4a78da0c@mchsi.com> OK folks, The bands are just killen me here in the evenings. Seems things are running shorter this afternoon so MAYBE I can hear something. LL has jumped out in the lead again. He just loves making me work. So, are there any Flying Pig club members out there looken for something to do to burn some time. I'm going to jump up to 14.045 +/- at 2000z. Stop by and say howdy. Anyone else, piggie member or not, run buy freq and lets chew the fat. 72 es oo Jerry N0JRN FP # 546, 4SQRP, ARS # 923, ARCI # 11049, ARRL, Springfield, Mo. MP + #8 http://home.mchsi.com/~n0jrn ------------------------------ Date: Fri, 14 Nov 2003 15:23:13 -0500 From: Steven Weber To: qrp-l@lehigh.edu Subject: [161244] Toaster Oven Message-ID: <3.0.6.32.20031114152313.007a2ba0@mailhost.ncia.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" A while back Chuck Adams suggested using a toaster oven to bake enamel paint onto cabinets. Spending $30.00 or so for a new oven you can't use for much else once you bake paint in it seemed a bit much to me, seeing how often I actually paint something. However, I found a local church sponcered second hand store had a stack of these for $5.00 or less. At that price, worth it to get one to bake paint in. 72, Steve, KD1JV "Melt Solder" White Mountains of New Hampshire http://www.qsl.net/kd1jv/ ------------------------------ Date: Fri, 14 Nov 2003 15:26:40 -0500 From: "David Hinerman" To: "qrp-l" Subject: [161245] RE: Philips LPC2104 ARM MCU Message-ID: <000401c3aaed$9c3a66b0$7a032a0a@nyroc.ametek.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit > I've just got a little development system using the new Philips > LPC2104 ARM > MCU working: > > http://www.geocities.com/leon_heller/lpc2104.html > > The LPC210x series chips are probably overkill for most amateur radio > applications (32-bit RISC), but they are cheap (about $10) and quite fast > (60 MIPS). They have virtually everything one needs on the chip, > ADCs, PWM, > I2C, SPI, UARTs, etc. Leon, There's no such thing as "overkill" for an amateur radio application - just too expensive. At $10, it's not too expensive. I wonder how it'd do in DSP applications. At work we're using a Hitachi SH-1 for DSP (not at audio rates, though) and it's nowhere near 60 MIPS. Dave ------------------------------ Date: Fri, 14 Nov 2003 15:54:26 -5 From: "Bill Kelsey - N8ET - Kanga US" To: Low Power Amateur Radio Discussion Subject: [161246] Ft. Wayne - Last reminder Message-ID: <3FB4FAB2.28191.1AB35191@localhost> MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body I am headed out the door for Ft. Wayne. Hope to see a lot of you at the QRP forum tomorrow at 1:30. If you can't make the forum - at least stop by the Kanga US booth and say hi. Look for the forest of DK9SQ masts! 73 - Bill - N8ET Kanga US kanga@bright.net http://www.bright.net/~kanga/ 419-423-4604 ------------------------------ Date: Fri, 14 Nov 2003 21:10:41 -0000 From: "Joe Martin" To: "QRP" Subject: [161247] Re: On the wild porker hunt again Message-ID: <024e01c3aaf3$c353f4e0$3f4dd6d0@JoesHome1> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit qrm killing me will try agn in 2 hrs. KM5CW QRPARCI #11368 FP#-697 FISTS#4217 GRID EM13kf FtWorth,Tx 32:49:31N 97:06:13W ---------| Virus Scanned by Symantec |--------- ----- Original Message ----- From: "Jerry Ford" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 7:28 PM Subject: On the wild porker hunt again > OK folks, The bands are just killen me here in the evenings. Seems > things are running shorter this afternoon so MAYBE I can hear > something. > > LL has jumped out in the lead again. He just loves making me work. > So, are there any Flying Pig club members out there looken for > something to do to burn some time. > > I'm going to jump up to 14.045 +/- at 2000z. Stop by and say > howdy. Anyone else, piggie member or not, run buy freq and > lets chew the fat. > > 72 es oo Jerry N0JRN > FP # 546, 4SQRP, ARS # 923, ARCI # 11049, ARRL, > Springfield, Mo. MP + #8 > http://home.mchsi.com/~n0jrn > > > ------------------------------ Date: Fri, 14 Nov 2003 12:51:39 -0900 From: Jim Larsen To: "qrp-l@lehigh.edu" , pQRP - Pacific NW QRP List , Subject: [161248] Great Alaska Ptarmigan Hunt - This Sunday Message-ID: <3FB54E6B.7080608@alaska.net> MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit The Great Alaska Ptarmigan (GAP) Hunt Greetings from Alaska. Here are the Great Alaska Ptarmigan (GAP) and their assigned frequencies. Let's have fun with this hunt and thanks for trying to work Alaska. This is an absolute "First" for Alaska QRPers. Never in history have so many Alaska hams operated QRP at the same time. Notes: Share this email with other mail lists. GAP hunters should call "Up 1 KHz". If 20 meters is dead dead, then check for GAPs on 15 meter frequencies. We have one Great Alaska Ptarmigan who has volunteered to be there for the slower operators. Check for KL0XK on 15 and 40 meters although if those bands are both dead for him, he has an assigned 20 meter spot. Operate from 0000z-0200z 17 November (3-5PM AST Sunday). GAPs will call "CQ GAP", etc. Exchange is RST/SPC/PwrOut e.g., 559 AK 5w (Same as Spartan Sprint) Here are the Great Alaska Ptarmigan: KL7R Mike Juneau AL7OK John Anchorage S AL7FS Jim Anchorage S KL7IKV Lynn Anchorage S KL7CC Jim Anchorage NE KL7GN Gordon Anchorage Mid WL7CDC Doug Anchorage Mid KL7PB Rich Sterling KL WN John Kodiak AL7N Ed Fairbanks KY7J Ken Emmonak - way out west on the Bearing Sea KL7Z Randy Anchorage KL0XK Don Elmendorf AFB 40/15 meters for slower cw ops =============================== 7.108 KL0XK Slow code. If 15/40 dead, then 14.029 14.026 AL7OK 21.026 029 KL0XK but only if he is getting nothing on 15/40 slow code. 032 KL7GN 032 035 038 AL7N 038 041 KY7J 041 044 AL7FS 044 047 KL WN 047 050 KL7Z 050 053 KL7R 053 056 KL7CC 056 059 KL7PB 059 061 WL7CDC 061 064 KL7IKV 064 --- KL0XK 21.108 Slow code. If 15/40 dead, then 14.029 There will be prizes and maybe even certificates for all entries (with SASE). Let's all have fun and work the Great Alaska Ptarmigan. 73, Jim -- Jim Larsen, AL7FS Anchorage, Alaska http://www.qsl.net/al7fs ========================================================================== Here is a primer to get you up to speed on the Great Alaska Ptarmigan (GAP). ========================================================================== www.state.ak.us/adfg/notebook/bird/ptarmiga.htm The Great Alaska Ptarmigan (GAP) Ptarmigan, close relatives of forest and prairie grouse, live in alpine and arctic tundras throughout the northern hemisphere. The birds are quite sociable in winter (get on the air more) and usually feed and roost in the snow close together. (In the snow...that fits) Ptarmigan are notorious for their here-today, gone-tomorrow populations, pulsing between superabundance and virtual absence in just a few years. The causes of the rapid population changes remain a mystery. Many people think that ptarmigan numbers fluctuate rhythmically, with peaks once every 9 or 10 years. (Sounds like Alaska propagation) In early spring, male ptarmigan become intolerant of other males and establish territories that they defend vigorously with aerial chases and a variety of gargling, croaking, and screaming noises. (Noises which we make after another month of lousy propagation) Hunting: Ptarmigan hunting is fun. You never know what to expect from one trip to the next. (Yup, that is Alaska QRP) On opening day you tramp through colorful thickets of willow and dwarf birch, your dog nosing coveys of brown birds out of the brush while you mop your brow and wish you hadn t put on a sweater. Late in September, after facing a strong, cold wind for several fruitless hours (two hours to be exact), you top out on a rocky ridge and suddenly find yourself surrounded by several hundred stretch-necked, pinto-patterned ptarmigan (It could happen). You hang up your shotgun for five months, only to be tolled into the hills again by the bright blue days of March. Warmly clad in parka and mukluks, you snowshoe across narrow alpine valleys following meandering trails of three-pronged ptarmigan tracks across the brilliant snow (We tend to come and go). Ptarmigan hunting can be a serious business (but of course), especially if you live in Alaska s vast hinterland and caribou have been scarce. Then is the time to go after ptarmigan in earnest, using all the tricks at your command (Don't all QRPers use all their tricks?). Snares are very effective when used by those who know the birds well (But of course experience helps). A favorite method is to build a thin fence of close-set willow branches, leaving small openings where the snares are set. Another technique takes advantage of the fact that ptarmigan drag their feet in soft snow (listening for late callers in the pileup). A series of snare loops are tied into a long line, and the loops are placed flat on the ground around a favorite thicket of willows. Birds step into the loops, drag their feet forward--and are caught. ====================== So now you have more information than you ever wanted to know. :-) 73, Jim, AL7FS ------------------------------ Date: Fri, 14 Nov 2003 14:18:07 -0800 From: "Jerry Bartachek" To: "QRP-L Post Msg" Subject: [161249] OHR 500 IF Filter Message-ID: <200311141418.AA28704894@praisescribe.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii I am finding my OHR 500 that I bought used has a really wide receive response with the IF filter and the low pass audio filter in the circuit. (It's wider without the LP filter!) The manual says it is 400 Hz wide at -6dB. I can hear up to 3 simultaneous CW QSO's when the bands are busy. Has anyone successfully modified the 4 pole Xtal IF filter to narrow the skirts? I can clearly hear a CW note starting at about 300 Hz and tuning the VFO, I can still hear it plainly at about 1500 Hz. Sure wish it was narrower. I am afraid I am spoiled by using my Ten-Tec Paragon. Is there anything I can do about it, or should I quit whining? I'm considering an add-on audio bandpass filter from Vectronics. 73 and Thanks, Jerry L. Bartachek KD0CA Washington, IA ____________________________________________________________ Free 20MB Web Site Hosting and Personalized E-mail Service! Get It Now At Doteasy.com http://www.doteasy.com/et/ ------------------------------ Date: Fri, 14 Nov 2003 17:24:44 -0500 From: "Earl Andrews" To: qrp-l@lehigh.edu Subject: [161250] W8JK files (eznec analysis) now on my yahoo group website es my amp too. Message-ID: <200311141724440540.001391D6@mondenet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable I have posted some new stuff on my yahoo group (Earlshamradio)..go to= www.yahoogroups.com and look me up. I have about 12 members..but so= far..Im doing all the posting. I also have some components (standard components..how standard is standard?) discussions posted. See the files and photos area. I also have a picture of my MOSFET QRP AMP..as per QST and the latest ARRL= Handbooks. The coils are wound including the torroids. Im not happy with the "look" of= the project. It is too ugly for even ugly construction. It is manhatten= mounting of pads. Im going to go over it and do some enhancements in the= look of this thing!..Ill post the results. THIS WEB SITE(GROUP) is really growing each day. In about a month or so..it= will be chaulk full of stuff (the best I can come up with). -- 25 years of studying QSTs, ARRL handbooks= and all the other books and magazine articles I have absorbed and filed= away in my 8 drawers of filling cabinet files. 73 Earl VE3AB ------------------------------ Date: Fri, 14 Nov 2003 17:27:30 -0500 (EST) From: Chris Cartwright To: Jerry Bartachek Cc: Low Power Amateur Radio Discussion Subject: [161251] Re: OHR 500 IF Filter Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Fri, 14 Nov 2003, Jerry Bartachek wrote: > I am finding my OHR 500 that I bought used has a really wide receive Jerry, I've found that the variable filter on my OHR Explorer II goes from too wide to too narrow, making "just right" about mid dial. I don't have schematics for the 500 here, so I'm not sure how it's setup, but it shouldn't be too difficult to splice the EXPII filter into it. It's four xtals, a couple of resistors and varicaps. 'Course you're gonna have to poke a new hole in the case for the bandwidth pot. :) -- Chris Cartwright, Unix Administrator | ccart@phideaux.com -- -- N3XRV ARRL-VE Norcal Zombie #163 | Oxford, PA 19363 FM29as -- -- MDmW #5 NJ-QRP #105 QRP-L #655 NORCAL #1891 FISTS #5028 QRP-ARCI #9271 -- ------------------------------ Date: Fri, 14 Nov 2003 16:42:41 -0500 From: Ed Lawson To: Cc: "Low Power Amateur Radio Discussion" Subject: [161252] Re: OHR 500 IF Filter Message-ID: <20031114164241.65307f6f.k1vp@grizzy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 14 Nov 2003 14:18:07 -0800 "Jerry Bartachek" wrote: > I am finding my OHR 500 that I bought used has a really wide receive > response with the IF filter and the low pass audio filter in the > circuit. (It's wider without the LP filter!) When I get home I can check mine, but something does not sound right...or rather your description makes me think something is wrong with the rig. The LP filter just cuts white noise more or less and the IF filter is rather sharp on mine. Still, I would not call it super sharp by any means and not sharp enough for contests. Still, easy to tune past signals. I would check the wiring and components for starters. Ed Lawson K1VP ------------------------------ Date: Fri, 14 Nov 2003 17:20:40 -0500 From: Lee Mairs To: davetoepfer@yahoo.com, Low Power Amateur Radio Discussion Subject: [161253] Re: swr,watt meter for qrp Message-ID: <02ac01c3aafd$8ccd2bd0$3b6d020a@boomer> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT Steve Weber had a nice digital kit a year or so back. You might find one that somebody has spare. 73 de Lee KM4YY/8 ----- Original Message ----- From: "David Toepfer" To: "Low Power Amateur Radio Discussion" Sent: Friday, November 14, 2003 1:11 PM Subject: Re: swr,watt meter for qrp > --- n3drk wrote: > > I am looking for a qrp swr, wattmeter for my K2. What are some of the most > > accurate that you guys are using? > > These are the best advice I have heard over time: > > non-kit: > > Radio Shack HF SWR/Power Meter ( > http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=21-534 ) > > kit: > > OHR WM-2 ( http://www.ohr.com/wattmeter.htm ) > > NoGA QRP NoGaWaTT ( http://www.nogaqrp.org/projects/NOGAwatt/kitinfo.html ) > > as yet unavailable: > > Elecraft has promised one is in the works, so I am watching their products page > ( http://elecraft.com/elecraft_products_page.htm ), but nothing yet > > ------------------------------ Date: Fri, 14 Nov 2003 16:45:52 -0600 From: George Fremin III To: qrp-l@lehigh.edu Subject: [161254] Searchable QRP-L archives was Re: O'scope info Message-ID: <20031114224552.GA25135@kkn.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > Paul Harden, NA5N > ----------------- > > Paul's NA5N's "Oscilloscope Primer", 4 parts, I found it here: > > http://qrp.kd4ab.org/1999/991206/0031.html (part 1) > http://qrp.kd4ab.org/1999/991206/0032.html (part 2) > http://qrp.kd4ab.org/1999/991206/0033.html (part 3) > http://qrp.kd4ab.org/1999/991206/0034.html (part 4) I did not know these QRP-L archives exisited. But I see the search does not seem to work. A few months ago I was looking for some searchable QRP-L archives and since they did not seem to exist I created them from all of the old archived list messages. You can find them here: http://www.kkn.net/archives//html/QRP-L/ This archive is updated every hour. The search seems to work well and it quite fast. The four NA5N Oscilloscope posts are here: http://www.kkn.net/archives//html/QRP-L/1999-12/msg00370.html http://www.kkn.net/archives//html/QRP-L/1999-12/msg00371.html http://www.kkn.net/archives//html/QRP-L/1999-12/msg00372.html http://www.kkn.net/archives//html/QRP-L/1999-12/msg00373.html -- George Fremin III - K5TR geoiii@kkn.net http://www.kkn.net/~k5tr ------------------------------ Date: Fri, 14 Nov 2003 17:56:48 -0500 From: "Earl Andrews" To: qrp-l@lehigh.edu Subject: [161255] how to add 160 mtrs to G5RV or 88 ft balanced antenna(or dipole) Message-ID: <200311141756480520.0030EE7E@mondenet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable I think a good way to do this..and keep the space requirements to a= reasonable size ..and not upset the antenna efficiency on the lower bands..would be to add a large (choke= inductor) at each end of the antenna ..say..120 uh ..which is what the alpha delta half sloper uses in its 1/4= wave half sloper. 120 uh is big enough to isolate 40 mtrs and up. On 160 ..it would be a big= loading coil. An end piece after the coil of say20 ft (would have to be= determined experimentally and depends on the coil size). I have the half sloper from alpha delta. (It works pretty good on 160 by= the way) even on a short tower. I may post a file about this on my EarlsHamradio (www.yahoogroups.com). The= half sloper(with coil) has a pretty broad swr curve. It may be a (bit lossy)..but when i had it up= here..I made a contact with my QRPplus rig (5 watt) and the fellow on the= other end...said I must have a pretty good antenna. He was impressed with= my sig. 73 Earl Ve3ab ------------------------------ End of QRP-L Digest 3104 ************************ --------------------------------