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21. Topband: Chokes - ferrite vs air (score: 1): Author: n0tt1@juno.com (n0tt1@juno.com); Date: Mon, 18 Jun 2001 03:32:18 +0100; Hi Gary, While doing some reading in ON4UN's latest book I ran across some info about "air core" chokes....page 7.20, last paragraph of section 9.2 regarding isolating feedlines with various kinds of; /archives//html/Topband/2001-06/msg00044.html (7,428 bytes)
22. Topband: Beverages, Lightning and Moose (score: 1): Author: n0tt1@juno.com (n0tt1@juno.com); Date: Wed, 16 May 2001 01:55:46 +0100; Hi Roger, My setup isn't as advanced as yours, but I too had induced lightning problems. What I did several years ago is this: At in input I placed an ordinary NE-2 neon bulb from the lead to ground.; /archives//html/Topband/2001-05/msg00032.html (7,946 bytes)
23. Topband: Common mode filters...help (score: 1): Author: n0tt1@juno.com (n0tt1@juno.com); Date: Tue, 22 May 2001 02:36:25 +0100; Hi Steve, You got it right....it's nothing more than a good RF choke on the shield to help prevent the "snake" antenna effect. You can indeed use a "large" hi-u ferrite core in place of the beads. As; /archives//html/Topband/2001-05/msg00038.html (7,826 bytes)
24. Topband: mounting ladder line (score: 1): Author: n0tt1@juno.com (n0tt1@juno.com); Date: Mon, 28 May 2001 17:47:59 +0100; Hi Howard, One could simply cut a slot at the top end of the pvc pipe and then drill a small hole completely through the pipe at a 90 degree angle to the slot, just large enough to accept a short pie; /archives//html/Topband/2001-05/msg00077.html (7,739 bytes)
25. Topband: Where's New England? (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Sun, 3 Dec 2000 21:42:17 +0000; Ford, Bad prop to both coasts this year!!! Was lucky to make the Q's I did!...BTW, worked only the VE3 section in Canada....nothing else heard from there. 73/DX Charlie, N0TT/QRP -- FAQ on WWW: http:; /archives//html/Topband/2000-12/msg00016.html (7,734 bytes)
26. Topband: WIDEBAND NOISE (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Wed, 27 Dec 2000 03:19:32 +0000; Very interesting and how true! I recently purchased a new ("Vornado" brand, I think) electric heater for the shack...plugged it in and noticed immediately that images the computer screen had the jitt; /archives//html/Topband/2000-12/msg00149.html (7,214 bytes)
27. Topband: Wideband Noise on 160 (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Wed, 27 Dec 2000 04:13:28 +0000; Season's Greetings to all! I have heard that corona discharge is audible at a some ultrasonic frequencies. If this is true, does anybody know what range or specific frequency? 73, Charlie, N0TT -- FA; /archives//html/Topband/2000-12/msg00151.html (7,601 bytes)
28. Topband: Finding break in Beverage wire (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Sun, 31 Dec 2000 21:35:38 +0000; Hi Barry, I'm not sure if this trick would work with a wire above ground, but below ground I like to use an ordinary Broadcast AM portable radio...the kind with the built-in loopstick...el-cheapo var; /archives//html/Topband/2000-12/msg00201.html (7,874 bytes)
29. Topband: Ekeing Out QRP QSOs (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Tue, 19 Sep 2000 21:56:39 +0100; Yep, you've got that right! I was able to work WAS in ONE weekend during a 160m contest using only 5 watts to a vertical because the other stations had the SKILL and took the TIME to copy my QRP sig; /archives//html/Topband/2000-09/msg00103.html (7,315 bytes)
30. Topband: to rotate or not to rotate (score: 1): Author: n0tt1@juno.com (N0TT@ juno.com); Date: Wed, 19 Jan 2000 23:50:34 EST; Hi Lane, I have used one of those for years. Ground mounted is just fine. Mine is fixed, but I know someone who uses a rotator and can effectively NULL OUT local 160m signals with it. I have heard th; /archives//html/Topband/2000-01/msg00144.html (7,167 bytes)
31. Topband: The Q (score: 1): Author: n0tt1@juno.com (N0TT@ juno.com); Date: Fri, 21 Jan 2000 22:42:06 EST; Lane, For a high-Q circuit try about 31 turns #28 enamel on TWO, STACKED, FT50-61 Amidon cores. (You may use larger wire.) Use a small "C". The Q will be about 290, as measured with a HP Q meter. Lik; /archives//html/Topband/2000-01/msg00171.html (7,632 bytes)
32. Topband: Re: Telephone cable for radials? (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Wed, 01 Dec 1999 23:44:37 EST; Randy, If you have a lot of time and patience then unbundle the wires from the cable and fan out like wheel spokes around the base of the antenna (assuming vertical ant). Leaving them bundled is like; /archives//html/Topband/1999-12/msg00023.html (7,358 bytes)
33. Topband: "Short" antennas (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Thu, 02 Dec 1999 00:15:35 EST; Paul, A famous ham named Jerry Sevick, W2FMI, wrote a series of articles in QST on SHORT vertical antennas back in the 70's. Included were SIMPLE, homemade test instruments, transmission line transfo; /archives//html/Topband/1999-12/msg00024.html (6,856 bytes)
34. Topband: Beverages (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Fri, 10 Dec 1999 22:57:55 EST; Hi to All.. I did a search on Beverage antennas on the web and found MANY sites that offer Beverage info... One of most interesting to me was an article by Steve Byan of Oak Ridge Radio. He describes; /archives//html/Topband/1999-12/msg00093.html (7,225 bytes)
35. Topband: SP '99...a few QRP highlights (score: 1): Author: n0tt1@juno.com (N0TT@ juno.com); Date: Sun, 19 Dec 1999 18:19:02 EST; Hi Gang, Propagation was just "fair" from this section of the "black hole"..Grid EM29. Heard no EU stations or JAs. Heard KH7R calling CQ at about 1035Z with no takers. Called him with my 4.9 watts a; /archives//html/Topband/1999-12/msg00208.html (7,576 bytes)
36. Topband: Stew Perry TBDC QRV, Logging Programs, and Grounds (score: 1): Author: n0tt1@juno.com (N0TT@ juno.com); Date: Sun, 19 Dec 1999 18:19:01 EST; Very true Tom, but there must be a "standard" way to perform average ground conductance measurements. How else are engineering data like maps and tables going to be published? Interesting subject! 73; /archives//html/Topband/1999-12/msg00209.html (7,523 bytes)
37. Topband: VK9LX (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Mon, 25 Oct 1999 18:28:24 EDT; Thanks George! I DO need LH on 160 since I was one of the ops last year. 160 was "a bust" then...the usual noise and more noise coming from a water pump...Nick said he was going to bring some capacit; /archives//html/Topband/1999-10/msg00154.html (7,455 bytes)
38. Topband: Update VK9LX from N0AH (score: 1): Author: n0tt1@juno.com (Charlie Hansen); Date: Thu, 28 Oct 1999 21:41:30 EDT; Nick is a good guy to have on a DX-Pedition... I swear he can fix just about anything...a great improvisor!!! (BTW, he repairs "real" watches/clocks for a living.) Ebbtide is the best location on the; /archives//html/Topband/1999-10/msg00183.html (6,956 bytes)
39. Re: Topband: Antenna Bridge (score: 1): Author: n0tt1@juno.com; Date: Tue, 4 Nov 2003 16:47:41 +0000; For those who don't have a library of those IRE Proceedings (most of us!) ...one can get probably get a copy of the article for a nominal charge from the fabulous "Linda Hall Technical Library" in K; /archives//html/Topband/2003-11/msg00018.html (7,329 bytes)
40. Re: Topband: Ground Radials (score: 1): Author: n0tt1@juno.com; Date: Wed, 12 Nov 2003 18:33:04 +0000; ON4UN's book has a photo and (I think) plans on building a kind of "sled" that can be pulled along with a lawn tractor or human power (gasp!)....might be worth a look. Chicken wire - even if a bit r; /archives//html/Topband/2003-11/msg00095.html (8,571 bytes)

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