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1. [Amps] Balun for Antenna Tuner (score: 1): Author: Garry Drummond <g.drummond@verizon.net>; Date: Thu, 02 Nov 2006 10:21:33 -0500; Hello All, I am new here and apologize if this is the wrong list to post this question. Does anyone know what type of toroid cores, wire size, and winding technique is used in the 1:1 current balun i; /archives//html/Amps/2006-11/msg00035.html (6,516 bytes)
2. Re: [Amps] Balun for Antenna Tuner (score: 1): Author: Garry Drummond <g.drummond@verizon.net>; Date: Tue, 07 Nov 2006 23:03:26 -0500; Many thanks for the help Tom. That answers my question. 73, Garry _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/am; /archives//html/Amps/2006-11/msg00119.html (7,210 bytes)
3. [Amps] Amp Designs (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Tue, 06 Feb 2007 11:06:30 -0500; Good Morning, Is there a list of improvements that the multitude of knowledgeable experts on this reflector feel would benefit the older amps that use 3-500's such as the L-4B and other similar amps; /archives//html/Amps/2007-02/msg00079.html (6,933 bytes)
4. Re: [Amps] Amps Digest, Vol 50, Issue 17 (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Wed, 07 Feb 2007 09:27:21 -0500; Jim, Check out the "heathkitshop.com" website. They have just come out with a new kit with circuit board to replace the caps/diodes/resistors in the L-4/L-7 HV supplies. 73, Garry - WR4R ____________; /archives//html/Amps/2007-02/msg00118.html (26,901 bytes)
5. [Amps] L-4B blade/blower replacement (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Fri, 16 Mar 2007 15:25:35 -0400; Has anyone had to replace the blades or blower assembly in a L-4B? The blade has gotten out of round and slightly rubbing the back of the blade housing. I tried removing the set screw to slide the bl; /archives//html/Amps/2007-03/msg00182.html (6,448 bytes)
6. Re: [Amps] Amps Digest, Vol 51, Issue 41 (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Wed, 21 Mar 2007 16:35:15 -0400; I have an L-4B and L-7. Both have the same HV supply which uses a 2-watt .82 ohm "fuse" resistor in series in the B+ line. I have often wondered why Drake did this rather than use a real fuse though; /archives//html/Amps/2007-03/msg00290.html (8,369 bytes)
7. [Amps] QSK mod for Drake L-7 (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Fri, 27 Apr 2007 14:05:03 -0400; Hello, Has anyone done a QSK mod on a Drake L-7 and if so, do you have any pictures of the modification? Many thanks & 73, Garry - WR4R _______________________________________________ Amps mailing li; /archives//html/Amps/2007-04/msg00343.html (6,348 bytes)
8. [Amps] Resistor Types (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Thu, 21 Jun 2007 11:27:12 -0400; Hello, I am replacing the filter caps in the power supply of an Alpha 78 and will probably replace the resistors as well. There are two paralleled 120K ohm 3-watt resistors across each cap now. Would; /archives//html/Amps/2007-06/msg00108.html (6,267 bytes)
9. [Amps] [Fwd: RE: L7 QSK] (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Thu, 05 Jul 2007 17:29:23 -0400; Hi Garry, I only have some pictures of the external power supply when it was under construction. I chose to go with the external power supply as that allows the 4000 volts under load on the tubes. Th; /archives//html/Amps/2007-07/msg00035.html (16,838 bytes)
10. [Amps] QSK for the SB-220 (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Mon, 02 Jun 2008 13:42:23 -0400; Hello, Does anyone have a copy of the article titled "All solid State QSK for the Heath SB-220" by Phil Clements, K5PC, they could send me? This appeared in the January 1980 issue of QST. Many thanks; /archives//html/Amps/2008-06/msg00005.html (6,339 bytes)
11. [Amps] QSK for SB-220 article (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Tue, 03 Jun 2008 21:56:34 -0400; Thanks to all who responded. I have the article. Many thanks again & 73, Garry - WR4R Does anyone have a copy of the article titled "All solid State QSK for the Heath SB-220" by Phil Clements, K5PC,; /archives//html/Amps/2008-06/msg00010.html (6,403 bytes)
12. [Amps] Ham Radio Magazine article, April 1978 (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Wed, 18 Jun 2008 11:36:03 -0400; Good Morning, Does anyone have a copy of an article that appeared in Ham Radio magazine, April 1978 issue by Dick Frey, K4XU, which described a QSK/EBS circuit for linear amplifiers? Many thanks & 73; /archives//html/Amps/2008-06/msg00135.html (6,408 bytes)
13. [Amps] Ham Radio Magazine article, April 1978 (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Wed, 18 Jun 2008 15:42:38 -0400; Many thanks to all who responded to this call for help. I have a copy of the article. It is a great feeling to see the quick response when a call goes out for help in the ham community, which seems a; /archives//html/Amps/2008-06/msg00138.html (6,889 bytes)
14. [Amps] Tony King - W4ZT (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Sat, 14 Feb 2009 11:13:49 -0500; I first came to know Tony through a google search of K5TYP, the amateur radio club station at Keelser Air Force Base, Biloxi, MS. Tony had been stationed there as an instructor back in the mid to lat; /archives//html/Amps/2009-02/msg00448.html (6,724 bytes)

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