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1. [Amps] Heathkit modified for six meters (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Wed Jul 9 08:34:47 2003; Phooey. An SB-1000 or an SB-220 makes a great 6m amp for way less money than it would cost to "have someone make you a good 6 meter amp." And there's nothing rare about these Heath amps, you can pick; /archives//html/Amps/2003-07/msg00054.html (7,967 bytes)
2. [Amps] QSk with SB-200 (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Tue Jul 22 08:17:37 2003; Adam, If you'll do a search of the AMPS reflector archives you'll find: http://lists.contesting.com/_amps/2003-March/034511.html which should answer your question. Start by reading the info on AG6K's; /archives//html/Amps/2003-07/msg00118.html (7,784 bytes)
3. [Amps] Re: (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Thu Apr 10 19:41:09 2003; Is it possible that your transceiver is overshooting on key down? Many transceivers will briefly put out 100w or more for a short period of time even when the power level is turned down. 73, Doug, K4; /archives//html/Amps/2003-04/msg00110.html (8,582 bytes)
4. [Amps] QRO Balun? (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Tue Apr 15 16:22:49 2003; I may be oversimplifying here, but maybe it's unnecessary to go to all this trouble. The figure mentioned was 1 dB of loss at 1500W, which amounts to around 300W by my calculations. 1. Can the balun; /archives//html/Amps/2003-04/msg00160.html (7,710 bytes)
5. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Tue Mar 4 14:56:27 2003; I've also found the comments on IMD interesting. A couple of months ago I had the opportunity to measure the HF TX IMD on a TS-2000 for myself, and I found the results to be in line with most of the; /archives//html/Amps/2003-03/msg00120.html (12,260 bytes)
6. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Wed Mar 5 10:07:31 2003; I've actually found the overshoot problem to be worse when my rigs are operated at lower power levels. Here is what I measured using a 2Gs/sec digital scope on 3.5 MHz: my Icom IC-706Mk2G, one of th; /archives//html/Amps/2003-03/msg00172.html (9,844 bytes)
7. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Wed Mar 5 13:17:26 2003; Riley has a job with the FCC. And Riley doesn't play tape loops or use 10KW to get his point across. 73, Doug, K4DSP; /archives//html/Amps/2003-03/msg00197.html (8,966 bytes)
8. [Amps] Electronic Relay Use In RF Applications (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Wed Mar 5 22:00:03 2003; These are usually designed to switch 60 Hz loads. They don't look like relays at RF. They generally have a fair amount of input/output capacitance. I have a whole box of 'em too. 73, Doug, K4DSP; /archives//html/Amps/2003-03/msg00225.html (7,566 bytes)
9. [Amps] Found 8874, now need chimney (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Wed Mar 12 12:55:07 2003; Thanks, all! Suitable chimney material has been located. 73, Doug, K4DSP; /archives//html/Amps/2003-03/msg00481.html (6,716 bytes)
10. [Amps] SB-200 Question (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Mon Mar 17 10:27:40 2003; Agreed. Before I got the SB-220 I owned an SB-200. I looked at AG6K's QSK mod for the SB-220 and modified the SB-200 to use it. With the Matsushita relay for input switching and the Jennings RJ-1A f; /archives//html/Amps/2003-03/msg00627.html (8,190 bytes)
11. [Amps] Re: Voodoo "EMF' forces from grid current pulses (score: 208): Author: doug at nc.rr.com (Doug Hall); Date: Fri Feb 7 09:51:55 2003; "Accepted aeronautical engineering" never said this. It has been passed around sufficiently so as to become an "urban legend." See: http://www.sciencenews.org/sn_arc97/3_29_97/mathland.htm and http:/; /archives//html/Amps/2003-02/msg00149.html (9,442 bytes)

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