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21. [AMPS] Receiver performance (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 15 Mar 2000 07:59:48 +0000; Which "that" are you referring to, Tom - the good low-noise performance of the selective DSP filters, or the ineffectiveness of the DSP noise reduction? 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book; /archives//html/Amps/2000-03/msg00696.html (10,281 bytes)
22. [AMPS] Books (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 18 Mar 2000 22:19:55 +0000; Given that information, try www.bookfinder.com which serves a network of book dealers. Occasional copies of Pappenfus turn up there, and there usually seem to be lots of copies of Terman and the Radi; /archives//html/Amps/2000-03/msg00811.html (9,822 bytes)
23. [AMPS] Hot Switching (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 20 Mar 2000 08:08:43 +0000; That's a good point, Dick - did you measure the 7ms delay in the FT-990 using the transistor remote switching option, or the relay option? Another possibility for the 990 might be to route the key cl; /archives//html/Amps/2000-03/msg00834.html (9,371 bytes)
24. [AMPS] Hot Switching (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 20 Mar 2000 20:21:25 +0000; All transceivers have some break delay, in order to avoid hot-switching their own internal TX/RX systems. My suggestion would not affect the existing break timing - it would only speed up the make s; /archives//html/Amps/2000-03/msg00851.html (8,944 bytes)
25. [AMPS] Hot Switching (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 21 Mar 2000 14:48:07 +0000; OK, so it really is a delay imposed by the rig's T/R controller. What we're trying to do, then, is to bypass the controller's 7ms delay on key-DOWN, but to leave the controller to handle the key-UP e; /archives//html/Amps/2000-03/msg00862.html (10,558 bytes)
26. [AMPS] G2DAF (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 21 Mar 2000 19:12:38 +0000; Oh you already missed all the fun, Ron! And all the fun before that... The original G2DAF article is posted as a PDF on my web site for historical information, at www.ifwtech.com/g3sek/g2daf.htm 73 f; /archives//html/Amps/2000-03/msg00873.html (7,456 bytes)
27. [AMPS] Hi Pot Transformer (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 22 Mar 2000 07:45:12 +0000; Agreed - otherwise you miss some very important information about *when* breakdown begins. I've had very good results with a small laser(?) power supply module which consists of a one-transistor osci; /archives//html/Amps/2000-03/msg00898.html (9,344 bytes)
28. [AMPS] The G2DAF Amplifier; Intents and Purposes (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 26 Mar 2000 20:16:57 +0100; Let G2DAF speak for himself - you can download his original articles from my web site. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.com; /archives//html/Amps/2000-03/msg00959.html (9,943 bytes)
29. [AMPS] 3/2 power law and Rich's very wide signal (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 28 Mar 2000 16:45:36 +0100; Or was that 2 milliseconds? If Mr Thornley were still alive, you'd very quickly regret making that cheap shot. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB; /archives//html/Amps/2000-03/msg01015.html (9,279 bytes)
30. [AMPS] 3/2 power law and Rich's very wide signal (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 29 Mar 2000 15:17:17 +0100; The world clearly needs a standard reference .wav file. Now who shall we nominate? 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.com/g3; /archives//html/Amps/2000-03/msg01054.html (10,450 bytes)
31. [AMPS] Re: Serious debate: Dynamic IMD testing (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 29 Mar 2000 21:21:46 +0100; In fact, there is a serious point behind my suggestion. Devising a test signal that adequately simulates the characteristics of the human voice is extremely difficult - and even when you've done it,; /archives//html/Amps/2000-03/msg01064.html (12,698 bytes)
32. [AMPS] SB-220 meter shunt R problem (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 6 Feb 2000 13:10:48 +0000; Including the diodes (as on Rich's web site)? 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.demon.co.uk/g3sek -- FAQ on WWW: http://www.; /archives//html/Amps/2000-02/msg00082.html (7,400 bytes)
33. SV: [AMPS] Nichrome/Parasitics/ARRL Handbook 2000 (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 8 Feb 2000 07:17:33 +0000; The quick answer is no. It will move the VHF resonance, but a simple inductor does nothing to add extra damping at that frequency compared to HF. To do that, there has to be some loss mechanism in th; /archives//html/Amps/2000-02/msg00117.html (9,532 bytes)
34. SV: [AMPS] Nichrome/Parasitics/ARRL Handbook 2000 (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 8 Feb 2000 22:04:39 +0000; Fair point - my original comment was too sweeping. Surely there always has to be a second resonance, somewhere above the operating frequency. Since the series inductance in the anode lead tunes it, i; /archives//html/Amps/2000-02/msg00135.html (9,818 bytes)
35. [AMPS] Re: Adios (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 10 Feb 2000 08:36:42 +0000; Excuse the bandwidth, but I have to do this, just once... The biggest single source of junk lineage on this list is untrimmed quotes, and especially: 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' '; /archives//html/Amps/2000-02/msg00172.html (9,194 bytes)
36. [AMPS] Re: Adios (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 10 Feb 2000 14:32:12 +0000; You missed something at the end, Peter - you're supposed to say "Harrumph!" 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.demon.co.uk/g3; /archives//html/Amps/2000-02/msg00187.html (8,476 bytes)
37. [AMPS] cabin fever (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 10 Feb 2000 21:02:15 +0000; Sorry, Jerry - it's all my fault for using that B-- word! 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.demon.co.uk/g3sek -- FAQ on WWW:; /archives//html/Amps/2000-02/msg00188.html (7,979 bytes)
38. [AMPS] IMD Question (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 15 Feb 2000 07:43:51 +0000; Credit GW4FRX for that good work. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.demon.co.uk/g3sek -- FAQ on WWW: http://www.contesting.c; /archives//html/Amps/2000-02/msg00251.html (8,829 bytes)
39. [AMPS] RE: ALC (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 16 Feb 2000 22:00:41 +0000; In simpler days with simpler rigs, a neat trick was to disconnect the front-panel mic gain control and to preset the mic gain internally. The other essential part of the plot was to pretend that the; /archives//html/Amps/2000-02/msg00295.html (9,190 bytes)
40. [AMPS] Diodes (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 22 Feb 2000 19:42:44 +0000; This is another of those recurring FUQs (Frequently Unanswered Questions - what else?). When it came around about two years ago, I checked direct with the author of the revised Handbook chapter (a po; /archives//html/Amps/2000-02/msg00505.html (11,564 bytes)

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