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81. [AMPS] BeO Cautions (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 20 Dec 1999 13:35:19 +0000; Pure beryllia is white, and the pink colour is not related to beryllia - see the FAQ page at www.svetlana.com 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB); /archives//html/Amps/1999-12/msg00272.html (8,443 bytes)
82. [AMPS] BeO Cautions (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 20 Dec 1999 17:22:23 +0000; No, but it doesn't have to be pink either. All I'm saying is that it's not correct to assume that any ceramic contains beryllia just because it's pink. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'; /archives//html/Amps/1999-12/msg00286.html (9,286 bytes)
83. SV: [AMPS] More and More and More and More - drive derived screen potential (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 21 Dec 1999 00:42:35 +0000; Only what G2DAF himself wrote (copy posted on my web site). All the rest has come from other people, and G2DAF is not around to pass comment. Actually, that's probably just as well for some people, b; /archives//html/Amps/1999-12/msg00304.html (10,998 bytes)
84. [AMPS] BeO Cautions (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 21 Dec 1999 09:24:09 +0000; That isn't what I said at all! I said that the pink colour has NO CONNECTION with any beryllia content, so the colour is totally useless as an indication. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Bo; /archives//html/Amps/1999-12/msg00318.html (9,595 bytes)
85. SV: [AMPS] More and More and More and More - drive derived screen potential (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 21 Dec 1999 16:55:50 +0000; Then your guess would have been wrong - which is not surprising since you never met him personally, or talked to or even heard him on the air. However... putting on my best Viennese accent and lighti; /archives//html/Amps/1999-12/msg00328.html (9,923 bytes)
86. [AMPS] 2 TONE TESTS OF G2DAF CIRCUIT (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 23 Dec 1999 08:14:12 +0000; "Too much grid current" seems to be a minor (or minority) aspect of the doubts about the G2DAF. The major doubt is the varying screen voltage, leading to gain that varies with drive level. It would b; /archives//html/Amps/1999-12/msg00358.html (9,222 bytes)
87. [AMPS] GS35b horizontal mount (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 23 Dec 1999 16:45:01 +0000; Electrically, the tube is happy to operate horizontal. The only slight difficulty is that the weight of the big copper anode cooler tends to pull the tube out of an ordinary finger-stock socket. You; /archives//html/Amps/1999-12/msg00370.html (8,173 bytes)
88. [AMPS] Re: Hypothesis of the G2DAF amplifier operation (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 27 Dec 1999 21:47:58 +0000; Thanks for the thorough information, Colin. Still processing here... The QY3-125 that G2DAF used is the same as a 4-125. The operating conditions in "G2DAF mode" are given in the scanned pages on my; /archives//html/Amps/1999-12/msg00393.html (8,129 bytes)
89. [AMPS] daf amplifier circuit, on air testing... (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 31 Dec 1999 11:05:38 +0000; One more time... there has only ever been *ONE* G2DAF circuit. Only one was ever published, and a scanned copy is on my web site. All the others - including Norm's circuits - are NOT G2DAF amps. They; /archives//html/Amps/1999-12/msg00447.html (8,986 bytes)
90. [AMPS] Italians and power? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 1 Nov 1999 07:48:58 +0000; He's probably running a lot of power, but power alone cannot account for the difference. Let's think about this: he's 20dB over S9 with you, and the antennas and propagation work the same both ways.; /archives//html/Amps/1999-11/msg00022.html (9,042 bytes)
91. [AMPS] K2RIW 432 Mhz Stripline Amplifier (Dec 72 QST) (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 1 Nov 1999 07:34:41 +0000; There's extensive information on the K2RIW, and on 4CX250B PAs and power supplies in general, in 'The VHF/UHF DX Book'. It's available from ARRL via links from my web site. 73 from Ian G3SEK Editor,; /archives//html/Amps/1999-11/msg00023.html (8,490 bytes)
92. [AMPS] For Sale - Metalwork for YL1050/GS23b 432MHz stripline amplifier (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White); Date: Mon, 1 Nov 1999 22:08:58 +0000; Metalwork for abandoned project needs a good home! Photos at http://www.ifwtech.demon.co.uk/g3sek/metalwork.htm * Complete enclosure made from sectional panels, with top and bottom covers (captive nu; /archives//html/Amps/1999-11/msg00042.html (8,271 bytes)
93. [AMPS] rheostat/autotransformers (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 5 Nov 1999 19:25:33 +0000; [lots of interesting stuff, as usual...] ... Didn't know you could do that. Do you have to take any special precautions to make sure they are sharing the load equally? Coming back down to amateur siz; /archives//html/Amps/1999-11/msg00173.html (8,738 bytes)
94. [AMPS] WTB large coax relay (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 5 Nov 1999 19:32:31 +0000; It may be worth asking on AMPS... you never know your luck... Looking for a coax relay capable of carrying 1.5kW on 432, with very good isolation (>= 60dB, so it must have shorting contacts) and conn; /archives//html/Amps/1999-11/msg00174.html (7,126 bytes)
95. [AMPS] AC Line side regulator.. (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 6 Nov 1999 22:52:56 +0000; Well remembered! AA5C, QST May 1987, p.23-25. Also lots of transient-induced stress on the transformer core, windings and insulation - every single cycle. The other article in VHF Comms / UKW Bericht; /archives//html/Amps/1999-11/msg00194.html (9,849 bytes)
96. [AMPS] sb 220 update that was bounced the first time sent in... (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 11 Nov 1999 11:23:58 +0000; Highly recommended - together with the surge limiting resistor ("glitch resistor") in the HV supply, between point J and the shorting switch. To protect your valuable meters, invest in large diodes s; /archives//html/Amps/1999-11/msg00280.html (8,335 bytes)
97. SV: [AMPS] sb 220 update that was bounced the first time sent in. .. (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 11 Nov 1999 17:41:04 +0000; wrote: I hope you don't mean in series, because that makes the protection LESS. Connecting multiple small diodes in parallel is probably OK, but not as good as one large diode that you *know* will su; /archives//html/Amps/1999-11/msg00293.html (8,166 bytes)
98. [AMPS] Eimac care and feeding (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 16 Nov 1999 22:16:16 +0000; They certainly lost many potential volunteers, because: 1. The project seems to be restricted to updating within the existing chapter structure. After more than 30 years of change since the first edi; /archives//html/Amps/1999-11/msg00357.html (9,459 bytes)
99. [AMPS] Eimac care and feeding/poor service (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 18 Nov 1999 08:06:31 +0000; I agree, and have had similar good service from Eimac (and Reid Brandon in particular) in response to individual inquiries. I don't want my criticisms of the Care & Feeding project to be used by othe; /archives//html/Amps/1999-11/msg00381.html (8,651 bytes)
100. [AMPS] Eimac care and feeding (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 20 Nov 1999 20:15:06 +0000; [snip, about minor errors] ...and: * There's not enough information about linear operation. * There's not enough information about operation above 30MHz. * It doesn't mention more modern tubes - even; /archives//html/Amps/1999-11/msg00419.html (9,115 bytes)

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