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Total 5 documents matching your query.

1. [Amps] 3CX800 grid collet or SK1900 (score: 1): Author: Conrad PA5Y <g0ruz@g0ruz.com>; Date: Mon, 15 Jun 2015 14:09:20 +0200; I have a grounded grid 3CX800 2m amplifier that needs some TLC. One of the most alarming things is that the grid is grounded by 4 small pieces of fingerstock that has seen better days. I thought that; /archives//html/Amps/2015-06/msg00027.html (7,286 bytes)
2. Re: [Amps] 3CX800 grid collet or SK1900 (score: 1): Author: Gerald Williamson via Amps <amps@contesting.com>; Date: Mon, 15 Jun 2015 08:40:01 -0400; Hi Conrad, the four finger grid grounding may be there for the purpose of neutralizing the plate to cathode feedback path. Sort of like you may have seen individual fingers removed from fingerstock t; /archives//html/Amps/2015-06/msg00028.html (7,743 bytes)
3. Re: [Amps] 3CX800 grid collet or SK1900 (score: 1): Author: Steve <g8gsq72@gmail.com>; Date: Mon, 15 Jun 2015 16:18:15 +0100; The grid ring on a 3CX800 is the same size as the screen ring on a 4CX250 so you could dismantle a '250 base to get one. I've done neutralising with grid fingers at UHF but not seen it needed at 2m.; /archives//html/Amps/2015-06/msg00029.html (8,546 bytes)
4. Re: [Amps] 3CX800 grid collet or SK1900 (score: 1): Author: Gerald Williamson via Amps <amps@contesting.com>; Date: Mon, 15 Jun 2015 11:41:03 -0400; Hi Steve, you may well be right about grid inductance not being needed at 2m. It could be more for saving some costs. This was the method used in the original Eimac published design by W6PO back in t; /archives//html/Amps/2015-06/msg00030.html (9,822 bytes)
5. Re: [Amps] 3CX800 grid collet or SK1900 (score: 1): Author: "Dick Hanson" <dick@dkhanson.com>; Date: Mon, 15 Jun 2015 10:50:14 -0500; Guys... I know in the Commander 2m single 3CX800 amps, the grid collets used had a full complement of 'teeth'. In other words, there were many contacts all around the collet. Same deal for the K1FO (; /archives//html/Amps/2015-06/msg00031.html (10,256 bytes)

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