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Total 6 documents matching your query.

1. [Amps] SB-200 Amp with 811 tubes? (score: 1): Author: D Conklin <dconklin@neo.rr.com>; Date: Mon, 23 Jan 2006 18:36:38 -0500; Gurus, Amp rookie here. I got a SB-200 fitted with 2 811A tubes. I was assuming that this was a plug-and-play replacement for the 572A. A local ham who has an extensive but not detailed memory indica; /archives//html/Amps/2006-01/msg00553.html (7,468 bytes)
2. Re: [Amps] SB-200 Amp with 811 tubes? (score: 1): Author: "carl s." <carlseye@tampabay.rr.com>; Date: Mon, 23 Jan 2006 18:22:15 -0500; The SB200 *could* be used with 811A's IF you could find a way to reduce the hi-voltage to about 1800 (Max). But this is unlikely due to the SB200's transformer being one for the hi-v and the fil. vol; /archives//html/Amps/2006-01/msg00555.html (9,618 bytes)
3. Re: [Amps] SB-200 Amp with 811 tubes? (score: 1): Author: Steve Katz <stevek@jmr.com>; Date: Mon, 23 Jan 2006 15:55:38 -0800; Going backwards from 572Bs to 811As is an unusual conversion because it results in less power. It's also unusual in that the 811A has a lower plate voltage rating, so the HV power supply would requir; /archives//html/Amps/2006-01/msg00556.html (8,782 bytes)
4. Re: [Amps] SB-200 Amp with 811 tubes? (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Mon, 23 Jan 2006 16:45:09 -0800; This is like putting bicycle tires on a Corvette, because the normal tires are too expensive. They can work if you are very careful - but not very well Colin K7FM ___________________________________; /archives//html/Amps/2006-01/msg00559.html (7,569 bytes)
5. Re: [Amps] SB-200 Amp with 811 tubes? (score: 1): Author: "Joe Subich, W4TV" <k4ik@subich.com>; Date: Mon, 23 Jan 2006 21:17:31 -0500; If you're lucky the only changes made were to change the power supply from a voltage doubler to a half-wave rectifier. Without that change, the 811 (rated for operation at about 1250 volts) would ar; /archives//html/Amps/2006-01/msg00569.html (9,609 bytes)
6. Re: [Amps] SB-200 Amp with 811 tubes? (score: 1): Author: Gudguyham@aol.com; Date: Tue, 24 Jan 2006 08:14:35 EST; IMHO putting 811's in an Sb-200 is like putting a 4 cyl. engine in a Corvette. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailma; /archives//html/Amps/2006-01/msg00577.html (7,485 bytes)

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