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1. [Amps] Manual tuned inputs (score: 1): Author: "Jim Thomson" <Jim.thom@telus.net>; Date: Fri, 9 Apr 2010 05:58:35 -0700; I think Larry, W7IUV remarked about not liking manually tuned.. tuned inputs.... as having to have yet one more thing to tweak, when changing bands etc. Using BOTH hands, it takes 45-50 seconds to sw; /archives//html/Amps/2010-04/msg00305.html (10,688 bytes)
2. Re: [Amps] Manual tuned inputs (score: 1): Author: K8MLM@aol.com; Date: Fri, 9 Apr 2010 10:15:20 EDT; I built my 4-1000 amp with a manual input. Pi network used a 4uh variable inductor and fixed switched input and output caps for each band. Adjusted the 10m position with the cap right at the base of; /archives//html/Amps/2010-04/msg00312.html (11,663 bytes)
3. Re: [Amps] Manual tuned inputs (score: 1): Author: "Bill, W6WRT" <dezrat1242@yahoo.com>; Date: Fri, 09 Apr 2010 09:28:58 -0700; ORIGINAL MESSAGE: REPLY: I agree, building 9 tuned inputs is a drag, but with some tubes (8877, pair of 3-500z) you don't need a pi-network input, which simplifies things considerably.Their input imp; /archives//html/Amps/2010-04/msg00315.html (7,950 bytes)
4. Re: [Amps] Manual tuned inputs (score: 1): Author: Dave White <mausoptik@btinternet.com>; Date: Fri, 9 Apr 2010 17:41:44 +0100; Hi Bob Out of interest what output do you get from the 4-1000 and with what drive/ HT? What grid and plate current does the tube use at full output? Cheers Dave G0OIL I built my 4-1000 amp with a man; /archives//html/Amps/2010-04/msg00318.html (7,570 bytes)

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