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1. [Amps] "Pi" or "Tee" input circuit for a 50Mhz (score: 1): Author: "TL_IARC" <4z4tl@iarc.org>; Date: Fri, 19 Mar 2010 19:48:12 +0200; Hello all Trying to decide between a "Pi" and a "Tee" input circuit, for a 50Mhz single 3-400Z amp. (formerly AL-80A with 3-400Z reploaced). Any thoughts please? Thanks in advance, Isaac, 4Z4TL _____; /archives//html/Amps/2010-03/msg00449.html (7,195 bytes)
2. Re: [Amps] "Pi" or "Tee" input circuit for a 50Mhz (score: 1): Author: TexasRF@aol.com; Date: Sun, 21 Mar 2010 19:42:01 EDT; Isaac, considering the amount of capacitance from cathode to grid, it is pretty hard to actually make a T circuit. You might as well use the capacitance as part of a pi net and have all of the advant; /archives//html/Amps/2010-03/msg00451.html (7,336 bytes)
3. Re: [Amps] "Pi" or "Tee" input circuit for a 50Mhz (score: 1): Author: "David H Craig" <davidhcraig@verizon.net>; Date: Sun, 21 Mar 2010 21:19:31 -0400; After trying the "T" based on published designs, I hate it. My 2nd HB 50 MHz amp, with a Pi using front-panel adjustment shafts, is completely flat even though I used the wrong tube Z in computing th; /archives//html/Amps/2010-03/msg00454.html (9,355 bytes)

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