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1. [AMPS] filament decoupling for RF (score: 1): Author: jtml@lanl.gov (John Lyles); Date: Wed, 13 May 1998 22:32:03 -0600; In a grid-driven amplifier, using tetrodes, one bypasses the filament leads for RF, to ground. It is printed in every book I've seen. Some even go into more detail, like the Philips RF Heating book b; /archives//html/Amps/1998-05/msg00219.html (12,269 bytes)
2. [AMPS] filament decoupling for RF (score: 1): Author: measures@vc.net (Rich Measures); Date: Thu, 14 May 98 01:21:19 -0800; If the cathode is not at RF-gnd potential, the resultant feedback decreases amplification. I agree, and the bypasses need to be low Z. multiple groups of several different values in parallel seem to; /archives//html/Amps/1998-05/msg00224.html (14,632 bytes)
3. [AMPS] filament decoupling for RF (score: 1): Author: gdaught6@leland.Stanford.EDU (George T. Daughters); Date: Thu, 14 May 1998 11:08:02 +0008; hi rich et al., not always! it depends on the phase of the feedback that results. in fact, it is very easy to build an oscillator that has the cathode away from (RF) ground! but... rich and i both li; /archives//html/Amps/1998-05/msg00234.html (8,316 bytes)
4. [AMPS] filament decoupling for RF (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Thu, 14 May 1998 21:15:59 EDT; I agree with your comments in general George but with the following caveat. Rich wrote an article many years ago about modifying the NCL-2000 that way. Since I was on the original design team and had; /archives//html/Amps/1998-05/msg00242.html (10,894 bytes)
5. [AMPS] filament decoupling for RF (score: 1): Author: jono@webspun.com (Jon Ogden); Date: Thu, 14 May 98 22:29:17 -0500; I will certainly second that! 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions:; /archives//html/Amps/1998-05/msg00249.html (7,613 bytes)
6. [AMPS] filament decoupling for RF (score: 1): Author: measures@vc.net (Rich Measures); Date: Fri, 15 May 98 03:35:54 -0800; which magazine was this in? The use of cathode feedback R for the 8122 was not Rich's idea. It came from the RCA technical specifications for the 8122. However, if one does not use four low-L resist; /archives//html/Amps/1998-05/msg00255.html (9,170 bytes)
7. [AMPS] filament decoupling for RF (score: 1): Author: w4eto@rmii.com (Richard W. Ehrhorn); Date: Mon, 18 May 1998 15:01:01 -0600; Hi Carl & All... RE: the query in your posting headed as shown at the end of my note, the ALPHA 91B uses modest unbypassed resistance in the cathode lead (12 ohms or so I think) to create a few dB of; /archives//html/Amps/1998-05/msg00326.html (8,703 bytes)

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