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Total 7 documents matching your query.

1. [AMPS] Filament voltage/bad advice (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 20 Jun 2001 11:07:34 -0400; Hi Bob, Harmful advice was presented in the Hint&Kinks section of July 2001 QST. One should NEVER *under any circumstance* reduce the filament voltage of a indirectly heated tube below the tube or eq; /archives//html/Amps/2001-06/msg00185.html (10,270 bytes)
2. [AMPS] Filament voltage/bad advice (score: 1): Author: 2@vc.net (2); Date: Wed, 20 Jun 2001 11:25:00 -0700; /\ "NEVER"? For its UHF-rated planar triodes, Eimac states that as operating frequency increases, back-bombardment heating of the oxide cathode increases - so heater V should be reduced below the no; /archives//html/Amps/2001-06/msg00194.html (11,584 bytes)
3. [AMPS] Filament voltage/bad advice (score: 1): Author: 2@vc.net (2); Date: Wed, 20 Jun 2001 12:41:10 -0700; /\ "NEVER"? For its UHF-rated planar triodes, Eimac states that as operating frequency increases, back-bombardment heating of the oxide cathode increases - so heater V should be reduced below the no; /archives//html/Amps/2001-06/msg00196.html (12,225 bytes)
4. [AMPS] Filament voltage/bad advice (score: 1): Author: Jim" <w7ry@earthlink.net (Jim); Date: Wed, 20 Jun 2001 20:34:37 -0700; I was able to increase the final tube life in a UHF television transmitter (channel 63, 717.0 MHz 1000 watts peak output) running the filament at the lowest setting....Just where the power dropped of; /archives//html/Amps/2001-06/msg00211.html (14,449 bytes)
5. [AMPS] Filament voltage/bad advice (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 21 Jun 2001 00:26:03 -0400; Did you run several sample comparisons, or is this just an opinion based on one tube? Doing that with an indirectly heated tube, like an 8877, is a disaster waiting to happen. Reducing voltage on a; /archives//html/Amps/2001-06/msg00213.html (9,203 bytes)
6. [AMPS] Filament voltage/bad advice (score: 1): Author: Jim" <w7ry@earthlink.net (Jim); Date: Wed, 20 Jun 2001 21:39:42 -0700; transmitter the Just one tube. plate True statement....... it makes True.... 73 Jim W7RY -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: am; /archives//html/Amps/2001-06/msg00214.html (9,950 bytes)
7. [AMPS] Filament voltage/bad advice (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 21 Jun 2001 07:35:34 +0100; Is this strictly true IF (and it's a big IF) the emission demands are such that the emission is still space charge limited? I'm thinking here of some equipment I've seen where admittedly receiving tu; /archives//html/Amps/2001-06/msg00218.html (8,176 bytes)

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