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1. [Amps] longevity of oxide cathode tube (score: 1): Author: jtml at lanl.gov (John T. M. Lyles); Date: Tue Jun 24 08:56:43 2003; A comrade at another national laboratory uses 4CX350A by the dozens. They have 4 driving 4 in a class A high level feedback preamp circuit at 2-4 MHz. And many installations of this setup. This month; /archives//html/Amps/2003-06/msg00197.html (9,371 bytes)
2. [Amps] longevity of oxide cathode tube (score: 1): Author: sm0aom at telia.com (Karl-Arne Markström); Date: Wed Jun 25 09:25:17 2003; Interesting, this description fits in on the 4CX350AC, which is marketed by Svetlana and others as a lower temperature cathode and consequently longer life version of the 4CX350A. I have encountered; /archives//html/Amps/2003-06/msg00211.html (12,368 bytes)
3. [Amps] longevity of oxide cathode tube (score: 1): Author: 2 at dock.net (2); Date: Thu Jun 26 08:14:04 2003; ** I've heard of cases in the 2GHz range where it was found that back-bombardment was such that the heater potential could be removed shortly after nominal RF output was achieved -- i.e., the cathod; /archives//html/Amps/2003-06/msg00213.html (8,273 bytes)
4. [Amps] longevity of oxide cathode tube (score: 1): Author: sm0aom at telia.com (Karl-Arne Markström); Date: Thu Jun 26 08:14:17 2003; If I remember correctly, this was the normal procedure for some cavity magnetrons, as soon as RF pulses were detected at the output a relay turned off the filament current. If I remember correctly, t; /archives//html/Amps/2003-06/msg00215.html (9,386 bytes)

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