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Total 4 documents matching your query.

1. [Amps] Rejuvenating glass power tubes (score: 1): Author: ve7avv at shaw.ca (Paul B. Peters, VE7AVV); Date: Thu Mar 6 20:22:44 2003; I've just acquired an SB-220. The amp has most of the standard modifications -- but the 3-500s have not been in service for some time. While the tubes are known to be good, I'm curious what you think; /archives//html/Amps/2003-03/msg00277.html (7,202 bytes)
2. [Amps] Rejuvenating glass power tubes (score: 1): Author: 2 at vc.net (rlm); Date: Fri Mar 7 05:14:20 2003; Large thoriated-tungsten filament Ceramic tubes can be restored to full emission by re-carburizing the hot filament with acetylene gas (C^2 H^2). The two carbon atoms in the acetylene molecule combi; /archives//html/Amps/2003-03/msg00289.html (8,662 bytes)
3. [Amps] Rejuvenating glass power tubes (score: 1): Author: W0YR at aol.com (W0YR@aol.com); Date: Fri Mar 7 07:29:45 2003; Rich, I have had gassy tubes rid themselves of gas. At first I did not know what that low, rough, intermittent sound was. I didn't know beans about this until I cabbaged onto a book by Henri Le Petom; /archives//html/Amps/2003-03/msg00295.html (6,700 bytes)
4. [Amps] Rejuvenating glass power tubes (score: 1): Author: 2 at vc.net (rlm); Date: Fri Mar 7 09:44:56 2003; Chortle. Tnx. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00298.html (7,166 bytes)

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