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1. [AMPS] AL-1200 problem (self-oscillation?) (score: 1): Author: jjreisert@alum.mit.edu (Jim Reisert AD1C); Date: Sun, 14 Dec 1997 15:22:26 -0500; I'm having a new problem with my new AL-1200. The tube seems to go into some sort of self-oscillation, even if you just turn the power on. It makes some sort of clicky noise on 10M (as if it were arc; /archives//html/Amps/1997-12/msg00288.html (7,588 bytes)
2. [AMPS] AL-1200 problem (self-oscillation?) (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 15 Dec 97 02:57:43 -0800; [Twilight Zone theme] Do you see anything unusual going on with the grid current, Jim? - 3cx1200a7s have about 7 times as much feedback C as an 8877, so they are not easy to tame. Rich.... R. L. Mea; /archives//html/Amps/1997-12/msg00294.html (7,700 bytes)

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