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Total 3 documents matching your query.

1. [Amps] Checking 12by7 (score: 1): Author: 4z4tl at iarc.org (TL); Date: Fri Apr 11 11:18:05 2003; Hello all Is there a way to determine if a 12by7 is operative , out-of-circuit (resistance checks) ? Tks in advance, Isaac, 4Z4TL. http://www.iarc.org/~4z4tl/ ernie@netvision.net.il 4z4tl@iarc.org To; /archives//html/Amps/2003-04/msg00116.html (31,055 bytes)
2. [Amps] Checking 12by7 (score: 1): Author: K6KWQ at aol.com (K6KWQ@aol.com); Date: Fri Apr 11 15:23:16 2003; In my many years of vacuum tube service, the only true test is substitution with a known good tube K6KWQ 12 volt radios are for sissies real radios can kill you. QRO? Still can't make it? You need "m; /archives//html/Amps/2003-04/msg00118.html (6,548 bytes)
3. [Amps] Checking 12by7 (score: 1): Author: 2 at vc.net (2); Date: Sat Apr 12 08:47:11 2003; ? Quite true, but a precursory check with a high-potential tester can prevent a tube with a problem from being tried in and damaging the amplifier. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG; /archives//html/Amps/2003-04/msg00121.html (6,781 bytes)

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