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1. [AMPS] Checking 3-500z tubes ?? (score: 1): Author: nw9g@netusa1.net (Steve Narducci); Date: Tue, 07 Oct 1997 22:13:27 -0500; Looking at the bottom of my 3-500z, it looks like a pentagon with the "lone pin at the top. It and the 2 pins below it on both sides check with continuity with all three pins. And the 2 pins that are; /archives//html/Amps/1997-10/msg00047.html (6,979 bytes)
2. [AMPS] Checking 3-500z tubes ?? (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 8 Oct 97 05:41:51 -0800; No. To test a 3-500Z, one needs a high-pot. tester. This is how I test them: 1. Gas check. (cold) Apply 8kV (current limited) between the anode and the grid. If there is a blue glow inside the tube,; /archives//html/Amps/1997-10/msg00048.html (8,105 bytes)

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