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Total 4 documents matching your query.

1. [Amps] Checking SB-220 meter continuity (score: 1): Author: Steve London <n2icarrl@gmail.com>; Date: Tue, 26 May 2020 09:02:23 -0600; The plate current meter in my SB-220 has gone flaky. R1, R2, R3 and the zener diode are fine. Sometimes, I can tap on the meter and it will come to life. Using something like a Fluke 87, what should; /archives//html/Amps/2020-05/msg00045.html (6,709 bytes)
2. Re: [Amps] Checking SB-220 meter continuity (score: 1): Author: Jim <jimw7ry@gmail.com>; Date: Tue, 26 May 2020 12:12:00 -0500; Its most likely mechanical. Corrosion builds up between the washers on the studs of meter. Both on the inside and outside. I've also hears of instances where it can be the meter movement itslef with; /archives//html/Amps/2020-05/msg00046.html (8,182 bytes)
3. Re: [Amps] Checking SB-220 meter continuity (score: 1): Author: donroden@hiwaay.net; Date: Tue, 26 May 2020 12:25:53 -0500; Put a "D" cell ( 1.5volts ) in series with a 2 ohm resistor and a digital ammeter ( Fluke or whatever set to measure current ) between the minus HV and Chassis. Compare readings. Don W4DNR Its most l; /archives//html/Amps/2020-05/msg00047.html (8,513 bytes)
4. Re: [Amps] Checking SB-220 meter continuity (score: 1): Author: Steve London <n2icarrl@gmail.com>; Date: Wed, 27 May 2020 11:21:01 -0600; Thanks, everyone. The problem ended up being loose brass nuts on the meter. The meter resistance is around 1400 ohms, normally. 73, Steve, N2IC _______________________________________________ Amps ma; /archives//html/Amps/2020-05/msg00048.html (7,220 bytes)

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