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[Amps] Alpha Ip problem

To: "amps" <amps@contesting.com>
Subject: [Amps] Alpha Ip problem
From: "Robert Kirkland" <alpha76@triton.net>
Date: Mon, 4 Aug 2008 22:16:26 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
The Alpha 76 indicates plate current by converting an 0-1 ma. old 1000 ohm 
iron vane meter to a volt meter and measuring the voltage drop through a 
series resistor. The volt meter circuit has an adjustable pot. You would 
think it could be calibrated, power off, with an ohm meter and work ok, 
1ma=1000 ohms per volt. It didn't work, does anyone know how this circuit is 
calibrated or how ETO set it up. I can make it work but would like to 
restore it properly, tnx.
Bob, w5pvr
 

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