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km55
Author: Ken Glaza
Date: 01/25/2017
I was referred to you by Klaus. I am looking for the circuit schematic to the power supply and the microphone. I need to replace the batteries that leaked out with the circuit card I will need to build that provides that filament voltage. I would also like to know how to change the impedance as well.  
 
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 km55
Ken Glaza
01/25/2017
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Klaus Heyne
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Ken Glaza
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