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Teaberry Model T 40 Channel CB Base Station

I would be tempted to short across the "S-Meter" terminals of the switch temporarily to see if that improved the reading. There is only a very tiny current through the switch and any small disruption could create your problem. The meter is a 500uA meter and it should be capable of measuring a voltage as low as 2 microvolts.

73
David
 
Dmans said:
I would be tempted to short across the "S-Meter" terminals of the switch temporarily to see if that improved the reading. There is only a very tiny current through the switch and any small disruption could create your problem. The meter is a 500uA meter and it should be capable of measuring a voltage as low as 2 microvolts.

73
David
Click to expand...
The is a fried ceramic cap near the D1 diode that I need to change when the parts come in, I wonder if that would affect the meter? Dan
 
danmcclain said:
I've been working on this cb radio for awhile now. Replaced all the electrolytic capacitors, all the tubes are good. The problem I'm having is when I turn it on, and once it heats up, the signal meter slowly moves down to zero and stays there. I've been told it could be a resistor problem. My next move is to replace all the red resistors (flameproof). Is there any other area that I should check? The receive is fine, by the way.

Thanks, Dan
Click to expand...
sounds like a signal rectifier also..
 

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