Hi Gang, I have a nice TR-3 that looks, and works well with one caveat. I can't get the S Meter to deflect past S2. So far I have swapped all the tubes involved??? Removed the meter, and it tests OK, so far, I haven't found any resistors out of spec. Tried changing the value of the shunt resistor, which is connected to the zeroing pot. Not much help there. I don't see much change in the voltage at either the receive IF, or the transmit IF. I understand that the TR-4 has a meter sensitivity pot, whereas the TR-3 has only the zero pot. Does anyone have any other ideas? Thanks for reading this Tom, WD8JPP
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