Posts: 1,114
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Joined: Feb 2013
City: Irvington, NY
At the top of the volume control is best. This is the detector output after the RC filtering. If you put the DVM probe on the other side of the 2M resistor the meter will load the circuit reducing the AVC voltage to the controlled tube grids.
Sounds like your transmitter is a bit high powered. You may want to disconnect power to the Mosfet output stage to avoid overloading. Remember that you want to keep the input signal to the radio low.
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RE: Model 89 Cathedral - by Mondial - 02-26-2014, 03:35 PM
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