You can also use the calibrator to adjust all the front-end trimmers, You can probably use the 100KHz calibrator, just tune it in and Or you could even listen for harmonics of 50KHz if your receive can not go that low.Ĭonnecting a generator to pin 2 of V4 should not affect the 50KHz BFO at all. That can tune to 50KHz? My Kenwood can, so you could just hang an antenna wire in close and listenįor 50KHz. If you don't have a generator, do you have a receiver The generator application point is at zero volts from the voltage chart and is capacitively blockedīy C199 and C52, so you don't need a DC block. If you do have a 50KHz signal generator, you can just follow the manual. For instance the R-4C alignment first step is to set the 50KHz BFO. What kind of equipment do you have to work with? I started a new thread to address your concerns.Īlignment of a complex receiver is not that hard.