- Aug 6, 2010
Does anyone know if it's possible to tune an old Sonar receiver by ear? Specifically I would like to tune the coils for a center frequency of about 154 MHz. without sending it to a radio shop.
A common problem and one that will result in breakage. You might try some light penetrating oil. Just a tiny bit. Netting the crystals on channel and zeroing the discriminator are probably the only tuning required.Yes, please send it if you can. Also, I did notice that one of the coils is stiff. Do you know of any way to make it turn any easier? I don't want to ruin it because of it's age. Thanks!