10-26-2019, 05:41 PM
I've just finished re-capping and replacing out-of-spec resistors on an Airline Model 62-425 (Montgomery-Ward). I also replaced the Metal clad resistor (R9,10 and 11) with non-metal resistors.
The radio has good sensitivity and plays just fine above 1000KHz. Below 1000KHz there is a persistent buzz that gets louder the lower the tuned frequency. Stations can be heard in this range but with the buzz.
I've tuned the IF and oscillator circuits and I tried moving wires around looking for anything that affects the buzz to no avail.
I welcome any suggestions on how to proceed.
Thank you
Don
The radio has good sensitivity and plays just fine above 1000KHz. Below 1000KHz there is a persistent buzz that gets louder the lower the tuned frequency. Stations can be heard in this range but with the buzz.
I've tuned the IF and oscillator circuits and I tried moving wires around looking for anything that affects the buzz to no avail.
I welcome any suggestions on how to proceed.
Thank you
Don
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