Home Forums Members’ Hangout Mystery buzz on my AA5 radio(s) Reply To: Mystery buzz on my AA5 radio(s)

Doug Parker
CVRS Member

The foreign sourced battery charger may have an unshielded switching power supply to eliminated the expensive iron core transformer in the input power to the charger. An unshielded switching power supply is just a small radio station to an am radio. The old transformer based tube radios have a great ability to shield spikes from the power line where the AA5 B+ is tied to both sides of the AC line. They leave a sign at the door that all power line interference is welcome!