[Texasrocker]

Many things can cause weird noises in vintage radios. If you havent changed the filter caps yet, that is most likely the source!!! However, common household items such as modern type florescent-lighting near your radio, TVs that are turned on, microwave ovens, clothes washers ( motors put out RF!!), clothes dryers, AC line "hash" coming into your home ( hence, a neighbor down the street firing up his home arc-welder connected to the same overhead pwr lines), ALL cause static & weird hums in vintage tube radios especially if on or near each other at the same time. If the radio has had a complete "re-cap", check your surroundings , turn off all other electrical appliance devices, and try again. If the radio hasnt had a complete recap, the old "filter caps" are telling you to unplug the radio, and sell it before you take-out a pwr transformer, ( if it has one). Just trying to help. Randal