Hi Marty,
Yes, those things could certainly pick up low level rf energy. But as I explained above it seems very unlikely that pickup on the speaker wires could result in audible sound. And the rca inputs presumably wouldn't have been able to pick up anything significant when you had the shorting plugs on them.
And as I said, it is very difficult to imagine how an fm signal could be decoded into intelligible audio by anything that is not specifically designed for that purpose. Perhaps it is really being caused by a more distant am station.
Regards,
-- Al
Yes, those things could certainly pick up low level rf energy. But as I explained above it seems very unlikely that pickup on the speaker wires could result in audible sound. And the rca inputs presumably wouldn't have been able to pick up anything significant when you had the shorting plugs on them.
And as I said, it is very difficult to imagine how an fm signal could be decoded into intelligible audio by anything that is not specifically designed for that purpose. Perhaps it is really being caused by a more distant am station.
Regards,
-- Al