candy rosa wrote:

Could someone try to explain to me -- very succintly -- what exactly
an oscillator does in a radio??

m II wrote:

The oscillator makes a frequency which can be subtracted from the
received signal.

OR added...it works either way.

That's how they free the sound wave from the radio
frequency carrier.

Uh, Mike, I thought -that- function was done by the -detector- stage,
not the oscillator.