Brian Hill wrote:
"coustanis" wrote in message
oups.com...

....and what does it sound like?
I used to think it was a type of radio but since reading this group
I see it is a sound.

Thanks,
C-



Basically, it's when your radio receives radio waves they travel through the
tuned circuits of the RF deck or front end and depending how you have the
dial set a specific frequency will emerge and travel into the mixer section
of your radio and combine with the locally generated frequency to produce a
new frequency that is more stable and it is equal to the sum or difference
of the two. Simply to combine two frequencies to create a new frequency. The
superhetrodyne is the basis for all modern receiver designs and uses this
technique.


Out of the mixer (sometimes referred to as the converter or 1st
detector) will be four frequencies. The fundemental frequency the set is
tuned to, the local oscillator frequency, and the sum and difference of
the two.