"Scott" wrote in message
...
raypsi wrote:
Hey OM:

The only way to make that work is with a converter.
Back in the day before police scanners, I made a converter that
converted the 70cm police band down to the AM broadcast band. 530Khz
thru 1600Khz was the band back then. My converter could put 3 local
police frequencies on the AM band.
All the converter is is an LO, input tank circuit, and a mixer. The
only active component was the LO. I used a CB rock which were dirt
cheap. Caught the 70cm harmonic into the mixer, getting the police
band down to the AM band.




How did that work? Wasn't the police band using FM back then like they do
today? I suppose the RF signal may have had enough "AM" component
perhaps?


It is easy to detect FM on an AM radio by using slope detection. Not the
best way, but it works.

http://www.tpub.com/neets/book12/51c.htm