"Michael R. Kesti" wrote in message
...
Karl Uppiano wrote:

"Michael R. Kesti" wrote in message
...
mc wrote:

snip

BTW, what ever became of AM stereo?

It is still another proof that one cannot polish a turd.

I disagree with that statement. When I was a broadcast engineer, one of
the
stations I worked for was AM. The entire transmitting system was capable
of
15KHz audio. It sounded just like monophonic FM on the modulation monitor.

Was this station in the USA? What is/was its call sign?

The station was KCID AM in Caldwell, ID. 1490KHz/1KW. I worked there from
1978 to 1986. I don't think it's there anymore. When I took it over, the
studio-transmitter link was 5KHz telephone lines. One of my first projects
was to install a microwave STL which gave us 15KHz bandwidth end-to-end.
Then I spent considerable effort bringing the entire audio chain up to FM
specs. My goal was to pass an FM audio proof of performance on an AM
station, and the management at the time supported this goal. We met this
goal for all of the parameters that were applicable to AM. Noise and
distortion were the most difficult parameters to keep in spec.