[BC] FM Stereo invention

[Robert Meuser]

Bob Tarsio wrote:

> Dave:
>
> It's funny how we all get hung up on specs when in fact the AM stereo
> separation specifications were more forgiving than the FM standard and a
> well adjusted and maintained AM stereo exciter actually produced good 
> stereo
> separation on the order of 15 to 20 dB which is really plenty for the 
> stereo
> effect to be noticeable. While we can do a lot with today's technology 
> to go
> beyond what the original inventors would have thought possible the 
> effect is
> lost mostly on cheap receivers as you mentioned in your post.
>
I think even in the heyday of AM stereo many went beyond the 15 to 20 db 
cited. I can think of a number of stations that were around 30 db 
separation except possibly at the extreme ends of the spectrum. I can 
think of a few that did nearly 40 db midband and mid to high 30s 
everywhere else. How many early FM systems did that.

R