In article , Dave Plowman (News)
wrote:
In article , Stewart
Pinkerton wrote:
32ks/s (==16kHz bandwidth)? Isn't FM capable of up to 19kHz? ISTR
hearing that, or at least, that the difference signal (?) is stuck up
19kHz above the main signal.

Yes, it is, which means a 'brick-wall' filter from 15kHz to suppress
the pilot tone, since brick walls weren't so high back in the '50s!

Or didn't bother - as Quad with the FM3.

Afraid I am not sure what you mean. The diagrams and descriptions I have
for the FM3 show third-order (?) LP filters after the output from the 1310
stereo decoder. These follow the time-contants which also tend to roll
down HF. Do you mean something else, or an earlier tuner?

Slainte,

Jim

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