"R J Carpenter" wrote in message
...


Wideband. I suspect that the S-37 and S-36 differed only in tuning
range.
The S-36 had an IF bandwidth suitable for FM broadcast. The wouldn't
have
been any narrow FM in that frequency range in 1945. Certainly no land
mobile, and wasn't land mobile about 20-30 kHz wide until post-WW2?
Crystal
frequency stability didn't get good enough for NBFM at high VHF until
the
hermetic holders like the HC-6, which are post-WW2, aren't they.


My S-36 has two selectivity settings, sharp and broad. The broad
position is fine for FM broadcast. I don't know how sharp the sharp
position is.


[snip]

Frank Dresser