[Premium-Rx] Manual Wanted: CEI Standard Frequency Multiplier

[Jeremy Nichols]

Finally got my CEI Standard Frequency Multiplier 100% working. Introduced
by Communications Electronics, Inc., in September 1964, the SFM-1 appeared
in the 1966 CEI catalog (page 106). It must have been a short-run
instrument because it is not in the 1968 CEI catalog (after CEI was merged
into Watkins-Johnson). Thanks to Terry O's site, I now know the SFM-1 was a
standard product, not a one-off, special or prototype. Mine was a very
early model, serial 102. Wonder how many they sold?

Using a mix of transistors, Nuvistors, and metal-ceramic UHF triodes, the
SFM-1 takes a 1 MHz input signal and produces 50, 100, 500, and 1000 MHz
outputs (available simultaneously), with the same stability and accuracy as
the input reference source. I have no idea what I'm going to do with this
thing but it's a fun toy.

Still looking for a manual; it would be nice to understand HOW this thing
does what it does.

Jeremy