[Milsurplus] Re: Boehme equipmen

[neil277 at juno.com]

I went to 286.1 school in early 1960 and the Boehme-5C was one of the
equipments we learned. Pretty simple circuits. Black front panel. Open
frame construction. Used the receiver tuning for max signal strength;
tune BFO for best lower freq (Horz propeller); adjust Boehme tuning for
best upper freq (Vert propeller). I thiink it had a normal-reverse
switch. Keyed internal loop supply (120v 60ma). Connections were to a
terminal strip on the back. I think th front panel was 4U or 5U high -
It was sort of a universal shift FSK converter at a time when everyone
was starting to get away from 820cps shift. There weren't a lot of them
around, and I didn't work on them every much. Can't remember much else
- last saw them in 1962 or 1970. At the time there didn't seem to be
any mil standard FSK converter that had adjustable audio shift tuning.
I think it was replaced by mil nomenclature CV-305; but I remember them
even less. 

Oh, there was also a Boehme-6E that worked in reverse. DC shift in and
two tone audio out for recorders. 2U height.- - - I think(?)

Neil, 286.1.. .2  .6; & 33 CMF