[GreenKeys] Boehme

[WA5CAB at cs.com]

JP,

It is a TU.  Or more correctly a Converter.  And actually a pretty good 
one, albeit a trifle on the heavy side.  Audio type, two-channel diversity 
input.  Single channel (loop) output.  Built-in loop supply.  AFSK range 
200-15,000 cps tunable.  Output either neutral or polar.  Input impedance 500 or 
5000 ohms.  Filter type.  Lower filter is fixed.  Upper is adjustable.  Scope 
display is of the "+" type.  Output mark/space is reversible with a front 
panel switch.  AFSK speed range up to 250 wpm.  Also runs make-break 
(high-speed CW) up to  500 wpm.  Dates from the late 50's.  Mostly used by the 
spooks.

Hard copy reprint of the Instruction Book $15.00 plus shipping.  I have one 
of the converters and used to use it almost exclusively, usually behind a 
pair of Super Pro's running either space or polarization diversity.

In a message dated 12/11/2009 5:04:36 PM Central Standard Time, 
elvispharris at rtmc.net writes: 
> Hello, GreenKeyers,
> 
> I  am a new member and I have a piece of equipment that I know  
> nothing about.  The google failed to turn up anything.    I picked it  
> up at the Shelby Hamfest  hoping it might work as a TU.
> 
> It is a Boehme frequency shift converter, Type 5-C.  It appears to  
> have a small crt  tuning indicator in the upper left of the rack  
> panel.  If more details are needed I would be glad to list everything  
> I can see, inside and out.
> 
> Any information would be welcome.
> 
> JP
> KI4ZVX
> 
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480