[GreenKeys] Seeking specifications for HAL LP-1200A loop supply

[Stan Wilson]

  I am interested in obtaining the input and output specifications for HAL's
LP-1200A loop supply.

  A schematic would be nice, but the actual signal levels and type IN are
the primary items of interest.

  The LP-1200A is listed as the Loop Supply for the ST-8000A.

  
  Anyone currently using the ST-8000A with a TTY machine?   I have always
wired my M28, etc so that the keyboard was in series with the selector
magnet for local copy.   Then sensing the loop, the keyboard, developed my
AFSK signals.   Does the St-8000A work in a like manner?

  The sudden availability of the St-8000A I expect will create a lot of
interest in our Greenkey hobby.   I for one want to get one on the air and
not just on the bench.   My current station is built around my M28 ASR and
my homebrew  TU.  I have always generated my AFSK signals for driving SSB
and same for decoing, fed the receiver's audio (AFSK) to my TU.  

  Reading the spec for the ST-8000A leds me to believe going from my
homebrew TU/AFSK keyer to it will be like going from a SWTP 6800 to a
current PC.   Should be fun.   Needed something to get me to oiling those
old M28s again.

Stan AK0B   -   My M28s are Bell Green.    If anyone is repainting an old 28
the green color can be mixed by a body shop since they supplied the paints
for the Bell autos and trucks.

Stan AK0B