[GreenKeys] GRPE to LBXD RT Unit... RARE

[Don Robert House]

<http://www.projectgm.com/html/tele_15.html>

You have a very rare item there.

On the right side is a GRPE, the U.S. Government version of the DRPE  
Punch.
For those not familiar with the DRPE (and GRPE)  it is a multi-magnet  
tape punch that punches tape very fast...
something like 750 WPM.

The unit on the left side is an LBXD.  A model 28 twin-shaft  
Transmitter Distributor that uses a multi-contact
distributor to serialize the parallel tape read.

Together they are mounted on an Receive-Transmit (RT) base.

The purpose is to be able to receive very high speed communications  
information, usually on a land line..
and re-transmit the data at a slower speed, usually, but not always,  
over the air via RTTY.

The paper tape supply is an 18 inch roll.  There is an intermediate  
tape storage bin and a large 20 inch take up reel.
All of this is fully punched chad, not chadless, and so there is  
usually a chad bag with a motor-blower assist.

We have a GRPE at the museum in San Diego.  LBXD TDs are relatively  
common...  RTs and GRPEs are NOT.

73,
Don
K9TTY

Tracer of open circuits and lost causes...