> You could also punch a tape locally (keyboard to tape punch) then
   > minimize your on-line time by quickly sending the pre-punched tape
   > (tape reader to serial interface).
   >
   > I believe paper tape is why the ASCII delete character is 0x7F (all
   > holes punched).  Great fun to make chaff by punching a tape of all
   > delete chars.  Receiving a delete caused the head to cycle but the
   > latch magnets did not engage.  Reading a tape of all deletes caused
   > the ASR-33 to sit there and vibrate but not print anything.
   >
   > 						Lee Jones

My first teletype machine was a Model 19 - 45.45 baud, Baudot code (6
bits?).  It did
not have a synchronous motor, just a little lever on the motor you adjusted
while watching the strobe pattern on the motor with a tuning fork
that had a built in viewing window.  When the lines stood still, you were
right
on speed - for a short period of time.

The machine worked great on 20M RTTY with a homemade (vacuum) tube
"modem" - they were called Terminal Units (TU) back then.

When it was receiving, the whole house shook.  If it ever hit
resonance with the framing, it would have brought the house
down.

Carey , K8VZ


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