[GreenKeys] Nems-Clarke Teletypewriter Switching Unit

[Harold Hallikainen]

Stuff sure got complicated!

I maintained an Alden weather fax machine at an FAA FSS. They had LOTS of
Teletypes. One interesting thing (to me) was that they would do their
weather observations, punch a tape, then put the tape in a TD. Several
minutes later, the TD was polled and the tape read and sent somewhere.

Harold
https://w6iwi.org/rtty