[GreenKeys] IBM Keypunch

[Jim Haynes]

On Tue, 8 Sep 2015, Able Baker via GreenKeys wrote:

> Did not realize there was so much interest/demand for the old machines.  I
> can't imagine anyone having any useful function for their original intended
> purpose.  Is there still any application for punched cards?  Or are they
> just antique display items?

I spoze one could rewire the keypunch to become a card transceiver, and
then we could transmit punch cards by radio just like using RTTY.

Then we could put an old twist on QSO-by-macro-keys
You punch a card with the other guy's callsign, and you have cards for
calling CQ, for answering a CQ, for starting a transmission, for the
"over" function, and for the SK function.