In the early 70s my employer used stand alone data entry tape units in our remote
locations. We started with NCR units but then switched to Tally. In the late afternoon the
data would be transmitted to the home office in Chicago for processing. Also using
NCR/Tally units. We used Racal-Milgo modems. These things were about the size of a large
home stereo receiver. We started at 2400 baud. The units could do 3600 or 4800 (I don’t
remember which) if a circuit board strap was moved.
We had locations in many cities/towns all the way out to Montana. It was decided that we
needed to have the ability to switch between 2400 and the faster speed when possible. We
did not want to have the locals power off the modem, open it up, remove a card and move
the strap. So I got volunteered to come up with a plan.
I found a place in the modem where I could mount a switch. Luckily the modem had a sliding
panel on the front so the locals would not have to open the box top. Went to our fleet
garage where they had the tools I needed. I made a bunch of aluminum brackets for a tiny
toggle switch. Added wires to the switch.
It was also decided that we could not trust the locals to do the switch install. So part
of the plan included me going to all the locations and doing the install. I did not have a
car at the time so I got a fleet car. Headed south to Kentucky then turned west. Don’t
remember all the states I hit but I believe the last place I hit on the way home was
Rockford. I remember being on a back road in Montana and I took a picture of my
speedometer. I was doing 65. This was when there was a countrywide speed limit of 55. I
can’t be limited by the Man. :)
Back at the home office we had 6 NCR/Tally machines and only 4 modems. I built a plug
panel box that had everything wired to it and used telephone jack plugs to connect the
Tally’s to an available modem. The box also had switches for the modem speed.
I now forget how long the whole process took. Put my DeVry AAS degree to good use. :)