Paul,

I took a couple pictures this morning.

The first is the Model number of my military Dovetron.

The second is of the output connectors. I chose to use the +- 12 volts for my polar relay instead of the +- 5 volts.

This is the obvious difference from the civilian unit which keys its internal loop supply.

If this message does not get too big I will include a picture of my "Teletype Wall" showing the polar relay. It is mounted so the armature moves sideways instead of up and down so gravity does not bias it.

Tom N3CRK