Batboard

Came across this power supply from the old -GGT days. I've never seen one like it before. ANyone come across one like it before?

It's an SP model number. Pretty clean and it works.! Built like a tank!

AC supply for a tube-type Motorola base station transceiver, I would guess.

At the very beginning of my career I worked on the old -GGV and -GGT radios. But never saw one of these power supplies.

Just kind of cool to see some new Motorola gear when you think you've seen it all.

It's a Rural Radiotelephone Fixed Subscriber Unit power supply. Like for farms and so forth. From the MTS days, about 1962. It ran a high band T-Power drawer with 1 or 2 MTS Bell System channels and later a 35 Watt class Motrac.
There was a telephone style control unit that ran the setup, and if memory serves a car battery to (briefly) back-up the setup if AC were lost.

One of the T-Power manuals shows it, just can't recall which one. The manual title says something like "Mobile and Fixed Subscriber..." You can see how Motorola was always good at re-using existing production parts.

110 volts AC in, providing 13 volts DC for the mobile radio which at that time was a T Power. T4xGGT radio.

The T Power heatsink and radio housing made a very nice 'box' for the power supp;y.