This 12V power supply has been designed to power the ER79A, the French version of the well known PRC-10 series.
Its works from 9.5V to 16.5V with a current varying from 410mA (receive) to 1300mA (transmit).
It uses the PS-26-A battery or the BA-30 arrangement.
Pins 'C', 'F' and 'J' have to be connected when testing the unit outside the receiver.