Here are the specifications of the Morrow MB560 transmitter.
6 vdc @ 6a or 12 vdc @ 3a
67.5 vdc @ 1ma
250 vdc @ 90ma
300 to 600 vdc @ 200ma
52 to 70 ohm pi network
12AT7 Osc
6AN8 Buffer
5763 Doubler
6146 Final
12AX7 1st AF
6AL5 Clipper
12AT7 Driver
6AV5 Modulator
6AV5 Modulator
0B2 Regulator
0B2 Regulator
Latest update: 12/28/25