This is a rebuild / restoration of a very RARE Browning Labs Mark 100 Amplifier. This was a tube type mobile amp, running a pair of 6JG6A sweep tubes at about 650vdc in grounded grid. It has a heavy steel cabinet, uses a typical pi-net output circuit and a DC-DC converter to achieve the HV through a step up transformer.
I got this from a friend, and she was in very rough condition. I stripped the cabinet and sanded it smooth. I color matched it to the original color with info from another collector.
The original transformer was burned out, the germanium switching transistors were bad, as were the caps, t/r relay, etc. Since no one uses these in mobile operation any more, and it needed a new transformer, I decided to configure it for 115vac to make it usable again. It got a fresh transformer, it already had a solid set of 6JG6A tubes, new caps, wiring, t/r relay, lv dc control circuit, new safety grounding AC power cord, etc.
2-1/2 watts drive with 5-1/2 pep modulated on AM keys about 45 watts, modulated to 90+ watts pep. Can be driven with up to 20 watts pep as long as the dead key is kept around 2 watts. Its a rare piece of Browning history, much more rare than the model 180, and there's not many of these left. Here's a few pics and videos...
