Hello All: I picked up a Tram 201A 40 channel rig a few years ago in almost good shape. Missing a mode and no SSB made it not fun to use. After several weeks of trouble shooting I found a broken wire, shorted capacitor on the Balanced Modulator Board, two weak tubes, and quit a few bad resistors and suspect capacitors.
Adding a quiet fan in the back to help cool it off and a quick alignment I noticed it was still about 10 to 20 dB down in the receive but the pre amp in the DX-300 amp helped some what. After weeks of all this intense work it was ah hummin and buzzin again and it was a real enjoyment to use. Ah yes the channel selector switch was now intermittent on most channels, and would cut out just when I was in a QSO, how wonderful!
I noticed that when the channel selector knob was slightly held in the up position I had a solid transmit and receive. I installed a 5/16 vacuum hose between the lower lip of the chassis and channel select knob, allowing a slight pressure being pit on the channel select knob, allowing the radio to work as expected.
I also would like to see a DDS VFO for the Tram and other radios. Maybe when I get some time I could buy one and make it work, but would love to see what Nomadradio comes up with if he sells a unit.
Looking over a few DDS VFO sights:
http://www.pongrance.com/
http://faculty.frostburg.edu/phys/latta/ee/vfo/vfo.html
Jay in the Great Mojave Desert
