This was a huge relief because the predriver and final transistors, 2SC1971 and 2SC1972, are unobtainium now and it would have been a challenge to find reasonably priced replacement parts especially because many of these parts are known to be counterfeits (uncontrolled Asia imports).
Ts 2000 serial number calculator driver#
After a full day of troubleshooting and signal tracing, I was fairly convinced that the finals and pre-final driver stage were OK. Not too bad!The 1W contact on the W5RRR 2m repeater was a reasonable power level to activate the repeater since we were pretty much in line of sight with the Building 1 antenna and our power was similar to a Handheld radio.Īfter studying the schematic, the block diagrams, and a few searches online, it was clear that this was a unique problem. So conceivably, the 2 contacts we made earlier on 20m were made with only 8 Watts on SSB. Next step – I then hooked up a dummy load and power meter, here what I measured: It was actually a very lousy job with black liquid rubber coating and exposed sheath and center conductors! I removed this modification and redressed the wiring with heat shrink tubing. The previous owner spliced into the onboard line and snaked a line out one of the back vent holes. After the bottom lid was removed, and some schematic tracing, it was determined that the previous owner wanted a special port to feed an external Receive Antenna. The first item to do was to determine why the previous owner brought out a coax line from the back of the unit, terminated with a BNC connector. This weekend I got a chance to check it out on my workbench. Interesting that we couldn’t hit the repeater unless we jacked the power output up all the way. A quick audio check with KG5WNN at least verified we were modulating and the radio worked.įor some reason, the power output in each case looked low, but there was no definitive way to tell since the TS-2000 has a relative power meter. We then hooked up the radio to an internal whip and loaded it on 146.640 MHz. We called CQ again and bagged a very strong K7. He said we were extremely weak, but since he was mobile AND the band was starting to close, we thought it was just a bad luck QSO. We received a response from a mobile station and he gave us a 5×3 signal report. We hooked it up on the 20m TH7DX and called CQ around 6:00pm. Unfortunately, it had some issues so he brought it into the Shack last week for a checkup. John, KG5ZOR, bought a TS-2000 for a great price.