[MRCA] Harris RF 350K

Ray Fantini RAFANTINI at salisbury.edu
Sat Dec 30 21:05:17 EST 2017


One of the projects around the holiday was a Harris RF 350K transceiver. After replacement of a half dozen shorted bypass capacitors on the + and - 15 volt bus and repairs to the reset "auto start "on the controller have the mess working. As typical for that family of radios the relays on the filter board are shaky.
Separated the power supply from the radio for working on this monster on the bench and have been using the bench 12 volt power supply but decided now that I want to put the two parts together and use the heavy  power supply that comes with the radio.
The issue is the power supply takes a weird connector. It's a MS3106A 20-8S, the 8S is because it has two huge sockets along with four small pins for the AC and ground. The same plug is on the pigtail from the power supply to the radio and although I have never seen it done may just ditch the huge, heavy over built DC power supply and steel that connector to use the radio from 12 volts only.
Looking at the amount of work to get this radio up and running and the remaining issues with the filter board starting to think this family of radios were hanger queens and perhaps that's why so have been dumped by the government although they somehow appear to sell for big money. This radio was given to me by someone who sold it and then had it returned and never wanted to see it again after that happened so that's how I got it but the power connector may be a big issue being that looking on E Bay I don't see one.

Ray F/KA3EKH

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