Icom IC-730


Pre-amp relay replacement

The well-known problem of this tcvr, hi. For the replacement I used FORWARD relay P-12. I soldered short insulated wires on the pins and isolated the pins with heat-shrink tubings. The relay hangs on the wires above the PCB. However, because the wires are short and there are 8 of them, it is well tough and stable.

Antenna relay replacement

After many many contests the antenna relay got faulty. Unfortunately the relay with the same pin layouts is unavailable for a direct replacement. I made a small PC sub-board to solve this. The new relay is HONGFA HF8A-1CH-12DE. The original relay ant and the new one looks very similar inside (left original, right the new one).



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