I am sorely in need of a schematic for the YAESU FRB-1 relay connection box,
specifically the din plug wiring color code. The 5 pine din plug supplied with
the FRB-1 has three wire coming from the cable, red, blue, yellow...where do
these connect? Which one goes to the 13vdc port, the PTT port, and that leaves
the common(yellow wire) to ????. I am useing this relay box to interface with
the FT-747GX and a Heathkit SB-230 amplifier. Thanks.........JACK.....W7EFZ
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