Motorola GM300 cross band repeater

I’ve been playing around with old Motorola commercial gear on the amateur bands, and decided to try a cross band repeater. This setup is using 1/each of the VHF and UHF versions. For ID and repeater control, I built an ID-O-Matic IV by The duplexer is a MFJ916B. Antenna is a TRAM-1480 @ 35′ AGL.
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Other images of this repeater setup can be found at: mainelife images

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One Comment

  1. Jason Moore March 2, 2019 at 4:14 am #


    I’m very interested in doing this myself.

    How’s this project progressing? Did you need to modify either radio at all?



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