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Discussion of general interest including club business and events. Please post ARES discussion in the SC4ARES group.

FRS/GMRS Frequencies

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  • #11055
    Neil, W6VG
    Participant

    Found a great chart of the new FRS/GMRS frequencies (2017). Of particular interest are the frequencies common to both radios, and the GMRS repeater info. Here’s a link to the pdf in our library:

    http://www.sc4arc.org/wp-content/uploads/2020/03/frs-gmrs-combined-channel-chart—the-radioreference-wiki.pdf

    #11058
    David, KM6DOV
    Participant

    FRS-GMRS combined channel chart

    The browser seems to have rewritten the 3 dashes and broke the link. Here’s the fix.

    If you note on this chart, someone with a GMRS license can use up to 50 watts on those frequencies. Typically, cheap Chinese radios like the Baofeng, TYT, and Leixen have these frequencies unlocked, but it’s possible to modify Kenwood, Icom, and Yaesu radios to unlock those frequencies for transmit. This is called a MARS/CAP mod, and you can find instructions online. You will definitely want a steady hand with a soldering iron because the parts are TINY. You’ll also need an antenna tuned to the higher frequencies or risk burning out your radio. Fortunately, we have the skills to build antennas! And if you’re just making one for GMRS, it’s only the short bottom section, so it’s far less soldering, unless you want to tune the top segment for MURS frequencies. But that’s another topic for a later time.

    #11059
    Joseph, K9JOE
    Participant

    Just keep in mind that transmitting on those frequencies with a modified radio is illegal….Just say’n.

    #11060
    David, KM6DOV
    Participant

    Oh right. Yes. Forgot to mention, don’t modify your radio unless you’re a MARS member (which I was when I modified mine).

    #11061
    Neil, W6VG
    Participant

    Here’s a new link to the FRS/GMRS chart: Click Me

    • This reply was modified 3 months, 1 week ago by Neil, W6VG.
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