Yaesu G-450C Rotator

Yaesu G-450C rotator doing a full rotation and return showing the overlap feature.

Removing the limiter from a Yaesu ft7900r to enable the capability to transmit on gmrs frequencies and other bands not originally intended. Very small resist…

/25 Comments/by
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25 replies
  1. Brad Bowers
    Brad Bowers says:

    @703511 I believe that is incorrect! I’ve paid my $80 to the FCC and have
    my GMRS license. As long as I stay within legal output (watts) I can use
    any kind of transceiver I want.

    Reply
  2. 703511
    703511 says:

    @warezjoe5 *WRONG* Amateur radio’s are not what is known as “Type Accepted”
    for operation outside the amateur bands. Although they will in fact work
    just fine in the GMRS band, it is in fact a violation of Part 97. I was
    trying not to begin quoting Part 97 rules but I guess it’s too late for
    that. Just ask any licensed amateur operator, or better yet, look it up on
    the official FCC website, or ask in any amateur radio forum.

    Reply
  3. 703511
    703511 says:

    You do realize it’s illegal to transmit on GMRS using an amateur radio.
    Dummy load or not, what you did in this documented video is not kosher. If
    you intend to do this, and a lot of hams do, you shouldn’t video-record
    yourself doing it for all to see.

    Reply
  4. SovereignRangers
    SovereignRangers says:

    Yes AND no. You “CAN” use any radio you want, assuming you stay within the
    legal limit, and you’ll most likely never have any problems. But there are
    still “type accepted” radios you are supposed to use. So if for whatever
    reason an FCC jackboot is examining your GMRS station and your using a
    “non-approved” radio, you can still get in trouble.

    Reply
  5. roadwarriorjon592
    roadwarriorjon592 says:

    I should note that I do occasional stuff for a taxi company and also have
    light business licence for 449mhz hence my need of enhanced coverage. Wish
    it could do cb too but I have never come across any radio that goes down to
    27mhz.

    Reply
  9. nickhow100
    nickhow100 says:

    ive done this mod and mine now does 136-174 tx and 420-470 tx is this the
    same as yours as you said 120-170 and 420-470 at the start of this video .

    Reply
  11. bronk5150
    bronk5150 says:

    I found it was just as easy to use a small pedicure kit scissor tool and
    snip the jumped in the middle. The jumper still looks like it is there, but
    it does not do anything, and bands are wide open.

    Reply
  12. roadwarriorjon592
    roadwarriorjon592 says:

    I did it on my ft7900e uk version. I just snipped at the jumper with some
    nail scissors and then used a safety pin to “ping” the remaining bit off.
    Works great many thanks.

    Reply
  13. YeOldeScience
    YeOldeScience says:

    I did mine by just ripping the part off with tweezers. Not fancy or neat,
    but it works just fine. I’ve modded EVERY radio I’ve owned including HF
    radios. I laugh at people who worry about what is against the rules. WHO
    CARES?! I use my radios on GMRS, FRS, marine VHF, MURS, ect. Sure it’s
    illegal. I do it almost every day and I am a licensed ham, general class
    too. No giant foot from the FCC will come down from the sky and squish you.
    Just be courteous to others on the air and have fun.

    Reply
  14. foresterperformance
    foresterperformance says:

    According to Part 97, GMRS radios must be “certified” to be allowed to
    transmit on GMRS frequencies. One big factor of getting certification is
    that the radio CANNOT transmit on Amateur frequencies as well. While having
    a GMRS license and staying below the 50w maximum will keep you under the
    radar enough that you likely will never get caught, it is still breaking
    the “letter” of the law. There is also provision in FCC rules that you can
    use any frequency at your disposal in an emergency.

    Reply
  15. SovereignRangers
    SovereignRangers says:

    @703511 That is correct info, but what is the point of being an asshole
    about it? He isn’t hurting anything and there is no victim here. You
    corrected his mistake, now it’s time to move on…

    Reply
  16. jon falconer
    jon falconer says:

    wats the other jumper for as ive dun the first one it works but ive tried
    going on pmr channels and thweres a few missing inbetween some of the
    frequencies

    Reply
  17. soulprepper
    soulprepper says:

    Hey I just picked up a 7900r. It works great sept The factory setting on
    the mic is to low. It has great signal. nice and clear everyone says. but
    verry low volume.I have the mic gain set on wide And there are no other
    settings to raise the mic gain. Do you have any information on how to fix
    this? Thanks

    Reply
  19. Achisachis73
    Achisachis73 says:

    exactly! there should be a radio out there that would cover all these frs,
    gmrs, and ham frequencies and all you would have to do is get the license.
    just like the HAM radios, people buy them without a license. The purpose I
    think, is to be able to comunicate with less equipment but, I think that
    these laws make you spend more money to jump through the hoops and call
    yourself “legal”. Why carry two radios if you can do it with just one?
    license? just pay it! do not make me carry/buy two radios

    Reply
  21. SovereignRangers
    SovereignRangers says:

    @warezjoe5 TECHNICALLY: the FCC can still be dicks about “approved radio
    types” and such, but as long as you stay within legal output power it
    shouldn’t be a problem unless some nosey asshole sees this video and
    reports it, or some FCC jackoff with too much time on his hands sees the
    video himself and decides he wants to investigate further. Fuck ’em anyways
    I say, thanks for the vid!

    Reply
  22. Stewy Mojo
    Stewy Mojo says:

    I’ve heard tx ends at 470mhz after this mars mod. Can you confirm this? If
    not what is the upper frequency limit which the transmitter will lock?

    Reply
  24. Xaun Loc
    Xaun Loc says:

    You believe wrong — but then again, I believe you knew that all along. The
    rules about using only type approved radios to transmit in any of the Part
    95 services are totally clear — you are welcome to say that you don’t like
    the rules, but don’t bother pretending that you don’t know that
    transmitting on GMRS with this radio is illegal in the US.

    Reply
  25. Stewy Mojo
    Stewy Mojo says:

    You said tx up to 480mhz? Would like to confirm this as I see one comment
    below says he got to just 470mhz.
    Can anyone confirm tx to 480mhz?

    Reply

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