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Yaesu VX-1r TX mod

Discussion in 'Yaesu' started by Se7en, Sep 30, 2011.

  1. Se7en

    Se7en Well-Known Member

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    Thanks to Moleculo for the mods. i added some pictures to show where the pads are etc....


    This mod will expand the transmit range from 137-175 Mhz and 410-470 Mhz



    Remove battery
    Remove the (3) small black screws.
    Carefully open the radio, spliting the radio front and rear cases Looking down inside of the top left side of the radio (left of rotary encoder) , locate and ADD Solder to jumpers "0" and "1" (jumper "0" is the top jumper and jumper "1" is below it)
    Assemble radio.
    Press and hold [M/V] and [AR] keys while turning on the radio.
    [​IMG]

    [​IMG]
    you will see need to be bridged with a small tad of solder.
     
    #1
    Last edited: Sep 30, 2011

  2. MattMan

    MattMan Member

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    In your instuctions you say to solder jumper "0" and "1" but in the pictures you posted, you did not show the jumpers being any different in the way matching your instuctions. Do you really put solder there?
     
    #2
  3. MattMan

    MattMan Member

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    you also have the tiny bit of "something" on 0 that looks like it's crossing over form 1
     
    #3
  4. Se7en

    Se7en Well-Known Member

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    Yea it had the mod. I removed it and sold it on eBay right after this thread was made. The ht is a joke....more like a toy than a radio.
     
    #4
  5. tgray

    tgray Member

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    VX-1R Extended Mod

    I came across this straight forward mod that you've post. Have seen it as well on other forums. I'm still struggling to get my 1R to properly boot up and read the soldered jumper change.

    Have pressed and held [M/V] and [AR] keys while turning on the radio to no avail. Radio was originally purchased and used in Asia. Transmitting properly inside default frequencies but not beyond 146 Mhz.

    Have backed out the solder. Still transmitting to 146 Mhz. Did the jumper solder mod again, held keys on power up. No change.

    One other observation. When holding keys and powering up, INIP F appears in menu. This does not occur if i back the solder mod out so the circuit seems aware of the change when resetting. If I hit the FW key the menu changes to INTIAL, resets, but still no transmission above 146 Mhz.

    Thoughts?

    Thanks.
     
    #5

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