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FTM-400DR MARS Mod

Discussion in 'Yaesu' started by deputyjoel, Jan 24, 2014.

  1. AZRULEXI

    AZRULEXI New Member

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    I'm waiting to buy the radio depending on the info from this forum. Buller? Buller ?


     

  2. N1ZZN

    N1ZZN New Member

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    I'm also interested in knowing the location of R1848 to perform this mod...
     
  3. centurion

    centurion Member

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    here is ......in mine works great..... us only........... 20141007_103458.jpg 20141007_103458.jpg
     
  4. N1ZZN

    N1ZZN New Member

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    Thanks much, I did this today, worked just fine.
     
  5. shepsvettes

    shepsvettes Member

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    Do you remove r1848?
     
  6. centurion

    centurion Member

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    thats the one r1848...
     
  7. N1ZZN

    N1ZZN New Member

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    Sorry for the delayed response. Yes I removed R1848
     
  8. WVHick

    WVHick Member

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    What's the new TX range after this mod? Can it go down to 136? Seems a lot of Yaesu's won't get below 137
     
  9. W5ARP

    W5ARP New Member

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    Just did it, and it worked. That resistor is tiny. Used a magnifying glass and the tip of my pocket knife. A light push in each side of the resistor, the tweezers to pull it out.

    137.000 is the lowest it goes.
     
  10. earlm

    earlm Member

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    Will this work in the US VERSION?
     
  11. W5ARP

    W5ARP New Member

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    Yes
     
  12. deputyjoel

    deputyjoel W9WDX Amateur Radio Club Member

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    Just removed R1848 and it opens up the US version. Works fine.
     
  13. GIS_Guy

    GIS_Guy New Member

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    137-174MHz, and 420-470MHz is what I got
     
  14. snoopy

    snoopy New Member

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    Anyone have the location and resistor for the AUS version?
    Its a different board layout to the US version.
     
  15. kc7izh

    kc7izh Member

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    Did this MOD on my USA model. Works fine to open up frequency.
    Even though I backed up my memories to SD card, I had to UPDATE my RT SYSTEMS programming software, the re-write the memories to the SD card...
    Then plug in the SD card and backed up radio from SD card and all memories and APRS settings are there...
     

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