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Which SmartSDR should I download

It's been a couple of years since I have had a Flex radio so I'm a little rusty. I bought a used 6400 yesterday that had been use only on a Mac. I will be using Windows 10. Are the versions 2.x considered maintenance and free? If these are free, which version should I go with?


  • ka9ees
    ka9ees Member ✭✭✭

    Depends on which version is in your rig. Current version is 3.2.39 and 2.7.6. I don't know which #1 version is.

  • John KB4DU
    John KB4DU Member ✭✭✭✭

    If the flex has a V2 version installed, a later V2 version will be free. If it has a version of V3, a later version will be free. If it has V1 or V2 and an upgrade to V3 is desired, that cost $200.

  • Roger Miller
    Roger Miller Member ✭✭

    Thanks John, I think I will play around with a free version till I make up my mind about the radio.

  • John KB4DU
    John KB4DU Member ✭✭✭✭
    edited December 2021

    Good idea.

    the only real difference is that the v3 allows multiple ops to connect at the same time.

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