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Use VHF radio to transfer data

Discussion in 'Electronic Design' started by [email protected], Mar 8, 2007.

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  1. Guest

    I want to collect data from auto (taxi) to a control office.

    Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
    this to transfer data to the controlling site.

    Thuan Nguyen
  2. GPRS, GSM or SMS. Or you could mail it. ;-)
  3. Eeyore

    Eeyore Guest

    A typical taxi transceiver ?

    Have you considered Morse Code ?

  4. Ha ha ha, it's such an obscure communications method now that the DHS would
    probably think it was some kind of covert operation. ;-) I bet there's not
    ten people reading this list that have passed a code test. Almost none of
    them will be under 50 years old.
  5. Bob

    Bob Guest

    Read the taxi firm's radio license first. They are probably only
    licensed for voice transmissions.

  6. Say 'one' 'zero' 'one' 'one'.....
  7. mpm

    mpm Guest

    What country are you in? (License issues)
    What kind, and how much data are you talking about?

    There are many manufacturers of add-on encoders for two-way mobile
    Including simple automatic-ID units (to know who's keyed up).
    Also, there are many DTMF microphone solutions.

    Let me know your requirements, and I can steer you in the right
    It would also be helpful to know the radio make & model(s), including
    whether or not any portables are involved.

  8. Guest

    IF your license allows it, you can use various schemes that use audio
    frequency shift keying, there are chipsets designed for this. google
    FX/MX469 chip. Note most radio regulatory agencies get very antsy
    and very interested if you send a data protocol they dont like or cant
    decode, and the possible penalities for disobeying are HARSH, no
    matter where in the world you are.

    Steve Roberts
  9. -.-. --- .-. .-. . -.-. -

    ..--- .. --

    I bet there's not
  10. C O R R E C T
    J I M

    It's been a long time, but I think that's right. I'm surprised I remembered
    enough to get that without cheating, but I did sound it out in my head. :)

  11. Are they still using stolen PRC-77 radios in Vietnamese taxis?

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  12. jasen

    jasen Guest

    :) my computer agrees... (morse from the "bsdgames" package)

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