Telemetry in Australia

Posted by Glen Leeon on May 19, 2014 at 10:08pm

I have an Iris from 3DR and would like to connect a OSD and fly some auto missions.

What is the correct telemetry frequency we are allowed to use in Australia?

915mhz or 433mhz.

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Replies

  • Henri August 1, 2015 at 2:17pm

    I can only tell you what works for me:

    For video and osd I transmit using this: Video Tx and Video Rx plus the Tx Antenna and a decent Receiving antenna

    For the telemetry I don't use their modem instead using a great modem: Better than 3dr modem and that is directly compatible with mission planner.

    Hope you'll see the "light" :-)

  • MikeRover May 22, 2014 at 4:33am

    Read this - especially the bottom

    From a regulatory perspective, you want to operate under a thing called the "Low Interference Potential Devices (LIPD) Class License". If you comply with its requirements, you don't need an individual HAM license (which is why it's called a class license.

    The link above gives you the settings you need to comply with the license.

    You picked a bad time to buy from 3DR, but they might still be able to ship radios. One of the Aussie distributors *might* be willing to do a swap for you.

    You're probably better off with the 900MHz if you want to operate legally, but the 433MHz if you're happy to blow through the license-required power. 

  • Hotwire May 22, 2014 at 3:43am

    433MHz

    915MHz is 3G

    • Adam Warburton > Hotwire May 22, 2014 at 4:45am
      Long story short 915mhz is fine you do not need a license to use because of the way the telemetry radios operate.
      433 can be used without a license BUT you must turn the power right down to 25mW in the settings.
    • Glen Leeon > Hotwire May 22, 2014 at 3:48am

      Thanks Dave,

      Seems like I have the right one then? From all the answers, it sounds like a confusing subject. Can you confirm that I need a license or not?

    • Hotwire > Glen Leeon July 1, 2014 at 5:37pm

      No licence for 433MHz but its a very narrow shared band.

    • Francisco K > Hotwire August 18, 2015 at 4:25pm

      No license for 433MHz as long as, your transmission power does not exceed 25mW. Anything beyond that will require a HAM Radio License to operate it.

  • mP1 May 19, 2014 at 11:29pm

    Speaking of 900mhz, how is it that mobile phones and 3g mobile usb sticks can get such good range with hidden tiny antennas but fpv equipment needs much larger antennas that are not quite as effective ?

    • Adam Warburton > mP1 May 20, 2014 at 12:25am
      Yeah I think it's just the sheer size and power of the towers themselves. If the receiver and antenna on the tower is sensitive enough you wouldn't need the 3G stick to be all that powerful. Also the towers have many directional high gain antennas spread out to cover the areas around it (or cells).
    • Matthew Kerle > mP1 May 19, 2014 at 11:34pm
      Just as a wild guess, I'd say its because the transceiver towers that your phone talks to push out hundreds of watts, and they have massive high gain patch antennas on full 360 degree coverage. If you could mount that transmitter on your UAV and have their receiver as your ground station you'd be able to fly until the earths curvature blocked the signal.
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