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.

  • This reply was deleted.
    • Adam Warburton 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).
  • Glen Leeon May 19, 2014 at 11:11pm

    My Iris arrived and I ordered the 915 thinking that was what I should be using but 3DR sent the 433. What is the advantages of one over the other? Would like to know whether I should get 3DR to send the 915 or keep the 433?

    What is involved in getting an amateur radio licence?

    Where do I get one from?

    How do I know the wattage the radio is outputting?

    • Adam Warburton > Glen Leeon May 20, 2014 at 12:04am
      Actually right now they are just two whip antennas of varying sizes. I do have a large patch antenna I'll be using with an antenna tracker system. Just haven't range tested it yet.
This reply was deleted.