Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Telemetry link?

Discussion in 'Standard/4k Discussion' started by BayouBill, Jul 17, 2016.

Tags:
  1. BayouBill

    Joined:
    Jul 1, 2016
    Messages:
    232
    Likes Received:
    57
    Can anyone tell me which RF link is used for the telemetry data? 5.8G or 2.4G?
     
  2. Craig.W

    Joined:
    Jan 19, 2016
    Messages:
    48
    Likes Received:
    1
    The frequency witch is use to transmit the video downlink I guess which is the 2.4G the 5.8G is used to transmit only RC data


    Sent from my iPhone using PhantomPilots mobile app
     
    dan84uk likes this.
  3. dan84uk

    Joined:
    Jun 7, 2016
    Messages:
    97
    Likes Received:
    22
    Location:
    Birmingham UK
    Id like a conclusive answer to this too, The GPS location/orientation seems to update even after video is dropped. That doesn't mean to say its not still using 2.4. though, hmmm
     
  4. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    4,005
    Likes Received:
    1,170
    Location:
    Brookeville, MD, USA
    Conclusive answer: Post #2 is correct. 2.4 is used for both video and telemetery. Sometimes one or the other will crash leaving you with one of the two. But they're both using 2.4
     
    dan84uk likes this.
  5. alokbhargava

    Joined:
    Sep 28, 2015
    Messages:
    5,143
    Likes Received:
    1,659
    Location:
    San Francisco, CA
    Both use 2.4 Ghz and they are two independent channels.
     
    dan84uk and Mark The Droner like this.
  6. BayouBill

    Joined:
    Jul 1, 2016
    Messages:
    232
    Likes Received:
    57
    2.4G it is. Thanks guys.
     
  7. Craig.W

    Joined:
    Jan 19, 2016
    Messages:
    48
    Likes Received:
    1
    Well said man


    Sent from my iPhone using PhantomPilots mobile app
     
  8. Craig.W

    Joined:
    Jan 19, 2016
    Messages:
    48
    Likes Received:
    1
    No problem man cheers


    Sent from my iPhone using PhantomPilots mobile app
     
  9. RodPad

    Joined:
    May 20, 2015
    Messages:
    2,653
    Likes Received:
    368
    Location:
    Pacific,NorthWet, 97031
    Are both channels one way transmissions?
    Meaning the Phantom is sending the data to the remote, the phantom doesn't resend like a network connection. (re-sends on failure)
     
  10. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    4,005
    Likes Received:
    1,170
    Location:
    Brookeville, MD, USA
    It's not one way, it's two way on at least one of the channels. This has been explained a few times on the board here. My understanding re the video data is there's a check involved, so once the controller receives video data, the controller will send info back to the Phantom confirming receipt and asking if the data sent is good and not corrupted. If the phantom answers yes it's correct and not corrupted, the data is then sent from the controller to the mobile device.

    This is why if you're going to add an amp, you want one that works both ways. You want one that amplifies the outgoing signal, and one that also amplifies the incoming signal.

    This is one of the advantages of Lightbridge - there is no check.
     
    RodPad likes this.
  11. RodPad

    Joined:
    May 20, 2015
    Messages:
    2,653
    Likes Received:
    368
    Location:
    Pacific,NorthWet, 97031
    Hum, so more things to think about, thanks!