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Single antenna in controller is working

Discussion in 'Pro/Adv Discussion' started by nxs818, Aug 10, 2015.

  1. nxs818

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    Today I got my rf-explorer, I was checking the output signal transmitted from each antenna left and right, I was shocked when I found that only the right side antenna is transmitting a strong signal while the other one is dead..

    Anyone can assist me in this and tell me if there something I am missing or my controller is damaged?
     
  2. Tricky

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    is one send, one receive?
     
  3. nxs818

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    I have no idea, I wish I could find the schema of the controller, but I thought that its a dual antenna transceiver with MIMO mode but now am not sure at all.

    Sent from my Nexus 5 using Tapatalk
     
  4. N017RW

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    Only one antenna transmits. There is no problem with your controller.

    On the quad all 4 transmit.

    You will not find a schematic from DJI unless you know someone at a repair depot, etc.
     
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  5. nxs818

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    That's a big relief... Thank you..

    In this case I can go forward with adding another amplifier and high gain antenna for better reception .
     
  6. N017RW

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    Here is a excerpt from the FCC test report for the P3 controller:

    "Antenna Connector Construction-
    The EUT (Equipment Under Test) has an integral dipole antenna arrangement for transmitting, the antenna gain is 3.5dBi @ 2.4G
    Band, and another antenna only for receiving, fulfill the requirement of the item."


    To see the whole document go here:
    https://fccid.io/document.php?id=2535091
     
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  7. nxs818

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    This document is a beauty, I am amazed with all the testings do e by FCC, they measured every single aspect of the dji RF, thanks again, I didn't know that such site exists.