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FPV Installation - Concerns?

Discussion in 'FPV (First Person View)' started by beeps, Jan 11, 2015.

  1. beeps

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    Hello,

    Just got a Phantom 2 V.2, H3-3D and a bunch of FPV stuff. My goal was to install all the bits inside and have the cleanest possible look. One of the concerns I've read about is heat... I have a 200 mW VTX taped to the top of the mini iOSD. I left the transmitter on for some time while the case was open and, while it certainly got warm, it never got to what I considered hot.

    Here are some pictures of my install:
    [​IMG]

    I re-routed some of the cables - the H3-3D ribbon, compass, and barometer all share the same hole now.
    [​IMG]

    Which freed up a hole for my antenna mount
    [​IMG]

    And the antenna
    [​IMG]

    The GPS foam sits right above the VTX and the iOSD is right under it... makes me a little worried about heat build up. Should I be looking for another spot to put it?

    I had it out to about 400 meters on my first flight and it had a clean signal. But, the weather is pretty cold right now.

    Thanks for any feedback.
     
  2. CityZen

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    Probably only generates a similar amount of heat as the P2V+ wifi unit. I'd guess it's okay.

    Btw, the barometer is inside the Naza FC. Perhaps you meant the receiver antenna?
     
  3. beeps

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    How many antennas does it have? There are 2 similar little wires that hang down. One looked like it was hollow but looking just now, it appears to have some wire in it.
     
  4. CityZen

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    The receiver has 2 antennas.
     
  5. PhantomFanatic

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    200 mW won't produce enough heat to worry about.
     
  6. Ejohn

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    My dad's an engineer and he is saying the same, so dont worry about it :)
     
  7. phenom3030

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    Is it okay to put one of the receiver antennas on the same leg as the compass?
     
  8. beeps

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    Great! Thanks for your help, everyone.
     
  9. mendezl

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    you could place the vtx next to the vent under the main board and next to the battery / main battery connection. It would get some air circulation there for peace of mind.

    Another forum member put this together
    viewtopic.php?f=23&t=32207

    And great looking explanation pictures
     
  10. QYV

    QYV

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    I don't think anyone else has mentioned this yet, but with the antenna in that exact position you've got some "dead zones" for signal... for example when the Phantom is facing you, the antenna will be blocked by the gimbal/gopro. You may want to consider extending that antenna down a little.... I Actually have mine below the leg of the Phantom so no matter what direction the Phantom is turned, I get solid FPV

    or at least you'll know why you get inconsistent FPV signal when the Phantom moves around
     
  11. Hughie

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    Nice installation. Good job.

    One thing which would bug me, would be the prospect of needing to change tx channel for some reason.
    Much easier to be able to do this without having to strip the top off.

    Also, as QYV has pointed out, I dont think you have the optimum positioning for your antenna. It will be obscured by the gimbal when flying towards the pilot.
     
  12. beeps

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    Moved the VTX so I could get to the dip switches with the battery removed.
    [​IMG]

    [​IMG]

    Things were getting a little warm too. I took this reading after about 10 minutes of just the P2 on, not running, and with top off. It has a lot more surface area to cool now that it's not sandwiched in like it was before. I can also take quick temp readings after some flying.
    [​IMG]
     
  13. Mick Emmett

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    Is there really such a difference in the amount of heat generated by the vtx between a 200 mW and a 600 mW, I have a 600 mW Immersion and you could fry and egg on it (if it was bigger) and there would be no way I would put it inside.
     
  14. lake_flyer

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    My 250mW Fatshark gets really hot too. I have it attached to the leg under the right aft rotor to cool it down. Great reception all around.