2.4Ghz range reduced by Video tx?


I'm not sure if this may have been asked before but has anyone had any problems with the range of their 2.4Ghz equipment through the use of a 5.8Ghz video transmitter? I was out over the weekend and noticed my plane seemed to have lost it's signal sooner than I would have expected when flying out. If it wasn't for my spotter I may not have got it back so thought it easier to ask the question than try again. The video signal never dropped out.

I was using and Spektrum Dx7 (no mods) with a 200mw 5.8Ghz Video tx. The Spektrum is at the front of the plane and the video tx is near the tail.

Cheers, James


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  • Hi Muhammad, I fly out on the tops on some local hills and the nearest building is a couple of miles away so I'm certain it's not 2.4Ghz interference, also make sure wifi is off on my phone just in case.

    I'll give the 360 a try and see what happens. It might also be worth trying one of those 2.4ghz amplifiers as a test. Cheers for the advice.

  • Hi James.

    I used to have my Rx in the front of my FPV plane and would experience poor RSSI flying away from myself (I have FRSky telemetry, so I always managed to turn back before getting to the point of losing control.) I recently moved my Rx to the tail and haven't had much orientation-dependent range since. The antennas have good visibility from just about every direction back there. 

    I too have a 200mW 5.8GHz Tx, which I relocated to the center top of my wings. It has great visibility up there as well. So far I've flown ~1km with clear video. 

    It is also possible that something out there was causing interference on 2.4GHz. I've seen this a few times flying behind my local high school. I'd be flying with RSSI in the 60s and 70s, then suddenly dropping to the 40s in a specific area over the football field. They have wireless scoreboards, so that my be what was causing the interference for me. Also may be multi-pathing from the metal bleachers. 

    Try doing a 360° range test. You might find that you have great range from the front, but decreased range walking behind the model. 

    Hope something in there helps!

     - Muhammad. 

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