Nidge
Second Officer
United Kingdom
Offline
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Action cameras have a long history of RFI issues, especially in the drone and general RC hobby. Go back as far as the GoPro2 and Möbius action cameras and there were many reports of GPS interference, not just to the GPS but also some UHF control links.
In the case of the Möbius action camera the interference was most severe on the 433MHz band which some long range systems used. A couple of manufacturers came out with aftermarket self fir metal cases which did a reasonable job of screening. I personally used adhesive copper foil on the inside of the plastic case. One of my small/mid-sized drones, a Xugong Pro 2, caries a GPH4B. This really screws with the DJI Naza GPS receiver. To get around this I have used the same adhesive copper foil inside the camera, placed the Naza V2 flight controller in a screened aluminium case, and screened the underside of the GPS receiver.
Digital cameras use very fast switching digital circuits, which in turn generate very high frequency noise. These cameras have generally got smaller as they’ve become more powerful, and there’s less room to effectively screen the noisy circuits. With these cameras there’s no real priority to screen against RFI as using them in radio situations, such as with your drone, isn’t exactly a primary use. So why would the manufacturers go to trouble and cost of doing this when the market is relatively small? |
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