Shielding a GoPro’s EMI / RF Noise
I have seen lots of talk about the noise that a GoPro produces and it’s potential effects on UHF radios. I didn’t think much of it until I got a RangeLink LRS recently and also had a crash on my tri that might have been related to a loss of signal.
A post on FPVLab has discussed how others have measured the noise from a GoPro and how it can be drastically reduced by shielding the camera with copper foil. While this is cool, I don’t want to cover my cameras more or less permanently with copper foil.
This is the solution I have come up with. I created paper templates for the Hero1/2/3 cameras. I print the template, cut it out, cut the features I want access to and then trace it onto the copper foil. I stuck the copper foil onto freezer paper which has a glossy side. I kept the glossy side opposite of the foil. This way when I cover my GoPro with the shield, I can use a bit of tape to keep it all held together and the tape will come off without tearing the paper.
I haven’t tested the before and after yet but might be purchasing the RFexplorer so I can measure the noise. Others have noted that in addition to the copper shield, a ground wire should be soldered somewhere on the shield.