but yes, if i had some alligator clips and wires attached to an earth pin on the power system it would kill the radios... i don't see how it could lead to current going into it unless my place got struck by lightning or something, current goes where the strongest positive potential exists, which is earth... it's also a hassle, the case comes apart with clips easy enough, but to put earth through to silence all those antennas would mean leaving the case open
this way now is safer, just put em inside a faraday cage, gone