I am sending an audio feed to videographer from mixers aux send/xlr cable and he gets a radio station/RFI. There was no RFI coming out of the main speakers. We disconnected the xlr cable from the aux send output and connected a headset to same aux out. No radio station/RFI. Disconnect the headset and connect the xlr cable...radio station/RFI returns in the camera and nothing out the mains. Jim Brown has posted a great paper on RFI that I'm getting to reading...could this camera have a pin 1 problem? He connected a hardwired boom mic near the podium to record directly to his camera. At the end of the 1 1/2 hour presentation I asked the videographer not to strike anything just yet. We connected his camera via xlr cable back to the same aux send and there was no radio station/RFI. Any ideas?