Hi, I'm only getting about 50m of decent video transmission (~150') before it becomes terribly snowy and unrecognizable. Transmitter: 600mw Immersion 5.8 GHz, Receiver RX-LCD5802 Antennas: 3 clover transmitting, 4 clover receiving (a), helical circular (b). Any recommendations? I've noticed I'm getting a bit of interference such that when I place tinfoil between the receiver antenna's and controller antenna, the video improves. Any help appreciated.