New installation, have a single Skyview display, two coms and intercom-2S as my "audio panel". Testing on the ground. With intercom off, both radios transmit and recieve noise free, but when I turn on intercom I get static through the phones (loud). Radios transmit noise free (others recieve noise free), I hear their transmissions undistorted, but static is always present, not cutting out when transmissions come in. Turn intercom off, all is quiet again, but volume is significantly diminished. Same behavior is true with engine running, but turning up intercom causes static to be unbearable, just to hear incoming transmissions. Any advice to kill this static problem in the intercom?