driving down the road not doing anything--just sandbagging. all of a sudden without warning the 959 rodger beep starts beeping continuously. the TX/RX LED seemed to be stuck on both (LED was both red & yellow). weird. when i keyed ther mic i could transmit however upon unkeying the beep stayed on. i shut the car for a while then started it again and all was well...for a few minutes. then the problem started again. wiggled mic connections and checked grounds...everything checked out. any ideas?