I have a 20 year old KAS-20110-ORC caller that just went TU on me. The main controller for the unit is a 5 1/4" x 5" black plastic box with a plug in for the external speaker and a hard wired connection to a Cobra Microtalk radio. Battery powered remote has numeric keypad plus * and # and communicates with the Cobra radio. All batteries check ok and everything powers up Ok. When I slowly enter two digits to select a specific call the lightning bolts on the Cobra radio tower icon flash which indicates it is communicating that far. However nothing happens at that point. When it worked you would hear some sort of low volume static after you slowly entered the two digits to select a call. Any suggestions/advice appreciated.