The VQS-500, from Cimarron Technologies Corp., is a simple plug-in board for Vertex Standard radios that will both encrypt and decrypt audio and encode/decode and display MDC-1200/GE-STAR functions. Features easy programming with a 512 MDC-1200 or 512 GE-Star alias table, MDC-1200/GE-STAR radio kill, call alert, radio check, selective call and microphone monitor capability.