THIS IS A DUAL BANDER 144 TO 148 MHZ AND 430 TO 450 MHZ. THE RADIO RECEIVES AND TRANSMITS WHEN IT WANTS TO INTERMITTENTLY. THE VFO IN THIS UNIT DOES NOT CHANGE FREQUENCY AND THE BATTERY DEAL UNDER THE COVER IS BROKE AND THAT MIGHT BE THE MEMORY CIRCUIT THAT NOTHING IS LOCKED IN. I DON'T HAVE THE BATTERY TRAY SO FOR PARTS OR REPAIR THIS RADIO COMES WITH THE BOOKS THE INSTRUCTION MANUAL SERVICE MANUAL AND THE AC POWER CORD NO MICROPHONE. SHELF 4-A