YOU ARE BUYING A USED RAYTHEON RN300 GPS 300/320 RC CONN 002155 PCB.BOARD NUMBER IS 3015-214 ISSUE B 214AN-B .ANNTENNA CONNECTS TO BACK COVER AND PLUG INTO CPU BOARD SO ITS LOSE AND COMES WITH PCB. SEE PICTURES SELLING AS IS BOARD WAS TESTED GOOD IN GOOD SHAPE