With it, you can connect your radio\\\'s RS-232 serial port to a PC with Logger Software and an MBD-8E, MBD-8F, MBD-8G, MBD-12F, MBD-62 Controller or any other Hamplus automatic antenna switch. Like the AE-603A, AS-603AL, AS-603WL, AS-603HR, AS-603VR or AS-603UR.