Off Center Fed (OCF) Antennas Mix 52 Store / Mix 52 Mix 52 RFI Range 200-1000 Mhz Mix 52 RFI Range 200-1000 Mhz OCF antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna which is fed off center with a 4:1 OCF Current balun with built in feed line choke,