Off Center Fed (OCF) Antennas SWAN Electronics Transceiver RFI Kits Store/RFI Solution Kits/Radio Communication RFI Solutions/HF/VHF Transceiver RFI/Noise Kits/SWAN Electronics Transceiver RFI KitsRefine by FiltersClear allFiltersClear allShow itemsShow itemsSWAN 250, 350, 400, 500, 700 Transceiver RFI Kit - 4 RFI/Noise Reduction FiltersSWAN 250, 350, 400, 500, 700 Transceiver RFI Kit - 4 RFI/Noise Reduction FiltersSKU RFI-SWAN$34.95 Buy Now 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,