Off Center Fed (OCF) Antennas Wall Wart Power Suppy RFI Kits Store/RFI Solution Kits/Smart Home RFI Solutions/Wall Wart Power Suppy RFI KitsRefine by FiltersClear allFiltersClear allShow itemsShow itemsWall Wart RFI Noise Filter Bulk Pack of 10 FiltersWall Wart RFI Noise Filter Bulk Pack of 10 FiltersSKU RFI-WW-10$27.95 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,