Off Center Fed (OCF) Antennas Mix 61 Store / Mix 61 Ring - Mix 61 RFI Range: 200-2000 MHz Ring - Mix 61 RFI Range: 200-2000 MHz Snap On - Mix 61 - RFI Range 200-2000 MHz Snap On - Mix 61 - RFI Range 200-2000 MHz Slip On - Mix 61 - RFI Range 20-2000 MHz Slip On - Mix 61 - RFI Range 20-2000 MHz Featured Products Ferrite Sampler Pack, Mix 61, RFI Range 200-2000 MHz - 10 filters - 1.4" ID Ring, Snap on 1/4, 1/2, 3/4 Slip On 1/2 Ferrite Sampler Pack, Mix 61, RFI Range 200-2000 MHz - 10 filters - 1.4" ID Ring, Snap on 1/4, 1/2, 3/4 Slip On 1/2 SKU FSP-61-10 $89.95 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,