25:1 to 81:1 Baluns/Ununs These baluns and ununs can be used for impedance matching and also as End Fed halfwave antenna matching transformers to 50 or 75 ohm coax cable. FSB Mix 43 - RFI Range: 20-300 MHz Store/Ferrite Core Products/All Snap On Split Beads/FSB Mix 43 - RFI Range: 20-300 MHzRefine by FiltersClear allFiltersClear allShow itemsShow itemsFerrite Flat Cable RFI/Noise Filter, 1.35" wide slot RFI Range 10-500 MHz, 1 PieceFerrite Flat Cable RFI/Noise Filter, 1.35" wide slot RFI Range 10-500 MHz, 1 PieceSKU FSB43-1.35-1$5.95 Buy Now