2:1 Baluns/Ununs FB Mix 31 - RFI Range: 1-300 MHz Store/Ferrite Core Products/All Slip On Ferrite Beads/FB Mix 31 - RFI Range: 1-300 MHzRefine by Sort byWe recommendNewest arrivalsPrice: Low to HighPrice: High to LowName: A to ZName: Z to AFiltersClear allFiltersClear allShow itemsShow itemsFB102-31 - 1/2" ID, RFI Range 1-300 MHzFB102-31 - 1/2" ID, RFI Range 1-300 MHzSKU FB102-31-1$3.30 Buy NowFB56-31 - 1/4" ID, RFI Range 1-300 MHzFB56-31 - 1/4" ID, RFI Range 1-300 MHzSKU FB56-31-1$1.65 Buy NowOn SaleFB56-31 - 1/4" ID, RFI Range 1-300 MHz, 10 PiecesFB56-31 - 1/4" ID, RFI Range 1-300 MHz, 10 PiecesSKU FB56-31-10List price $16.50 Save 9%$15.00 Buy NowFB56-31 - 1/4" ID, RFI Range 1-300 MHz, 80 Piece Bulk PackFB56-31 - 1/4" ID, RFI Range 1-300 MHz, 80 Piece Bulk PackSKU FB56-31-80$110.00 Buy Now 2:1 (100:50) Baluns are useful between 50 ohm coax and 100 ohm balanced lines for loops, cubical quads, log periodics and other antennas where the impedance at the end of the feedline is 100 ohms (1/2 wavelength feedline).