2:1 Baluns/Ununs +2F23-61 Ferrite Ring - .12" ID, .229" OD - RFI Range - 200-2000 MHzStore/Ferrite Core Products/All Ferrite Ring Toroid Cores/FT Mix 61 - RFI Range: 200-2000 MHzSKU F23-61$0.39Bulk pricing available for quantities of 10 units or moreQuantity:1 Add More Add to CartGo to CheckoutBuy more, save moreQuantityPrice per itemDiscount10 items$0.3413% off100 items$0.2926% off1000 items$0.2438% offSave this product for later Favorite Favorited View FavoritesCustomer reviewsNo reviews yet. Only signed-in customers who bought this product can leave reviews. To leave a review, sign inShare this product with your friendsShareSharePin itF23-61 Ferrite Ring - .12" ID, .229" OD - RFI Range - 200-2000 MHzStore/Ferrite Core Products/All Ferrite Ring Toroid Cores/FT Mix 61 - RFI Range: 200-2000 MHzProduct DetailsMPN: F23-61Initial Permeability (@ 10KHz): 125Material: MnZnOD (A) - in/mm: .229/5.95ID (B) - in/mm: .12/3.05Length (C) - in/mm: .06/1.65Ferrite Ring, ID = .12 in/3.05mm, Mix 61Show More2:1 (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).