Balun Hybrids include an impedance balun (2:1, 4:1, 6:1, 9:1, 16:1, etc) and a 1:1 balun (choke) in a single enclosure. Use on OCF, loop, terminated dipoles and similar coax fed antennas requiring an impedance transformer Suppresses common mode current on the coax outer braid (prevents your dipole from acting as a tripole!).
FB68-31 - 3/8" ID, RFI Range 1-300 MHz
Product Details
Initial Permeability (@ 10KHz): 1500
Material: MnZn
Max cable size - in/mm: .25/6.3
OD (A) - in/mm: .687/17.45
ID (B) - in/mm: .375/9.5
Length (C) - in/mm: 1.125/28.6
Z (ohms per bead - single turn 1 MHz): 27
Z (ohms per bead - single turn 5 MHz): 69
Z (ohms per bead - single turn 10 MHz): 89
Z (ohms per bead - single turn 25 MHz): 138
Z (ohms per bead - single turn 100 MHz): 225
Z ohms (per bead - single turn 250 MHz): 265
Ferrite Slip On Bead, ID = .375in/9.5mm, Mix 31