FB68-31 - 3/8" ID, RFI Range 1-300 MHz, RG-6 Size Cable
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, Perfect for RG-6 cable size - also RG-8X
50 ohm coax to 75 ohm balanced output baluns are useful for low (< 1 wavelength) dipoles exhibiting 75 ohm characteristic impedance or for matching to balanced ladder line whose endpoint impedance is near 75 ohms.
50 ohm coax to 75 ohm CATV coax connections are easily done with a 1.5:1 unun with SO-239 connectors on input and output. Likewise 50 ohm coax to unbalanced verticals or loads near 75 ohms can be matched with a 1.5:1 unun.