FB56-61 - 1/4" ID, RFI Range 200-1000 MHz
Product Details
Initial Permeability (@ 10KHz): 125
Material: NiZn
Max cable size - in/mm: .25/6.3
OD (A) - in/mm: .562/14.3
ID (B) - in/mm: .25/6.4
Length (C) - in/mm: 1.125/28.6
Z (ohms per bead - single turn 100 MHz): 205
Z ohms (per bead - single turn 250 MHz): 295
Z (ohms per bead - single turn 500 MHz): 370
Z (ohms per bead - single turn 1000 MHz): 350
Ferrite Slip On Bead - ID = .25 in/6.4mm - Mix 61, 1 piece
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.