12:1 Baluns/Ununs

442300382 - 12:1 Baluns/Ununs
+2

FSB31-3/16, ID=3/16", RFI Range 1-300 MHz - Single Piece USB, Mouse, Keyboard, Audio cable size

Store/Ferrite Core Products/Mix 31/Snap On - Mix 31 - RFI Range 1-300 MHz
SKU FSB31-3/16-1
$2.65
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List price $3.95
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FSB31-3/16, ID=3/16", RFI Range 1-300 MHz - Single Piece USB, Mouse, Keyboard, Audio cable size
Store/Ferrite Core Products/Mix 31/Snap On - Mix 31 - 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: .788/20
ID (B) - in/mm: .26/6.6
Length (C) - in/mm: 1.55/39.4
Z (ohms per bead - single turn 1 MHz): 28
Z (ohms per bead - single turn 5 MHz): 83
Z (ohms per bead - single turn 10 MHz): 105
Z (ohms per bead - single turn 25 MHz): 180
Z (ohms per bead - single turn 100 MHz): 310
Z ohms (per bead - single turn 250 MHz): 240

Ferrite Snap On, ID = .201 in, Mix 31

0.504" W x 0.220" H (12.80mm x 5.59mm)

Excellent for RFI/Noise reduction for AV cable, Coaxial Audio, Audio Power Line, IP Serial Port Camera, Computer USB, etc.,

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12:1 Baluns are useful between 600-650 ohm balanced loads the impedance at the  end of the feed line is 600 ohms (1/2 wavelength feed line), or high impedance feeds for rhombic,  T2FD and traveling wave antennas.

12:1 Ununs are useful between coax and long wires with a load impedance near 600 ohms like a beverage antenna.  Shortwave listener antennas also can benefit with the 12:1 unun and it may provide a better match than 9:1 ununs – this means quieter noise levels and stronger signals so you can hear distance stations easier.