12:1 Baluns/Ununs

2329287526 - 12:1 Baluns/Ununs

FT140-61, ID=.9", RFI Range 200-2000 MHz - Bulk 10 Pack

Store/Ferrite Core Products/Mix 61/Ring - Mix 61 RFI Range: 200-2000 MHz
SKU F140-61-10
$34.95
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FT140-61, ID=.9", RFI Range 200-2000 MHz - Bulk 10 Pack
Store/Ferrite Core Products/Mix 61/Ring - Mix 61 RFI Range: 200-2000 MHz
Product Details
MPN: F140-61
RFI Range (MHz): 200-2000 Mhz
ID-B (in/mm): .9/23
OD-A (in/mm): 1.4/35.6
Height-C (in/mm): .5/12.7
Weight (oz/gm): 33 grams
Initial permeability: 125
A(L): 140
Case/Box lot size: 336

Ferrite Ring Toroid Core, ID = .9"/23mm, OD= 1.4"/35.6mm Mix 61 - Replacement for uncoated Ferroxcube/Phillips TX36/23/15-4C25. This listing is for a bulk pack of 10.

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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.