16:1 Baluns/Ununs

FT140-77, ID=.9", RFI Range .1-10 MHz, Pack of 10

F140-77-10
$34.95
In stock
1
Product Details
MPN: F140-77
RFI Range (MHz): 100 KHz-10 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: 2000
A(L): 2250

Ferrite Ring Toroid Core, ID = .9"/23mm, Mix 77. Excellent for low frequency switching power supplies. RFI range .1-50 MHz.

Bulk pack of 10.

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16:1 Baluns are useful between 750-850 ohm balanced loads where the impedance at the  end of the feed line is 800 ohms (1/2 wavelength feed line), or high impedance feeds for rhombic,  T2FD and traveling wave antennas.

16:1 Ununs are useful between coax and long wires with a load impedance near 800 ohms like a beverage antenna.  Shortwave listener antennas also can benefit with the 16:1 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.