FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz

Name: FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz
SKU: F140-43
Price: 3.89 USD
Availability: InStock

F140-43

$3.89

In stock

Quantity:

Product Details

RFI Range (MHz): 20-250 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: 850

A(L): 1060

Frequency (MHz)/Single turn impedance (ohms): 25MHz:38 ohms, 100 MHz:80 ohms

Ferrite Ring Toroid Core, ID = .9"/23mm, Mix 43

Excellent for impedance transformers like 2:1, 4;1, 9:1 or use our convenient Balun/Unun DIY kits with all the parts needed.

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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.