12:1 Baluns/Ununs

2250705601 - 12:1 Baluns/Ununs
+2

FT240-43, ID=1.4", OD=2.4", RFI Range 25-300 MHz, Bulk Pricing Available

Store/Ferrite Core Products/Mix 43/Ring - Mix 43 RFI Range: 25-300 MHz
SKU F240-43-1
$8.95
Bulk pricing available for quantities of 10 units or more
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QuantityPrice per itemDiscount
10 items$8.0011% off
100 items$7.2519% off
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FT240-43, ID=1.4", OD=2.4", RFI Range 25-300 MHz, Bulk Pricing Available
Store/Ferrite Core Products/Mix 43/Ring - Mix 43 RFI Range: 25-300 MHz
Product Details
MPN: F240-43
RFI Range (MHz): 20-200 Mhz
ID-B (in/mm): 1.4/35.6
OD-A (in/mm): 2.4/61
Height-C (in/mm): .5/12.7
Weight (oz/gm): 106 grams
Initial permeability: 850
A(L): 1240
Case/Box lot size: 100
Frequency (MHz)/Single turn impedance (ohms): 25 MHz:46 ohms, 100 MH:108 ohms

Very useful for RFI suppression, broadband impedance transformers

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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.