5:1 Baluns/Ununs

5:1 CUBE™ Unun – Model CU-5-1500 (50:250 Ohm, 1.8-61 MHz, 1.5KW PEP)

Application. For traveling wave, end fed or portable 20-31 foot vertical antennas the 5:1 unun makes a good transformer for converting 50 ohm coax to a 250 ohm feed point. If you use the antenna on multiple bands, the feed point impedance may not always be 250 ohms and use of the unun at high (>350 ohms) or low (<100 ohms) will require reduced power input or the unun may have its power ratings exceeded and damage to the unun may occur. The (5:1 conversion ratio will change for loads other than 250 ohms unbalanced.

Typical application:

CU 5 1500 antenna - 5:1 Baluns/Ununs

Also available as a balanced output – CB-5-1500

FT140-61, ID=.9", RFI Range 200-2000 MHz - TX36/23/15-4C25 Replacement

SKU F140-61
$3.89
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FT140-61, ID=.9", RFI Range 200-2000 MHz - TX36/23/15-4C25 Replacement
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