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

2654143997 - 5:1 Baluns/Ununs
+3

DC Cable Noise Filter for 2 Gauge and Smaller Wire - 1.4" ID

DCCF-1.4
$12.95
In stock
1
Product Details
MPN: ACCF-3
Type: New
Country/Region of Manufacture: United States
RFI Range (MHz): 150 KHz to 10 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: 5000

(2.4″ OD, 1.4″ ID hole), RFI Noise Suppression Range: 150 KHz-10 MHz, Mix 75

Excellent for large cables or multiple cables – use multiple cores for higher choking. Also useful when you need high turns count for high choking with large cable - works on large gauge DC power cables.

Note: put both positive and negative cables TOGETHER through the filter so that their differential currents cancel but their common mode currentsare suppressed.
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