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:
Also available as a balanced output – CB-5-1500
FB Mix 31 - RFI Range: 1-300 MHz
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FB102-31 - 1/2" ID, RFI Range 1-300 MHz
FB102-31 - 1/2" ID, RFI Range 1-300 MHz
SKU FB102-31-1
$3.30
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FB103-31 - .77" ID, RFI Range 1-300 MHz, LMR600
FB103-31 - .77" ID, RFI Range 1-300 MHz, LMR600
SKU FB103-31
List price
$21.50
Save 42%
$12.50
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FB200-31 - 1" ID, RFI Range 1-300 MHz
FB200-31 - 1" ID, RFI Range 1-300 MHz
SKU FB200-31
List price
$23.50
Save 41%
$13.95
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FB56-31 - 1/4" ID, RFI Range 1-300 MHz, 10 Pieces
FB56-31 - 1/4" ID, RFI Range 1-300 MHz, 10 Pieces
SKU FB56-31-10
List price
$16.50
Save 9%
$15.00
FB Mix 31 - RFI Range: 1-300 MHz
Refine by
FB102-31 - 1/2" ID, RFI Range 1-300 MHz
FB102-31 - 1/2" ID, RFI Range 1-300 MHz
SKU FB102-31-1
$3.30
On Sale
FB103-31 - .77" ID, RFI Range 1-300 MHz, LMR600
FB103-31 - .77" ID, RFI Range 1-300 MHz, LMR600
SKU FB103-31
List price
$21.50
Save 42%
$12.50
On Sale
FB200-31 - 1" ID, RFI Range 1-300 MHz
FB200-31 - 1" ID, RFI Range 1-300 MHz
SKU FB200-31
List price
$23.50
Save 41%
$13.95
On Sale
FB56-31 - 1/4" ID, RFI Range 1-300 MHz, 10 Pieces
FB56-31 - 1/4" ID, RFI Range 1-300 MHz, 10 Pieces
SKU FB56-31-10
List price
$16.50
Save 9%
$15.00