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
$10 And Under Items
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FSB31-1/4, ID=1/4"/6.3mm, RFI Range 1-300 MHzFSB31-1/4, ID=1/4"/6.3mm, RFI Range 1-300 MHzSKU FSB31-1/4-1List price $3.95 Save 25%$2.95On Sale
FSB75-1/4, ID=1/4", RFI Range 150Khz-10 MHzFSB75-1/4, ID=1/4", RFI Range 150Khz-10 MHzSKU FSB75-1/4-1List price $19.95 Save 50%$9.95
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On Sale
FSB31-1/4, ID=1/4"/6.3mm, RFI Range 1-300 MHz
FSB31-1/4, ID=1/4"/6.3mm, RFI Range 1-300 MHz
SKU FSB31-1/4-1
List price $3.95
Save 25%
$2.95
On Sale
FSB75-1/4, ID=1/4", RFI Range 150Khz-10 MHz
FSB75-1/4, ID=1/4", RFI Range 150Khz-10 MHz
SKU FSB75-1/4-1
List price $19.95
Save 50%
$9.95
