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
Ring - Mix 43 RFI Range: 25-300 MHz
Mix #43, Material: NiZn, Initial Permeability: 850
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FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHzFT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHzSKU F140-43List price $4.50 Save 14%$3.89On Sale
FT240-43, ID=1.4", RFI Range 25-300 MHz, Case of 100FT240-43, ID=1.4", RFI Range 25-300 MHz, Case of 100SKU F240-43-100List price $1,000.00 Save 21%$795.00
Ring - Mix 43 RFI Range: 25-300 MHz
Mix #43, Material: NiZn, Initial Permeability: 850
Refine by
On Sale
FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz
FT140-43, ID=.9", OD=1.4", RFI Range 25-300 MHz
SKU F140-43
List price $4.50
Save 14%
$3.89
On Sale
FT240-43, ID=1.4", RFI Range 25-300 MHz, Case of 100
FT240-43, ID=1.4", RFI Range 25-300 MHz, Case of 100
SKU F240-43-100
List price $1,000.00
Save 21%
$795.00