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
50:800 ohm (16:1) CUBE™ Balun, 1-31 MHz, 1KW/2KW PEPProduct DetailsType: BALUNInput ohms/Output ohms: 50 in/800 out balancedFrequency Range < 2:1 SWR (MHz): 1-31 MHzPEP Power Rating (watts): 1000/2000Insertion Loss (dB): .2Input Connector: SO-239 UHFOutput Connector(s): Top Studs/Side EyeboltsTransformer Topology: broadband binocular coreHardware Type: Stainless SteelEnclosure Size: 4" x 4" x 2"Weight (pounds): <2Antenna Compatability: T2FD, Rhombic, V beamAvailable in eyebolts or top stud versions and 1KW/2KW PEP ratings. Excellent SWR over 1-31 MHz range.
Manual Down Load for CB-16-1000/2000
50:800 ohm (16:1) CUBE™ Balun, 1-31 MHz, 1KW/2KW PEP
Product Details
Type: BALUN
Input ohms/Output ohms: 50 in/800 out balanced
Frequency Range < 2:1 SWR (MHz): 1-31 MHz
PEP Power Rating (watts): 1000/2000
Insertion Loss (dB): .2
Input Connector: SO-239 UHF
Output Connector(s): Top Studs/Side Eyebolts
Transformer Topology: broadband binocular core
Hardware Type: Stainless Steel
Enclosure Size: 4" x 4" x 2"
Weight (pounds): <2
Antenna Compatability: T2FD, Rhombic, V beam
Available in eyebolts or top stud versions and 1KW/2KW PEP ratings. Excellent SWR over 1-31 MHz range.
Manual Down Load for CB-16-1000/2000
