1.5:1 Baluns/Ununs

50:75 ohm (1.5:1) CUBE™ Balun/Unun, 1.8-61 MHz, 1.5KW PEP

CB-1.5-1500SO

50:75 ohm (1.5:1) CUBE™ Balun/Unun, 1.8-61 MHz, 1.5KW PEP CB-1.5-1500SO

Available as a Unun for 50 ohm coax to 75 ohm coax or 75 unbalanced load or as a Balun for 50 ohm coax to balanced load such as a low (less than a wavelength high) dipole with either side eye bolts and halyard hoist or as post mountable top studs output.

This is an impedance transformer for 50 to 75 ohms and may require a additional feed line choke to keep common mode current off the coax braid.

Top stud version also useful for 75 ohm ladder line to coax.


$79.95 In stock
Brand:Palomar Engineers
Model:CB-1.5-1500/CU-1.5-1500
Type:BALUN/Unun
Input ohms/Output ohms:50 in/75 out
Frequency Range
PEP Power Rating (watts):1500
Insertion Loss (dB):<.2
Input Connector:SO-239 UHF
Output Connector(s):Top Studs/Side Eyebolts/So-239
Transformer Topology:broadband binocular core
Hardware Type:Stainless Steel
Enclosure Size:4" x 4" x 2"
Weight (pounds):2
Output Connector Top Studs(2)/wingnut (balun) (0) Eyebolts on Side/Top Eyebolt (balun) (5) SO-239 (unun) (0) Top Eyebolt/Side Stud (unun) (0)
Balun or Unun? Balunced Output (balun) (0) Unbalanced Output (unun) (0)
50:75 ohm (1.5:1) CUBE™ Balun/Unun, 1.8-61 MHz, 1.5KW PEP50:75 ohm (1.5:1) CUBE™ Balun/Unun, 1.8-61 MHz, 1.5KW PEP50:75 ohm (1.5:1) CUBE™ Balun/Unun, 1.8-61 MHz, 1.5KW PEP

50 ohm coax to 75 ohm balanced output baluns are useful for low (< 1 wavelength) dipoles exhibiting 75 ohm characteristic impedance or for matching to balanced ladder line whose endpoint impedance is near 75 ohms.

50 ohm coax to 75 ohm CATV coax connections are easily done with a 1.5:1 unun with SO-239 connectors on input and output.  Likewise 50 ohm coax to unbalanced verticals or loads near 75 ohms can be matched with a 1.5:1 unun.