Model 1232 - 1:2 Unun (22/25 to 50 ohms) 2kW

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  • Model 1232 - 1:2 Unun (22/25 to 50 ohms)  2kW
  • Model 1232 - 1:2 Unun (22/25 to 50 ohms)  2kW
  • Model 1232 - 1:2 Unun (22/25 to 50 ohms)  2kW
Frequently bought together:


22/25 ohms unbalanced to 50 Ohms unbalanced

Unlike Baluns, Unun's (unbalanced to unbalanced) provide impedance transformation for antennas that are naturally unbalanced because of their design configuration. Even though the unun's appear small is size, they are able to handle very high power (2kW continuous - matched condition) because of their excellent efficiency.

This unit can be built to either 22 or 25 ohms so please make sure you select the value required when ordering. It should be noted that the manner in which ununs are wound provides NO common mode or RF choking impedance. This unit is excellent for matching antennas such as inverted L's and other unbalanced antennas with low feedpoint impedance.


 Other unun ratios are available by contacting us via the methods shown in the About Us section.

This is a specialty wind and due to the custom nature of this unit, is not eligible for exchange or return unless there is a defect in materials or workmanship.


  Core Material   Custom mix low permeability ferrite by Fair Rite Products for maximum bandwidth.
  Core is coated and sealed for long term durability.
  Winding Type   Individual core wound with trifilar set configured as 1:2 unun.
  Winding Material   14 gauge Superior Essex Heavy build polyamideimide Allex 240 Winding Wire
  Windings are inserted into Teflon tubes increasing total breakdown to 10,000 volts.  
  Power Rating   1.5 to 35 MHz - 2kW
  Useable Frequency   1.5 to 35 MHz
  Insertion Loss   Less than 0.1db
  Connectors   SO-239 connectors are gold center conductor with Teflon insulation.
  Studs and eyebolts are 1/4 inch.
  Alternate connectors and Mounting Options are available in the Accessories section.
  Hardware   All Stainless Steel
  Enclosure Type   NEMA rated 4x marine grade junction box for outdoor installations.
  Cover utilizes integral neoprene gasket for weatherproof integrity.
  Dimensions   4x4x2 inches for main body of unit
  Dimensional Drawing of Standard Enclosure
  Additional Info   Very high efficiency (98-99%) 

Installation Notes

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