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UNUN 9:1 3 kW för End Fed antennas

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Product Description:

 Model 9132sw - 9:1 Unun 1.5 - 54MHz - 3 kW


This design is excellent for matching both long and short length unbalanced wire antennas for multiband use. Allows the internal tuner of most rigs to tune remotely mounted single wire antennas. This unit utilizes stacked cores for increased power handling and added inductance for the lower frequencies. Be sure to review the various lengths in the attached document to obtain the lowest SWR across most if not all HF bands.




Ununs are intended for use with unbalanced antennas such as verticals and long wires. 

They will not work with balanced designs such as dipoles or loops and use with a balanced antenna may cause erratic operation and/or damage to the unit.







Core Material


Custom mix low permeability ferrite by Fair Rite Products for maximum bandwidth.

Cores are coated and sealed for long term durability.


 Winding Type


Stacked cores wound with single trifilar winding configured as 9:1 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 to 35 MHz - 5kW, 35-54 MHz - 4kW


Useable Frequency


  1 to 54 MHz


Insertion Loss


  Less than .02db




  SO-239 connectors are silver plated with Teflon insulation.

  Studs and eyebolts are 1/4 inch.

  Alternate connectors and Mounting Options are available in the Accessories section.




  All Stainless Steel


Enclosure Type


  NEMA rated 4x marine grade junction box for outdoor installations.

  Cover utilizes integral neoprene gasket for weatherproof integrity.




  4x4x2 inches for main body of unit


  Additional Info


  Very high efficiency (98-99%). 


Item ID:
UNUN 9132sw

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Produced by: Wikinggruppen

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