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Balun Designs

Model 9132 - 9:1 Unun 1.5 - 54MHz - 2kW

$72.95

Model 9132 - 9:1 Unun 1.5 - 54MHz - 2kW

$72.95
SKU:
9132
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Product Description

This design is excellent for matching both long and short length wire antennas for multiband use. Allows the internal tuner of most rigs to tune remotely mounted single wire antennas. This unit is a single core version of the model 9135 for those who do not require higher power capability and is also lighter weight.  Be sure to review the various lengths in the link below to obtain the lowest SWR across most if not all HF bands.

Installation Notes and Wire Length/SWR Table

This unun should be used with the wire lengths listed in the table shown in the above link. Use of the 9132 for "random" wire lengths, other than shown, can potentially create an impedance that is too low for an ATU to match. If a wire length not shown in the table is installed, an antenna analyzer should used to determine the actual feedpoint impedance that will require matching for each band of operation.

 

Caution
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.

Specifications



  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 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 54 MHz - 2kW.  
  Useable Frequency   1 to 54 MHz
  Insertion Loss   Less than .02db
  Connectors   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.
  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
  Additional Info   Very high efficiency (98-99%).