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Balun Designs

Model 4114 - 4:1 Current Balun 1.5 - 54MHz 5kW

$81.95

Model 4114 - 4:1 Current Balun 1.5 - 54MHz 5kW

$81.95
SKU:
4114
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Product Description

If you transmit high power, but need to erect your antenna with a leg over or near your house, barn, garage, metal building/roof or other structure, this is the balun of choice. Our unique design provides increased power handling, doubles the choking impedance and isolation while retaining the forgiving properties of single core designs. This balun is an excellent step up from the model 4113 and is not sensitive to high power reflected RF like the model 4115.

If you use ladder line or twin lead for your antenna, this balun can be installed remotely allowing you to run a short length of coax into your tuner or transceiver. This type of installation will keep stray RF (common to ladder line) out of your shack while retaining the low loss efficiency of ladder line for your antenna.

Only one application where this balun is not recommended. When building or replacing the balun at the feedpoint of a Carolina Windom that incorporates a vertical coaxial radiator, a voltage balun like our model 4125 should be used so RF will pass to the vertical radiator.
 

   model-4114-thumb.jpg
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All testing done with an AIM-4170 uhf  Network Analyzer and precision 200 ohm load
 

Specifications


 

  Core Material   Custom mix low permeability ferrite by Fair Rite Products for maximum bandwidth.
   Large 2.4 inch cores are coated and sealed for long term durability.
  Winding Type   Stacked cores with wire pairs wound as 4:1 current balun.
  Winding Material   2 bifilar windings of 14 gauge 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, 7kW intermittent.  35 to 54 MHz - 5kW.  
  All ratings based on resonant load. High SWR will reduce power handling ability.
  Useable Frequency   1 to 54 MHz
  Insertion Loss   Less than .02db
  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. 
 Will not heat up or saturate at like many of the "less expensive" designs.


Installation Notes