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Balun Designs

Model 2112 - 2:1 (100 to 50 ohms) Balun 1.5 - 54 MHz - 2kW

$94.95

Model 2112 - 2:1 (100 to 50 ohms) Balun 1.5 - 54 MHz - 2kW

$94.95
SKU:
2112
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Product Description

Excellent broadband balun that can be used anywhere there is a need to transform 100 ohms balanced to 50 ohms unbalanced. Its most common use is at the feedpoint of quads and mono band loops allowing the elimination of matching networks.  This is a two stage unit with a 100 ohm balun wound on the large toroid for RF choking and balanced to unbalanced conversion.  The balun is then fed into a 2:1 unun for impedance reduction to 50 ohms for the feedline.


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Tests performed with AIM-4170c Network Analyzer and precision 200 ohm non inductive load.

Specifications



  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   Two separate windings. Large toroid is 1:1 balun designed at 100 ohms impedance.
  Winding is 14 gauge Thermaleze wire inserted in teflon tubes.
  Small core is trifilar wind of thermaleze wire creating a 2:1 Unun providing the impedance
  transformation from 100 ohms to 50 ohms unbalanced.
  Winding Material   Essex heavy build polyamideimide Allex 240 Winding Wire 
  Standard wall Teflon tubing.
  
  Power Rating   1.5 to 35 MHz - 2kW, 3kW intermittent.  35 to 54 MHz - 1.5kW.  
  All ratings based on resonant load. High SWR will reduce power handling ability.
  Useable Frequency   1.5 to 54 MHz
  Insertion Loss   Less than .03 - .04 db
  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  


Installation Notes