4/1 BALUN for for Windom Wire Antennas




  • 4/1 High Power Dual Core Current BALUN with two side installed eye bolts for strain relief of the antenna wires.
  • Real Guanella type DUAL CORE current BALUN.

Mechanical Characteristics

  • Optimized 61 mm diameter toroidal ferrites
  • Heat resistant teflon coaxial cable with high breakdown voltage.
  • Professional 50 Ohms N-connector or SO239 connector. (IP64 after sealing with self- vulcanizing tape or equivalent).
  • Stainless steel M6 antenna connections and Stainless steel eye bolts. Stainless steel type 316 More info.
  • Waterproof (IP64) and shock proof polycarbonate UV resistant enclosure. More info.
  • Weight: +/- 500 g.

Electrical properties

  • Conservatively rated 4/1 transmission line transformer.
  • Operation principle: Coaxial Common-Mode Choke.
  • Very high common-mode impedance. (Substantially higher than what’s obtainable with the “beads over coax” approach).
  • Max. power:

    2400 W PeP @ VSWR < 2.0/1 (ICAS)

    1200 W PeP @ VSWR < 2.0/1 (CCS)

    For ICAS and CCS power definitions, refer to Documentation

  • Deployable frequency range: 1.5 to 30 MHz.
  • Intrinsic VSWR : < 1.15 / 1 at the frequency range edges.