9kW High Power Dual Core 1:1 Balun For Beams or Rotary Dipoles

Function

• 1/1 High Power Current BALUN for installation on the boom of a beam or on a top mast below a rotary dipole.
• Wideband version with superior common-mode current rejection.
• Drastically reduces coaxial cable sheath currents, thus avoiding RF feedback during transmission.
• Ensures that in RX mode, common-mode noise originated in your environment is effectively isolated from the signal path.

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. Stainless steel type 316 More info.
• Waterproof (IP64) and shock proof polycarbonate UV resistant enclosure. More info.
• Weight: +/- 500 g.

Electrical properties

• Conservatively rated 1/1 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:
• 9000 W PeP @ VSWR < 2.0/1 (ICAS)
• 5000 W PeP @ VSWR < 2.0/1 (CCS)
• 2500 W PeP @ VSWR < 2.0/1 (DIGITAL FT8/FT4)
• For ICAS and CCS power definitions, More info
  
  
• Deployable frequency range: 1.5 to 50 MHz.
• Low HF variant: optimized for 1,5 – 15 MHz.
• Mid HF variant: optimized for 3 – 30 MHz.
• High HF variant: optimized for 5 – 50 MHz.
  
  
• Insertion Loss: < 0.05 dB
• Intrinsic VSWR : < 1.15 / 1 at the frequency range edges.