9kW High Power Dual Core 1:1 Balun for Wire Antennas

All our products are handmade, and fulfilment times may vary depending on order volume. Please allow 2–3 weeks for your order to be completed and shipped.

Function

• 1/1 High Power Current BALUN with two side installed eye bolts for strain relief of the antenna wires.
• 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 dual core 61 mm diameter toroidal ferrites  (extra core for 9kW support)
• 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.
• Waterproofed (IP64) and shock proof polycarbonate UV resistant enclosure. More info. (larger valve to support larger temperature differences) 
• 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. 

General BALUN user installation guide & safety instructions