High Power 4/1 Dual Core Current BALUN for Windom wire antennas and KLM KT34 Yagis.

The average feedpoint impedance of a Windom antenna, installed not higer than 10m above ground, is closer to 200 Ohms than 300 Ohms.

This means that in most cases a 4/1 balun is more suitable than a 6/1 version.

Because the Windom antenna is fed off-center, common-mode currents on the feedline outer skirt are likely to occur, so a current balun is abolutely nesessary.

We supply real Guanella type DUAL CORE current baluns with the following characteristics:

• Frequency range: 1.5 to 30 MHz.
• 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 “TECH INFO” tab.
• Intrinsic VSWR: < 1.15 / 1 at the frequency range edges.
• Teflon insulated windings.

From August 1st 2018 on, all BALUNs are built into UL508A certified polycarbonate enclosures provided with flanges for convenient installation .

See also “General Conditions for Safe use of ON7FU Ferrite Applications products” under the tab “LEGAL INFO”.

Price: 143 Euro. (Incl. VAT)

• Option: N-connector instead of SO239 connector : + 7 Euro.