HF30 Series – 3kW HF Wide Band Antenna Matching

The HF30 Series of antenna matching transformers are solid encapsulated heavy duty units suitable for the most arduous environmental conditions and designed for installation in any orientation.

The transformers are housed in a cast aluminium case, vacuum impregnated with epoxy resin and finished in epoxy paint for added protection. High purity alumina ceramic insulators with arcing horns are fitted as standard. An internal static drain to earth provides additional protection against lightning induced EMF’s.

  • Wide band 1.5 to 32 MHz
  • 3 kW average, 12kW PEP
  • All weather solid encapsulated
  • Heavy duty cast aluminum case

For added EMP proof operation, no capacitors are used in the transformer circuit. A wide selection of unbalanced and balanced impedance ratios are available to complement most antenna configurations and enquiries for non-standard arrangements are welcome.

The HF30 is a unit of the highest quality and reliability.

Frequency1.5 – 32 MHz
ImpedanceSee table below
Power3 kW average, 12kW peak
Insertion lossLess than 0.3 dB
VSWRLess than 1.2:1 (2 – 30 MHz), Less than 1.3:1 (1.5 – 32 MHz)
Balance ratioGreater than 26 dB
Load VSWR2.5:1 max.
Coaxial connectors7/8″EIA (Others on request)
Balance terminalsAlumina ceramic M10 thread
Temperature range-40ºC to +55ºC
Weight14kg gross
High voltage protectionArcing horns and internal static drain (NB No internal capacitors fitted.)
ConfigurationCast aluminium case (LM25). Hermetically sealed. Epoxy paint finish.
Shipping dimensions320 x 300 x 140 mm approx.
Balance Impedance (ohm)
Unbalanced impedance (ohm) 5075100200300450600
50HF30-55 HF30-57 HF30-510 HF30-520 HF30-530 HF30-545 HF30-560
75HF30-75 HF30-77 HF30-710 HF30-720 HF30-730 HF30-745 HF30-760

Download the technical data sheet for this product

The data sheet contains:

◉  Complete technical specifications, including input/output, temperature range, frequency, power and more
  Technical drawings and size dimensions

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