HF100 Series – 10kW HF Wide Band Antenna Matching

The HF100 Series are 10 kW average power silicone cooled transformers suitable for communication or broadcast systems.

The units are housed in a finned cast aluminium tank which provides excellent natural convection cooling. Each casting is subjected to a double vacuum resin impregnation process which ensures complete sealing for the internal low loss silicone cooling oil.

  • Wide band 1.5 to 32 MHz
  • 10 kW average + 100% AM modulation
  • Suitable for communications or broadcast applications
  • Very high efficiency
  • All weather unprotected operation

High purity alumina ceramic insulators with arcing horns are fitted as standard and an integral static drain to earth provides additional protection against lightning induced high voltages.

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 HF100 is a high quality unit suitable for unprotected operation in any environment.

SpecificationData
Frequency1.5 – 32 MHz
ImpedanceSee table below
Power10 kW average + 100% am modulation
Insertion lossLess than 0.2 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″, 1 5/8″, 3 1/8″ EIA
Balance terminalsAlumina ceramic M10 thread
Temperature range-40ºC to +55ºC
Weight60kg gross
High voltage protectionArcing horns and internal static drain
ConfigurationCast aluminium case (LM25). Hermetically sealed. Epoxy paint finish.
CoolingNatural convection, silicone transformer oil, pressure relief valve fitted.
Shipping dimensions700 x 600 x 500 mm approx.
Balance Impedance (ohm)
Unbalanced impedance (ohm) 5075100200300370450600
50HF100-55 HF100-57 HF100-510 HF100-520 HF100-530 HF100-537 HF100-545 HF100-560
75HF100-75 HF100-77 HF100-710 HF100-720 HF100-730 HF100-737 HF100-745 HF100-760