HF300 Series – 30 kW HF Wide Band Antenna Matching - SMC
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HF300 Series – 30kW HF Wide Band Antenna Matching

HF300 Series – 30 kW HF Wide Band Antenna Matching

The HF300 Series are our silicone cooled transformers, designed to handle an impressive 30 kW average power, ideal for communication or broadcast systems.

These transformers are securely housed in a cast aluminium case, vacuum impregnated with epoxy resin, and finished with epoxy paint, providing an extra layer of protection.

Key Features:

  • Broad band coverage from 1.5 to 32 MHz, ensuring compatibility across a wide range of frequencies.
  • Impressive power handling capabilities – 3 kW average power and 12 kW peak envelope power (PEP), meeting demanding requirements.
  • Solid encapsulation design guarantees all-weather resilience, ensuring reliability in any condition.
  • Constructed with a heavy-duty cast aluminium case, offering durability and longevity.
  • High purity alumina ceramic insulators with arcing horns come standard, delivering enhanced performance.
  • Equipped with an internal static drain to earth, providing additional protection against lightning-induced electromagnetic fields (EMFs).
  • For enhanced EMP-proof operation, no capacitors are used in the transformer circuit, ensuring reliable performance in critical scenarios.

The HF300 Series sets the standard for quality and reliability, delivering exceptional performance in the most demanding applications.

Wide band 1.5 – 32 MHz
EMP protection
Heavy duty
All-weather
Specification
Frequency
Impedance
Power
Insertion loss
VSWR
Balance ratio
Load VSWR
Coaxial connectors
Balance terminals
Temperature range
Weight
High voltage protection
Configuration
Shipping dimensions
Data
1.5 – 32 MHz
See table below
30 kW average + 100% am modulation
Less than 0.2 dB
Less than 1.2:1 (2 – 30 MHz), Less than 1.3:1 (1.5 – 32 MHz)
Greater than 26 dB
2.5:1 max.
3 1/8″ EIA
Alumina ceramic M12 thread
-40ºC to +55ºC
120kg gross
Arcing horns and internal static drain
Cast aluminium case (LM25). Hermetically sealed. Epoxy paint finish.
1000 x 700 x 550 mm approx.

Balance Impedance (ohm)

Unbalanced impedance (ohm)
50
75
100
200
300
370
450
600
50
HF300-55
HF300-57
HF300-510
HF300-520
HF300-530
HF300-537
HF300-545
HF300-560
75
HF300-75
HF300-77
HF300-710
HF300-720
HF300-730
HF300-737
HF300-745
HF300-760

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