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Matching Transformers RF Communications

HF4 Transformer Series - 400 watts Ave power

HF4 Series 400 Watt HF Wide Band Antenna Matching

Quick Information

Matching Transformers

Balance Ratio

Balance Terminals

Coaxial Connectors

Configuration

Frequency

High Voltage Protection

Impedance

Insertion Loss

Load VSWR

Power

Shipping Dimensions

Temperature Range

VSWR

Weight (kg)

HF4 Series 400 Watt HF Wide Band Antenna Matching

Balance Ratio: > 26 dB

Balance Terminals: Alumina ceramic M6 thread

Coaxial Connectors: 'N' type (others on request)

Configuration: Cast aluminium case (LM25). Hermetically sealed. Epoxy paint finish.

Frequency: 1.5 - 32MHz

High Voltage Protection: Arcing horns and internal static drain (NB No internal capacitors fitted.)

Impedance: See table below

Insertion Loss: <0.3 dB

Load VSWR: 2.5 : 1 max

Power: 400 Watt average, 1600 Watt peak

Shipping Dimensions: 0.22m x 0.15m x 0.12m

Temperature Range: -35°C to +55°C

VSWR: <1.2 : 1 (2 - 30MHz), <1.3 : 1 (1.5 - 32MHz)

	Balanced Impedance (ohm)
Unbalanced Impedance (ohm)	50	75	200	300	370	450	600
50	HF4-55	HF4-57	HF4-520	HF4-530	HF4-537	HF4-545	HF4-560
75	HF4-75	HF4-77	HF4-720	HF4-730	HF4-737	HF4-745	HF4-760

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