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Semi-Delta Antenna

  • Codan - Semi-Delta Antenna
  • Codan - Semi-Delta Antenna
  • Codan - Semi-Delta Antenna

The Semi-delta Antenna is an economical broadband base station antenna suitable for short to medium distance HF communications.

The compact design of the antenna makes it suitable for installations that have limited space available.

The Semi-delta Antenna supports operation over the frequency range of 2 to 14 MHz, and is capable of full duty cycle voice and data operation at the rated power levels.

Key Features

  • Supports operation over the frequency range of 2 to 14 MHz

  • Capable of full duty cycle voice and data operation at the rated power levels

  • The antenna is an omni-directional antenna but has a good combination of high and low angle radiation to support both NVIS and longer distance HF communications

  • Eliminates the need for a separate antenna tuner unit, the antenna is connected to the transceiver via a single coaxial cable

  • Manufactured using materials designed for long service life, the Semi-delta is built to survive in harsh outdoor environments


  • Frequency Range

    2 to 14 MHz

  • Power rating

    400 W PEP (240 W Average) or 1000 W (600 W Average)

  • Nominal impedance

    50  Ω

  • VSWR

    Typically < 2:1

  • RF connector type

    UHF-type (400 W), N-type (1000 W)

  • Mast heights

    15 m mast and 1.5 to 2 m stub mast

  • Mast spacing

    20 m

  • Wind rating

    160 km/hr, no ice