Transmitters

HF Station

  • Standing Wave Ratio (SWR) bridge indicates impedance match between the antenna system and transmitter.  Ideally should be 1:1.  In this condition there is maximum forward power and minimum reflected power
  • Low Pass Filter cuts off frequencies above 30MHz suppressing harmonic unwanted radiation
  • Dummy load (50 ohm) is used to test and tune the transmitter without radiating a signal