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HF

High Frequency | Frequencies (*): 3MHz-30MHz
English

Sources and Uses

  • Communication with no line of vision
    • Aviation communication  air to ground over the horizon (**)
    • Over the horizon radar
  • Maritime communication, sea to shore control stations
  • Emergency communications during distress at sea (**)

 
  • Global Maritime Distress and Safety System – GMDSS
  • Electronic identification and tracking systems – tags and theft-prevention devices (Radio Frequency Identification - RFID) (**)
  • Amateur radio (**)

(*) According to the International Telecommunications Union (ITU) classification
(**) In several frequency ranges

 
Long-distance communication from a high mountain
Long-distance communication from a high mountain
RF radar (old generation)
RF radar (old generation)
Communications and control center on ship
Communications and control center on ship
Maritime communications – coast guard
Maritime communications – coast guard
Radio Frequency Identification (RFID) circuit
Radio Frequency Identification (RFID) circuit
Communication over the horizon
Communication over the horizon