Telecommunication Division

Frequencies Supported

High Frequency 3`30MHz

High frequencies waves are reflected repeatedly between the ionosphere, which envelops the Earth, and the Earth's surface and can travel great distances. These frequencies are used widely for short wave radio broadcasting, maritime communications, aircraft on international routes, international broadcasting, and ham radio.

Shortwave Radio Broadcasting Antennas

Using the characteristics of short waves, DKK draws on its experience and knowledge to provide antennas for the high-frequency band, including curtain and doublet antennas for various applications such as shortwave radio broadcasting antennas for radio transmission abroad.

Photo: Shortwave Radio Broadcasting Antennas

Related Information

Business Offices

Information about DKK's business offices.


Products handled by DKK.

  • Business and Products
  • Telecommunication Division
  • Products
  • Technology
  • Network in Japan and Overseas
  • Frequencies Supported
  • Very Low Frequency
  • Low Frequency
  • Medium Frequency
  • High Frequency
  • Very High Frequency
  • Ultra High Frequency
  • Super High Frequency
  • Extremely High Frequency
  • Usage Scenarios
  • Radio Frequency Division