Telecommunication Division

Frequencies Supported

Very Low Frequency (VLF): Under 30 kHz

Very low frequencies have extremely long wavelengths and travel long distances along the Earth's surface. They can go over low mountains and can travel in water.

Very large transmission equipment is required for VLF transmission and DKK can design, manufacture, construct, and service extremely large antennas of several hundred meters in length.

Photo: Very Low Frequency Transmission 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