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Due to an increase in unlicensed radio stations and illegal operations by licensed radio stations, there has been a rise in the level of disturbance and interference on legitimately used radio waves. Many complications have arisen from unwanted radio waves, such as malfunctions caused by the proliferation of digital and electronic equipment.

Damage caused by radio waves can, in some instances, be life threatening. The Ministry of Internal Affairs and Communications thus responds swiftly to eliminate the source of interference when an interference or disturbance report is filed.

Chart 1:Interference reports
   1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Interference related to important radio communications 520 428 459 493 460 420 404 541 494 585 429 566 592 674 684 512 532
Others 1,467 2,058 2,174 2,188 2,190 2,067 2,104 1,579 1,385 1,432 1,205 1,533 1,711 1,991 2,344 2,364 2,241
Total 1,987 2,486 2,633 2,681 2,650 2,487 2,508 2,120 1,879 2,017 1,634 2,099 2,303 2,665 3,028 2,876 2,773
2,773 interference reports were filed, 103 cases (9.6%) less compared to the previous year
Of those, 532 cases were related to important radio communications, 20 cases (3.9%) more compared to the previous year

(Note) "important radio commmunications" refer to telecommunication services, broadcast services, saving human life or assets or maintaining safety, weather services, electric services, railway services.

Chart2: Interference reports handled
   1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Violation of the Radio Regulatory Laws 87 74 51 48 10 18 47 7 7 1 2 1 10
Explanation(advice) 262 248 223 148 131 127 114 122 139 131 117 127 141
Extioction 738 639 584 500 526 534 514 639 652 629 667 667 689
Information 1,000 725 923 680 461 497 472 535 522 656 695 930 686
Other 494 303 666 484 670 755 585 718 835 986 1,264 1,454 1,246
Total 2,581 1,989 2,447 1,860 1,798 1,931 1,732 2,021 2,155 2,403 2,745 3,179 2,772
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Copyright(C)Telecommunications Bureau of the Ministry of Internal Affairs and Communications All Rights Reserved.