Please refer to this page for the number of confirmed illegal radio stations in recent years at Ministry of Internal Affairs and Communications.
Among illegal radio stations, we would like to introduce characteristic ones.
Characteristics and examples of unlicensed radio stations
Unlicensed citizen band radio stations
Unlicensed citizen band radio stations that use a frequncy band between 26.1MHz and 28MHz.
CB radio equipment is defined in Article 4, item (ii) of the Radio Act and in Article 6, paragraph 3 of the enforcement regulation of the Act. The proper equipment is as follows;
- The equipment uses frequencies in A3E 26.968, 26.976, 27.04, 27.08, 27.088, 27.112, 27.12 or 27.144 MHz.
- Antenna power is under 0.5 w.
- It has a conformity mark.
Otherwise, the equipment is regarded as an unlicensed CB radio station.
In general, equipment is connected to an amplifier that increases aerial electricity line power. The equipment is often used overseas, which is inappropriate for the Act. Usually disrupts and interferes with fisheries radio, television reception, telephone lines, etc.
Unlicensed amateur radio stations
Mostly unlicensed amateur radio stations that use a frequency band between144MHz and 146MHz, 430MHz and 440MHz, or a freqency close to these ranges.
In many cases, these radio stations operate illegally without a license and outside of assigned frequencies, with remodelled outdated or for-export amateur radio equipment. The manufacturing industry hasset up J-mark voluntary controls, in which the structure of the product makes illegal remodelling impossible.
Usually disrupts and interferes with police, fire station and train station radio.
Unlicensed personal radio stations
Unlicensed personal radio stations that use a frequency band between 889MHz and 911MHz.
Mostly disrupts and interferes with MCA, cellular phones, and disaster prevention administrative radio.
FRS/GMRS
Many Family Radio Services (FRS) and General Radio Services (GMRS) use frequencies between 462.5 and 463 MHz and between 467.5 and 468 MHz, respectively.
Operating at these frequencies can cause interference or interference with radio communications for broadcasting and onboard communications.
In addition, it has been discovered that although it is called a Specified Low-Power Radio Stations (422 MHz band) widely used in Japan, it is actually radio stations conforming to foreign standards.