1 must be approved by the local radio and television bureau, and the frequency and coverage of radio broadcasting must be approved. The specified frequency range is FM FM 76-87 MHz, which is the Japanese FM/ China campus FM band. Generally, any change of broadcasting frequency must be approved, and it is not allowed to change the band at will. Only FM 76-87 MHz.2 FM band can be used:

Voice of China 89. 1

The sound of music 107.8

Liaoning information 90.0

Dalian News 100.8

Dalian Finance 99. 1

Dalian University of Technology Radio 88.0 94.0

Dalian 93. 1

Dalian community 95.6

Dalian Maritime University Radio 97.8

Dalian Traffic 103.3

Dalian Music 106.7

Liaoning economy 87.5

Liaoning traffic 97.5

Dalian Sports? 105.73 x-ray frequency:

The frequency range of soft X-rays is (10 power of 17) to (10 power of/kloc-8) Hz, that is, 2 to 20 kiloelectron volts.

The frequency range of hard x-rays is (10 power of 18) to (19 power of 10) Hz, that is, 20 to 200 keV 4. Transistor (integrated circuit) radios produced in China mainly have the following three frequency bands: medium wave (MW) band: 525 ~ 65438+. The frequency range of short wave (SW) is 1.6~26Mz (the setting range of short wave is slightly different for various radios, and different manufacturers divide it into several short bands. Most of the civil broadcasting stations are concentrated in 6~ 18MHz. ); Frequency modulation (FM) frequency range: 87~ 108MHz.