Public Radio Service
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Public Radio Service(PRS) is a walkie-talkie personal radio service service in China. People can use it without licenses. It use 409 MHz. It is also known as PRS409.  It is similar to the American Family Radio Service (FRS) and PMR446 in the European Union.
The PRS radios use narrow-band frequency modulation (NBFM) with a maximum deviation of 2.5 kilohertz. The channels are spaced at 12.5 kilohertz intervals. They are limited to 500 milliwatts effective radiated power.
List of PRS409 channels
- General Mobile Radio Service
- Multi-Use Radio Service
- 70-centimeter band
- KDR 444
- UHF CB
- Personal radio service
- Continuous Tone-Coded Squelch System (CTCSS)