Public Radio Service
From Wikipedia, the free encyclopedia
Public Radio Service (PRS) (Chinese: 公众对讲机; pinyin: Gōngzhòng duìjiǎngjī) is a walkie-talkie personal radio service in the mainland of China, Hong Kong and Macau, but excluding Taiwan. It can be used without a license, and no fees are charged for the use of the frequencies.[1] It uses 409 MHz. It is also known as PRS409.[2] It is similar to the American and Canadian Family Radio Service (FRS) and PMR446 in the European Union.
| Channel | Frequency [MHz] |
|---|---|
| 1 | 409.7500 |
| 2 | 409.7625 |
| 3 | 409.7750 |
| 4 | 409.7875 |
| 5 | 409.8000 |
| 6 | 409.8125 |
| 7 | 409.8250 |
| 8 | 409.8375 |
| 9[a] | 409.8500 |
| 10 | 409.8625 |
| 11 | 409.8750 |
| 12 | 409.8875 |
| 13 | 409.9000 |
| 14 | 409.9125 |
| 15 | 409.9250 |
| 16 | 409.9375 |
| 17 | 409.9500 |
| 18 | 409.9625 |
| 19 | 409.9750 |
| 20 | 409.9875 |
Technical information
The PRS radio channels use narrow-band frequency modulation (NBFM) with a maximum deviation of 2.5 kHz. The channels are spaced at 12.5 kHz intervals. They are limited to 500 milliwatts effective radiated power.
PRS radios are not allowed to be used at airports and onboard aircraft. They are not allowed to be connected to the public switched telephone network or cellular network.[1]
See also
- 70-centimeter band
- CDCSS
- Continuous Tone-Coded Squelch System (CTCSS)
- Family Radio Service (the equivalent of PRS in Canada, the US, and some other countries)
- General Mobile Radio Service
- KDR 444
- LPD433
- Multi-Use Radio Service
- Personal radio service
- Personal radio service#Taiwan
- UHF CB
Notes
- The Hong Kong Radio Association lists this channel as a rescue channel.