What Is a 900 MHz Wireless Transmission?
A radio frequency band is a division of radio frequencies.
Radio frequency band
Right!
- Chinese name
- Radio frequency band
- Foreign name
- Radio Band
- ELF Very Low Frequency
- 3 ~ 30Hz
- SLF ultra-low frequency
- 30 ~ 300Hz
- A radio frequency band is a division of radio frequencies.
- ELF extremely low frequency 3 ~ 30Hz
- SLF ultra-low frequency 30 ~ 300Hz
- ULF ultra-low frequency 300 ~ 3000Hz
- VLF
- HF10 ~ 30MHz
- VHF 30 ~ 100MHz
- A100 ~ 250MHz
- B250 ~ 500MHz
- C500 ~ 1000 MHz
- D1 ~ 2 GHz
- E2 ~ 3 GHz
- F3 ~ 4 GHz
- G4 ~ 6 GHz
- H6 ~ 8 GHz
- I8 ~ 10 GHz
- J10 ~ 20 GHz
- K20 ~ 40 GHz
- L40 ~ 60 GHz
- M60 ~ 100 GHz
- VLF VLF 3-30KHz Ultra-long wave 10Km-100Km Space wave main coast submarine communication; long-distance communication; ultra-long-distance navigation
- Low-frequency LF 30-300KHz Long wave 10Km-1Km Ground waves dominate transoceanic communications; medium-distance communications; underground rock formation communications; long-range navigation
- MF 0.3-3MHz medium wave 1Km-100m ground wave and sky wave marine communication; amateur
- The ISM frequency band is the industrial, scientific and medical frequency band. No license is required. It only needs to comply with a certain transmission power (generally lower than 1W), and it should not cause interference to other frequency bands.
- Originally the unlicensed radio frequency band (power not exceeding 1W) allocated by the US Federal Communications Commission (FCC). In the United States, it is divided into three frequency bands: industrial (902-928MHz), scientific research (2.42-2.4835GHz) and medical (5.725-5.850GHz). In Europe, part of the 900MHz frequency band is used for GSM communication, and the low frequency bands used for ISM are 868MHZ and 433MHz.
- 2.4GHz is the ISM band common to all countries. Therefore, wireless LAN, Bluetooth, ZigBee and other wireless networks can work in the 2.4GHz band.