GSM-850 and GSM-1900
GSM-850 and GSM-1900 are used in Argentina, Brazil, Canada, the United States and many other countries in the Americas.
- GSM-850 uses 824–849 MHz to send information from the mobile station to the base station (uplink) and 869–894 MHz for the other direction (downlink). Channel numbers are 128 to 251.
- GSM-850 is also sometimes called GSM-800 because this frequency range was known as the "800 MHz band" (for simplification) when it was first allocated for AMPS in the United States in 1983.
- The term Cellular is sometimes used to describe the 850 MHz band, because the original analog cellular mobile communication system was allocated in this spectrum.
- GSM-1900 uses 1,850–1,910 MHz to send information from the mobile station to the base station (uplink) and 1,930–1,990 MHz for the other direction (downlink). Channel numbers are 512 to 810.
- PCS is the original name in North America for the 1,900 MHz band. It is an initialism for Personal Communications Service.
Read more about this topic: GSM Frequency Bands, GSM Frequency Bands