GSM Frequecy Band

GSM Frequecy Band

GSM FREQUENCY BAND

GSM frequency bands are the radio spectrum frequencies designated by the ITU for the operation of the GSM phones.

There are four GSM bands: 850, 900, 1800, and 1900. The most dominant bands in the United States are 850 and 1900, while the other two are used more in the rest of the world. And Another less common GSM version is GSM-450.

Well, different sites are compatible with different GSM frequency bands.Example Vodafone INDIA uses both 800 as well as 1800 Frequency Band for its Mobile Operation.

There are fourteen bands defined in 3GPP TS 45.005, which succeeded 3GPP TS 05.05:

System	Band	Uplink (MHz)	Downlink (MHz)	Channel Number
T-GSM-380	380	380.2–389.8	390.2–399.8	Dynamic
T-GSM-410	410	410.2–419.8	420.2–429.8	Dynamic
GSM-450	450	450.4–457.6	460.4–467.6	259–293
GSM-480	480	478.8–486.0	488.8–496.0	306–340
GSM-710	710	698.0–716.0	728.0–746.0	Dynamic
GSM-750	750	747.0–762.0	777.0–792.0	438–511
T-GSM-810	810	806.0–821.0	851.0–866.0	Dynamic
GSM-850	850	824.0–849.0	869.0–894.0	128–251
P-GSM-900	900	890.0–915.0	935.0–960.0	1–124
E-GSM-900	900	880.0–915.0	925.0–960.0	975–1023, 0-124
R-GSM-900	900	876.0–915.0	921.0–960.0	955–1023, 0-124
T-GSM-900	900	870.4–876.0	915.4–921.0	Dynamic
DCS-1800	1800	1710.0–1785.0	1805.0–1880.0	512–885
PCS-1900	1900	1850.0–1910.0	1930.0–1990.0	512–810

Frequency bands and channel arrangement

Standard or primary GSM 900 Band, P-GSM:

· 890 - 915 MHz: mobile transmit, base receive

· 935 - 960 MHz: base transmit, mobile receive

Extended GSM 900 Band, E-GSM (includes Standard GSM 900 band):

· 880 - 915 MHz: mobile transmit, base receive

· 925 - 960 MHz: base transmit, mobile receive

Railways GSM 900 Band, R-GSM (includes Standard and Extended GSM 900 Band);

· 876 - 915 MHz: mobile transmit, base receive

· 921 - 960 MHz: base transmit, mobile receive

DCS 1 800 Band:

· 1 710 - 1 785 MHz: mobile transmit, base receive

· 1 805 - 1 880 MHz: base transmit, mobile receive

NOTE: The term GSM 900 is used for any GSM system which operates in any 900 MHz band.

NOTE: The BTS may cover the complete band, or the BTS capabilities may be restricted to a subset only, depending on the operator needs.

DUAL BAND

Dual band refers to the capability of GSM network infrastructure and handsets to operate across two frequency bands e.g. 850/1900 MHz

TRI BAND

A Tri Band phone will operate on three different frequencies depending on the available network. e.g. 850/1800/1900 MHz.

Quad-band mobile

A quad-band mobile phone is operational on any of the four GSM frequencies - e.g. 850/900/1800/1900 MHz.

EXTERNAL LINKS

· GSM Bands information by country

· GSM World Coverage Map and GSM Country List

· GSM frequency bands