about gsm frequency - GSM-Forum

krishnainfotec · 08-26-2004, 10:59

in india 900&1800 mhz uses why using 2 frequency

nonu_don · 08-26-2004, 11:34

900 is better than 1800mhz, earlier providers had 900 mhz only netwrok, but now advanced and move to more clearer and faster 1800mhz network.

watusi2 · 08-27-2004, 04:16

Bec Most Cell Uses Dual Band.....sometimes Tri Band

spectrum · 08-27-2004, 11:06

Because of congestion, interference and intermod probs associated with single band @ 900, gsm base stations now use dual bands, one set of frequencies to transmit (could be in 900 band) and another set to receive in the other band (1800) or the other way round.
This arrangement has improved capacity, less congestion and better bandwidth to tx and rx better signal quality

08-26-2004, 10:59	#1 (permalink)
krishnainfotec Freak Poster Join Date: Aug 2004 Age: 47 Posts: 110 Member: 78347 Status: Offline Thanks Meter: 2	about gsm frequency in india 900&1800 mhz uses why using 2 frequency

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08-26-2004, 11:34	#2 (permalink)
nonu_don No Life Poster Join Date: Feb 2003 Location: ..::India::.. Age: 40 Posts: 3,809 Member: 22538 Status: Offline Sonork: 100.67180 Thanks Meter: 2,252	900 is better than 1800mhz, earlier providers had 900 mhz only netwrok, but now advanced and move to more clearer and faster 1800mhz network.

08-27-2004, 04:16	#3 (permalink)
watusi2 Freak Poster Join Date: Jul 2004 Age: 52 Posts: 126 Member: 75583 Status: Offline Thanks Meter: 6	Bec Most Cell Uses Dual Band.....sometimes Tri Band

08-27-2004, 11:06	#4 (permalink)
spectrum No Life Poster Join Date: Oct 2002 Posts: 1,126 Member: 17330 Status: Offline Thanks Meter: 15	Because of congestion, interference and intermod probs associated with single band @ 900, gsm base stations now use dual bands, one set of frequencies to transmit (could be in 900 band) and another set to receive in the other band (1800) or the other way round. This arrangement has improved capacity, less congestion and better bandwidth to tx and rx better signal quality