GSM 900:
Uplink frequency: 890 - 915 MHz
GSM 1800 :
Uplink frequency: 1710 - 1785 MHz
GSM 1900:
Uplink frequency: 1850 - 1910 MHz
uplink frequency-1710-1785MHz downlink frequency-1805-1880
How do you convert cellphone gsm frequency to another gsm frequency?"
In the CDMA technology It is either between your Handset and the Mobile Station. The dedicated frequency are allocated for u sending your data to the mobile station (Uplink freuency) and a dedicated frequency is reserved for you to receive your data from the mobile station (Downlink frequency)
So that they can both be used at the same time (i.e. full duplex) without interference.
Uplink translates also to Upload - where you send data to another destination.
1800mhz
Hi, For every GSM band there are Uplink and downlink frequencies. Example: GSM 900 TX: 880 MHz to 915 MHz is an uplink frequency range GSM 900 RX: 925 MHz to 960 MHz is a downlink frequency range Aloha, Maverick
Uplink frequency is a frequency that goes from the ground to the satellite. Downlink frequency goes from the satellite to the ground.
uplink frequency-1710-1785MHz downlink frequency-1805-1880
How do you convert cellphone gsm frequency to another gsm frequency?"
As the frequency increase its penetration power decreases.The signal travels a lesser distance.Hence for a perticular area more no of towers need to be erected in 1800/1900 than in 900MHZ for full coverage...Hence vodafone( 1800MHZ) has more towers per unit area than Idea Cellular ( 1800+900) ..... Band of 900 is from 890-915( uplink) 935-960Mhz( downlink).... Band of 1800 is from 1710-1785(uplink) and 1805-1880MHZ(Downlink).... Same property is followed here.....The uplink is lower ( MOBILE -BTS) than the downlink frequency (BTS-MOBILE)...so that this may help the uplink signal to travel futher without consuming much power...BTS due to its increased power ,has higher frequency to tavel the same distance....
12-14ghz
Uplink --> 890 MHz - 915 MHz Downlink --> 935 MHz - 960 MHz
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In the CDMA technology It is either between your Handset and the Mobile Station. The dedicated frequency are allocated for u sending your data to the mobile station (Uplink freuency) and a dedicated frequency is reserved for you to receive your data from the mobile station (Downlink frequency)
It varies - according to which system is in use. The related link to Wikipedia lists the uplink & downlink frequencies.
due to path loss : higher is the frequency higher is the patrh loss