What is the frequency band for the 900 MHz GSM cellular band?
GSM-900 uses 890 – 915 MHz to send information from the Mobile Station to the Base Transceiver Station (BTS) (This is the “uplink”) and 935 – 960 MHz for the other direction (downlink), providing 124 RF channels spaced at 200 kHz. Duplex spacing of 45 MHz is used.
What is Earfcn in LTE?
EARFCN stands for E-UTRA Absolute Radio Frequency Channel Number.In LTE, the carrier frequency in the uplink and downlink is designated by EARFCN, which ranges between 0-65535. EARFCN uniquely identify the LTE band and carrier frequency. EARFCN is independent of channel bandwidth.
What is Band 3 in network?
The majority of the world’s network operators have commercially launched LTE systems in 1800 MHz spectrum (LTE1800 – 3GPP band 3). B3 (1800 MHz) deployments represent greater than 48% of all LTE networks globally. B3 (1800 MHz) is used globally in approximately 47% of 4G LTE networks.
How many carriers does GSM 900 have?
As mentioned earlier, in the GSM 900 system, the total available number of uplink and downlink carriers = 25 MHz/200 kHz = 125.
What is the frequency of band 3?
Frequency Band of 3GPP LTE FDD mode
| Band No. | Uplink Frequency band | Downlink Frequency band |
|---|---|---|
| 1 | 1920 MHz – 1980 MHz | 2110 MHz – 2170 MHz |
| 2 | 1850 MHz – 1910 MHz | 1930 MHz – 1990 MHz |
| 3 | 1710 MHz – 1785 MHz | 1805 MHz – 1880 MHz |
| 4 | 1710 MHz – 1755 MHz | 2110 MHz – 2155 MHz |
What frequency is bad for humans?
Scientific evidence suggests that cancer is not only linked to mobile phone radiation and that other factors also may be involved in its development. Most mobile operators use from radiofrequency waves in the range up 300 MHz to 3 GHz that can be harmful for human health (1).
