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GSM 900, GSM 1800, GSM-R, CDMA, PCS.
Band selective repeaters can amplify the specific bandwidth of each operator.
This kind of repeaters allows signal enhancement for all active channels in the operator's band, and are used in high traffic areas.
Also, it's possible to make repeaters that amplify different band segments, that is to say, not adjacent stretches of band or split band.
GSM BAND SELECTIVE GENERAL FEATURES
- It doesn't require channels configuration. It can amplify all channels of the operator's working band.
- It's totally transparent to the BTS. The repeater doesn't interfere with the BTS and it doesn't need any configuration from the BTS.
- It allows frequency hopping.
- The level of power is divided between the different channels.
- It's compatible with the data transmission EDGE, GPRS, WAP.
- It complies with ETSI normative. It provides selective coverage without interferences to the competence.
BAND SELECTIVE REPEATERS SPECIFIC FEATURES
In GSM 850 the values to amplify are located between 824 - 849 MHz for the uplink (mobile-BTS communication) and 869 - 894 MHz for the downlink (BTS-mobile communication). GSM 850 is used in America .
In GSM 900 the values to amplify are located between 890 - 915 MHz for the uplink and 935 - 960 MHz for the downlink. The GSM 900 technology is the most extended standard.
EGSM 900 is the extended version of the 900 MHz band. The values to amplify are located between 880 – 915 MHz for the uplink and 925 – 960 MHz for the downlink.
In GSM 1800 the values to amplify are located between 1710 - 1785 MHz for the uplink and 1805 - 1880 MHz for the downlink.
In GSM 1900 the values to amplify are located between 1850 - 1910 MHz for the uplink and 1930 - 1990 MHz for the downlink. GSM 1900 is used in America .
In GSM R the values to amplify are located between 876-880 MHz for the uplink and 921 – 925 MHz for the downlink. The GSMR technology is the used one in Europe for railway communications.
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