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Appendix B – Cellular Information

MultiModem Cell User Guide 37

GSM/EGSM RF Specifications

GSM 850

EGSM 900

GSM 1800

GSM 1900

Frequency RX

869 to 894 MHz

925 to 960 MHz

1805 to 1880 MHz

1930 to 1990 MHz

Frequency TX

824 to 849 MHz

880 to 915 MHz

1710 to 1785 MHz

1850 to 1910 MHz

GSM Antenna Requirements/Specifications

Frequency Range

824 – 960 MHz / 1710 – 1990 MHz

Impedance

50 Ohms

VSWR

VSWR shall not exceed 2.0:1 at any point across the bands of

operation

Typical Radiated Gain

3 dBi on azimuth plane

Radiation

Omni-directional

Polarization

Vertical

Antenna Loss

Free space not to exceed -3db

TRP/TIS

Including cable loss the total radiate power (TRP) at the antenna

shall be no less than +22/24.5 dBm for 850/1900 MHz

respectively, and the total isotropic sensitivity (TIS) at the antenna

shall be no less than -99/101.5 dBm for 850/1900 MHz

respectively.

PTCRB Requirements for the Antenna

There cannot be any alteration to the authorized antenna system. The antenna system must maintain the same

specifications. The antenna must be the same type, with similar in-band and out-of-band radiation patterns.

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Wavecom G2 Betriebsanweisung Seite 37