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64 Additional Information
Operating System Support
Supplied Software (on CD-ROM)
GSM Performance and technical characteristics
Supported Operating
Systems
Microsoft Windows
98SE
Microsoft Windows
Me
Microsoft Windows
2000 (SP2)
Microsoft Windows
XP
Minimum PC
Specification
Processor size as recommended by Microsoft for
the version of Windows
®
in use
30 MB free disk space
Drivers Microsoft WHQL-approved for Windows 2000 and XP
GC79 Manager Status, SMS, Address Book and Settings
Documentation User Manual
AT Command Reference
Dimension GSM 900/
E-GSM 900
GSM 1800 GSM 1900
Frequency
Range
TX: 880 – 914 MHz
RX: 925 – 959 MHz
TX: 1710 – 1785 MHz
RX: 1805 – 1880 MHz
TX: 1850 – 1910 MHz
RX: 1930 – 1990 MHz
Channel
Spacing
200 kHz 200 kHz 200 kHz
Number of
Channels
175 Carriers * 8
(TDMA)
374 Carriers * 8
(TDMA)
299 Carriers * 8
(TDMA)
Modulation GMSK GMSK GMSK
TX Phase
Accuracy
5 degrees (RMS)
20 degrees (Peak)
5 degrees (RMS)
20 degrees (Peak)
5 degrees (RMS)
20 degrees (Peak)
Duplex
spacing
45 MHz 95 MHz 80 MHz
Frequency
Stability
0.1ppm 0.1ppm 0.1ppm
Transmitter
RF Power
Output
33 dBm Class 4
2 W peak
30 dBm Class 1
1 W peak
30 dBm Class 1
1 W peak
Transmitter
Output
Impedance
50Ω 50Ω 50Ω
Transmitter
Spurious
Emission
According to GSM
specification
According to GSM
specification
According to GSM
specification