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Chapter 2 – The Antenna System
Antenna System for Embedded GSM Modems
The antenna system for use with the GSM modem includes a coax cable to interface between the UFL
connection on the modem and the antenna.
RF Specifications
GSM/EGSM RF Specifications
Frequency RX 869 to 894 MHz
Frequency TX 824 to 849 MHz
RF Power
Stand
Coax Cable
An optional 6" antenna cable (SMA Jack to UFL Plug) can be ordered from Multi-Tech Systems,
Inc.
Part Number
CASMA-UFL-1
CASMA-UFL-10
Cable Specifications
Cable Type:
Attenuation:
Connector Impedance: 50 ohm
Multi-Tech Systems, Inc. SocketModem GSM Hardware Guide for Developers
GSM 850
EGSM 900
925 to 960 MHz
880 to 915 MHz
2W at 12.5% duty
2W at 12.5% duty
cycle
cycle
Description
SMA to UFL COAX RF 6 inch cable (Single Pack)
SMA to UFL COAX RF 6 inch cable (Ten Pack)
Dia. 1.13mm Coaxial Cable
<1.0db
Chapter 2 – The Antenna System
GSM 1800
GSM 1900
1805 to 1880 MHz 1930 to 1990 MHz
1710 to 1785 MHz 1850 to 1910 MHz
1W at 12.5% duty
1W at 12.5% duty
cycle
cycle
12
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