Appendix A – Peripheral Devices
Multi-Tech Systems, Inc. MMCModem GPRS Developer’s Guide (S000445D)
34
Appendix A – Peripheral Devices
Antenna System
The antenna system for use with Multi-Tech MMCModem includes a coax cable to interface between UFL
or MMCX connection on the modem and the antenna.
RF Specifications
GSM 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
RF Power Stand
2W at 12.5% duty cycle 2W at 12.5% duty cycle 1W at 12.5% duty cycle 1W at 12.5% duty cycle
Antenna Cable
An optional 6” antenna cable (SMA Jack to MMCX Plug) can be ordered from Multi-Tech Systems,
Inc.
Part Number
Description
CASMA-MMCX-1
SMA to MMCX COAX RF 6 inch cable (Single Pack)
CASMA-MMCX-10
SMA to MMCX COAX RF 6 inch cable (Ten Pack)
MMCX Plug
Cable Specifications
Cable Type:
G-178/u
Attenuation: <1.0db
Connector Impedance: 50 ohm