User's Manual

Part 1 − Universal Socket Connectivity Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342K) 33
Wireless Information
Antenna System for Wireless Devices
The antenna system for use with Multi-Tech modems built into your products must include a coax cable to interface
between UFL or MMCX connection on the modem and the antenna itself.
RF Specifications
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
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
CDMA RF Specifications
CDMA 800 CDMA 1900
Frequency RX 869 to 894 MHz 1930 to 1990 MHz
Frequency TX 824 to 849 MHz 1850 to 1910 MHz
MMCX-to-SMA and MMCX to RSMA Coax Cable
This cable shown below is included in the Developer Kit for the CDMA, EDGE SocketModems, and the
SocketWireless Bluetooth.
Cable Specifications
Cable Type:
Coax Cable
Attenuation:
<1.0db
Connector Impedance:
50 ohm
An optional antenna cable (SMA to MMCX) 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-to-SMA Connector
An antenna with an SMA connector may be directly connected to a SocketModem GPRS/CDMA through a
mating MMCX-to-SMA adapter.
SMA-to-MMCX Connector Available from Amphenol
Amphenol
http://www.amphenol.com/
Order No: 908-31100