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Chapter 1 – Product Description and Specifications
10
Multi-Tech Systems, Inc. MultiModem rCell User Guide
RF Specifications
GSM 850
EGSM 900
GSM 1800
GSM 1900
Frequency RX
869 to 894 MHz
925 to 960 MHz
1805 to 1800 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 Specifications
GSM/EGSM Antenna Requirements/Specifications
Frequency Range:
824 – 960 MHz / 1710 – 1990 MHz
Impedance: 50
Ohms
VSWR:
<2.0:1
Typical Radiated Gain:
3 dBi on azimuth plane
Radiation:
Omni
Polarization:
Vertical
Wave:
Half Wave Dipole
Antennas Available from Multi-Tech Systems, Inc.
Description
Part
Number
Hinged Right Angle 900/1800 MHz Cellular Modem Antenna
ANF1-1HRA
Hinged Right Angle 800/1900 MHz Cellular Modem Antenna
ANF21HRA
Hinged Right Angle 850/900/1800/1900 MHz Cellular Modem Antenna ANQB-1HRA
PTCRB Requirements Note
There cannot be any alteration to the authorized antenna system. The antenna system must be the same type with similar in-
band and out-of-ban radiation patterns and maintain the same specifications.
FCC Requirements Note
The antenna gain, including cable loss, must not exceed 3.0 dBi at 1900 MHz / 1.6 dBi at 850 MHz for mobile operating
configurations and 7.0 dBi at 1900 MHz / 2.3 dBi at 850 MHz for fixed mounted operations, as defined in 2.1091 and 1.1307 of
the rules for satisfying RF exposure compliance.
RS232 9-Pin Functions of the Female End Connector
The following table explains the pin functions.
External Power
Serial Cable
Female Connector
Signal
IN/OUT
Pin 1 CD
O
Pin 2 RX
O
Pin 3 TX
I
Pin 4 DTR
I
Pin 5 GND
--
Pin 6 DSR
O
Pin 7 RTS
I
Pin 8 CTS
O
Pin 9 RI
O