Multi Tech Equipment GPRS USB manual Antenna/RF Specifications, Electrical Characteristics

Chapter 2 – Installation

Specifications

General Specifications

Mechanical Dimensions & Weight	4.3" L x 2.4" W x 0.94" H; 4.2 oz.
	(11 cm x 6.1 cm x 2.4 cm; 119 g)
Connectors & Fasteners	Antenna Connection type: SMA jack
	Interface Connector: USB Type B
	Phone Handset: Modular handset jack
	SIM receptacle: Standard 3V SIM receptacle
Operating Temperatures	-20° to +55°C
Storage Temperatures	-40° to +85°C
Humidity	Relative humidity 20% to 90% noncondensing
Certifications	CE Mark
	EMC: FCC Part 2, 15, 22, 24, EN 55022 & EN 55024
	Safety: UL 60950, EN 60950

Electrical Characteristics

Switching the GPRS modem on/off	The device is permanently powered when connected to the USB port.
Voltage	Voltage Range: 5 to 32V DC
	GND: 0V

Current Requirements

Parameters		GSM/GPRS 850/900	GSM/GPRS 1800/1900			Unit
		Typ.		Typ.
Input average supply current in comm. mode at Pmax	360		300		mA
Input average supply current in idle mode	30		30			mA

Antenna/RF Specifications

	GSM 850
Frequency RX	869 to 894 MHz
Frequency TX	824 to 849 MHz
RF Power Stand	2W at 12.5% duty cycle
Impedance	50 ohms
VSWR	<2
Typical Radiated Gain	0 dBi on azimuth plane

	GSM 1800		GSM 1900
Frequency RX	1805 to 1880 MHz		1930 to 1990 MHz
Frequency TX	1710 to 1785 MHz	1850 to 1910 MHz
RF Power Stand	1W at 12.5% duty cycle	1W at 12.5% duty cycle
Impedance	50 ohms
VSWR	<2
Typical Radiated Gain	0 dBi on azimuth plane

Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide 8