GSM/GPRS/3G Modules 
SIMCOM SIM548C GSM/GPRS+GPS Module
SIM548C module is a compact Quad-Band GSM/GPRS-enabled module that is also equipped with GPS technology for satellite navigation. The compact design of the SIM548C makes it easy to integrate GSM/GPRS & GPS as an all-in-one solution. You will save significantly both time and cost for the integration of additional hardware components.
Product Description
General features
Quad-Band GSM 850/900/1800/1900MHz
GPRS multi-slot class 10
GPRS mobile station class B
Compliant to GSM phase 2/2+
- Class 4(2W @ GSM850/900MHz)
- Class 1(1W @ GSM1800/1900MHz)
Control via AT commands (GSM 07.07 and 07.05 and SIMCom enhanced AT commands)
SIM application tool kit
Low power consumption
Supply voltage range 3.4-4.5 V
Normal operation temperature: -30°C to +80°C
Restricted operation temperature: -40°C to -30°C and +80°C to +85°C
Storage temperature: -45°C to +90°C
Dimension: 50mm x 33mm x 8.8mm
Specifications for GPS
Receiver 20 channels, L1 1575.42 MHz, C/A code 1,023 MHz chip rate
Accuracy Position 2.5 m CEP
without SA/Velocity 0.1 m/s,
without SA/Time 1 μs synchronized to GPS time
Position with DGPS/SBAS: 2.0 CEP
Date WGS-84
Acquisition rate (TTFF defined at 95% of first position local station)
Hot start < 1 s, average, open sky
Warm start: 35 s, average, open sky
Cold start: 35 s, average, open sky
Support AGPS
Operating voltage 3.3 V DC ±5%
Low power consumption 160mW at 3.3 V (full power)
Protocols
NMEA-0183
SiRF binary
RTCM SC-104
Crystal oscillator (TCXO), temperature compensated with frequency stability of ±0.5 ppm
Memory 4 Mb flash and 1Mb SRAM
Interfaces
60-pin DIP connector
Interface to external SIM 3V or 1.8V
Dual analog audio interface
AT commands via serial interface
Embedded SIM card holder
LCD Interface
RTC Backup
Charge interface
Serial interface and Debug interface
Dual serial interfaces for GPS
Two separate antenna connectors for GSM/GPRS & GPS and two antenna pads for GSM/GPRS & GPS
