
 GM-R800 GPS Receiver 
EverMore GM-R800 series is a high sensitivity GPS receiver , This product is based on  
Atmel chipset in 16 channel GPS receivers solution. The GPS module receiver will track 
up to 16 satellites at a time while providing fast time-to-first-fix and 1Hz navigation 
updates. It is far reaching capability meets the sensitivity & accuracy requirements of 
car navigation as well as other location-based applications, such as AVL system. PDA, 
Notebook operated navigation system. 
The GM-R800 design utilizes the latest surface mount technology and high level circuit 
integration to achieve superior performance while minimizing dimension and power 
consumption. This hardware capability combined with software intelligence makes the 
board easy to be integrated and used in all kinds of navigation applications or product s. 
The module communicates with application system via RS-232 level with NMEA-0183 
protocol. 
Features: 
z Atmel Chipset 16 Channels all in view tracking  
z High Sensitivity -158dBm   
z Reacquisition Time: 0.1 second  
z Support Standard NMEA-0183 at 9600 bps baud rate  
z DGPS : WAAS/EGNOS   
z On-board rechargeable battery sustained real-time clock and 
memory for fast satellite acquisition during power-up 
z Dimension/Weight: 56mmx53mmx22.5mm/96g 
EverMore Technology, Inc. 
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C.    http://www.emt.com.tw
 

 GM-R800 GPS Receiver 
Applications: 
z Land/Marine Navigation  
z Telematics  
z Fleet Management  
z Asset Tracking  
z Timing Reference 
Specification: 
Features Description 
General  L1 1575.42MHz, C/A code, 16-channel all in view 
tracking 
Sensitivity  -158 dBm (typical) 
Update Rate   1 Hz 
Accuracy  Position:  <15m(95%) without S/A 
Velocity:  0.1 m/sec without S/A 
Time:  ± 100ns synchronized to GPS time 
Acquisition  Cold start:  34sec average 
Warm start:  33sec average 
Hot start :   3.5sec average 
Dynamics  Altitude :  18,000m Max 
Velocity:   515m/s 
Acceleration: 4g Max 
Reacquisition Time  0.1 second  
Datum WGS-84  
Protocol NMEA-0183 V2.2 , Baud rate: 9600 , 8-None-1 
NMEA Message  Default : GGA, GSA, GSV, RMC ,GLL,ZDA,VTG 
Primary Power  5VDC ± 0.5Vp-p ripple 
DC Current  50 mA  
Operation Temperature  -40oC to +80oC 
Storg Temperatur e  -45oC to +85oC 
Operating Humidity  5% to 90% non-condensing 
Antenna Built-in Patch Antenna 
Interface Connector  Standard : PS/2 Female  
Optional :USB Cable or Car Charger for PDA 
Dimension/ Weight  56 mm x 53 mm x 22.5mm / 96g   
* Preliminary Specification, Subject To Change without Notice 
EverMore Technology, Inc. 
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C.    http://www.emt.com.tw