APM PT-3 - Manual (Page 22)

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12. Technical Specifications
General
The unit utilizes GPS to receive time, date, longitude, latitude,
speed, direction data; GPR
Base
and GSM for communication and short messaging.
S for data exchange with Control
GSM
GSM/GPRS module Sim340 module
GSM 850 MHZ
GSM 1800 MHz (1 watt) Class 1
GSM 900 MHz (2 watt) Class 4
GSM 1900 MHZ
GSM Antenna Built-in
GPS
GPS module L1, C/A code receiver, 12 channels
Protocol NMEA-0183 V3.0, proprietary iTALK
binary protocol
GPS Antenna antenna Active Patch
Accuracy 10m-20m
Update rate Max 30sec. Configurable. Default setting
120 Second