The modernization of GPS navigation signals since February of 2010, have allowed manufacturer’s of GPS receivers to calculate position more precisely from the signals sent by GPS satellites above the earth. Before the modernization of GPS, the basic GPS measurement would yield only a position but not speed or direction.
Auto Meter, one of the leaders in automotive instrumentation, has adapted many of their gauges with GPS receivers that can yield the position, and many that can automatically derive velocity or direction of movement from two or more satellite position measurements.
For example, Auto Meter’s Ultra Lite GPS speedometer (Part #4480), combines the functions of a speedometer and GPS with Rally Nav display, making it perfect for rally-type applications.
Featuring Auto Meter’s full sweep precision stepper motor movement, the gauge also has resettable trip odometer and includes a 10Hz GPS antenna. The gauge displays time/date, cumulative distance, trip distance, GPS coordinates with heading info, compass and peak speed recall.
The AutoMeter GPS speedometers are designed to monitor speeds on or off road by interpreting data from the high-speed antenna. This technology eliminates the need to calibrate for tire size or gear changes.
Because it is all calculated by satellite signals, there is no need to interact with the transmission or drivetrain at all, which simplifies installation.
The gauges are built in the USA and tested to Auto Meter’s vibration and shock standards that have made them popular with enthusiasts.