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Evermore GT-800BT GPS

Nov 7,2008 0

5. GPS Receiver Tests

 

Review Pages

1. Features, specifications
2. The package
3. Using the device
4. Evermore Moremapper Software
5. GPS Receiver Tests
6. Final Words

 

We paired all the tested GPS receivers with an Asus A6JA laptop, via the BT protocol. Each device has its own Serial port mapping under Windows. We placed the two GPS receivers side by side at the dashboard of our car. The same environmental conditions are valid for both receivers (night, clear sky, 25° Celsius ).

We recorded all the produced data for a preselected route with VisualGPS and later analyzed it with GPSLog. We couldn't measure the TTFF tests ("Time to First Fix" which is the time it takes for a GPS to determine its current position), since there isn't such a software under Windows XP.

 
Globalsat BT-338
Evermore GT-800BT
Fix%
Invalid
0
0
2D
0
1.6

3D

100
98.4
Satellites
Average (in view)
8
9.69
Average (in use)
6.70
6.81
Average Signal Level (dB)
Maximum per Satellite
46.63
46.00
Average per Satellite
37.71
35.53

Comparing the SirfIII Globalsat BT-338 with the Evermore GT-800BT, we see that the Evermore device didn't maintain a 3D fix for the whole time, which is not so good. On the bright side, it always had more satellites in view/use compared to the Globalsat.. Lastly, the Average Signal levels for both GPS receivers were very high.

- Indoor Sensitivity

We placed both receivers inside a house and one meter away from the door. Both GPS receivers had a 3D fix, with the Globalsat device to perform slightly better.

 

Review Pages

1. Features, specifications
2. The package
3. Using the device
4. Evermore Moremapper Software
5. GPS Receiver Tests
6. Final Words

 

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