8
Concerning of Poor GPS Signal
It is possible unable to receive GPS signal or signal low in these places:
Inside a tunnel. GPS-signal is blocked.
Beside buildings. GPS-signal is low
or disturbed.
Covers above. GPS-signal is blocked.
Inside a forest or to many covers.
GPS-signal is low or disturbed.
Inside buildings. GPS-signal is blocked.
If you use the USB GPS Receiver inside the car, some anti-sunlight windscreen film will make the GPS signal degraded or signal blank.
GPS satellite is owned by America military; sometimes they will tune-down the accuracy by some reason. In such cases, the GPS
position may not fixed exactly.