2 working materialsIn general, workmanship, good materials manufacturers, the production of GPS will be more secure. For example, the antenna directly affects the quality of star search of GPS, GPS of the shell is crucial to the radiation intensity, while the copycat GPS usually adopts manual workshop, quality service and customer service are not guaranteed and owners of the purchase, should pay attention to distinguish these key components of workmanship and materials.
2 working materialsIn general, workmanship, good materials manufacturers, the production of GPS will be more secure. For example, the antenna directly affects the quality of star search of GPS, GPS of the shell is crucial to the radiation intensity, while the copycat GPS usually adopts manual workshop, quality service and customer service are not guaranteed and owners of the purchase, should pay attention to distinguish these key components of workmanship and materials.
The owner when testing the GPS, can go to the city building dense area of the building or the courtyard look star search ability, if not to search satellite or frequent interrupt signal, it shows the unqualified.
