Audiovox NPC5000 User Manual And Mounting Instructions page 15

General Information
Unfavorable satellite positions in In valleys and in mountainous regions
conjunction with the position of the
installed GPS antenna.*
* In this case GPS reception may be obstructed for a longer period.
If the GPS antenna has been properly installed, sufficient GPS reception should be
present about 95 % of the driving time. If interference in the reception occurs more
frequently, improper mounting of the GPS antenna may be the cause. In this case, we
recommend you to contact your Audiovox dealer. However, the Audiovox Navigation
Computer is able to compensate reception problems over a period of a few minutes
without functional interference.
It is recommended that metallic window tinting or any kind of stickers not be
applied in the area surrounding the antenna.
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