What are recommended antenna mounting locations?
The best position for the antenna on a vehicle is to have it mounted in the center of the roof. The general rule is that it should have the best possible view of the sky at all times. Positions such as front or rear bumpers do not provide good performance, and mounting on a parcel shelf inside a window provides marginal performance because quite a bit of the view will be obscured by the roof. Fiberglass does not affect signal reception so on commercial vehicles mounting under fiberglass canopies and roof-top signs such as those on taxies provides good performance and also provides further shielding from the environment.
