Lowrance electronic 500 GPS Receiver User Manual


 
15
External Active Antenna
A GPS antenna requires a clear view of the sky for optimum operation.
Inside the cockpit, your AirMap can sometimes maintain satellite lock
while sitting on the seat beside you, but we don't recommend this for
optimum performance.
Since the "view" is restricted to what can be seen through the window,
this operating mode will reduce position accuracy and will increase the
chance of losing satellite lock. Inside a plane, the unit operates best
with an external antenna mounted on the windshield or dash.
Attach AirMap antenna to windshield bracket with two screws.
You may achieve good results by simply placing the external antenna
on the top of the dash, at the base of the windshield. Many pilots like to
attach the antenna to the top of their instrument panel glare shields.
Depending on the surface, a strip of adhesive Velcro or a piece of the
rubber non-skid shelf liner material available in recreational vehicle
supply stores will help hold the antenna in place.
We recommend attaching the antenna to your windshield or other win-
dow. For this reason, The remote active antenna packaged with your
AirMap includes a suction-cup mount. Be sure to mount the antenna in
a location where it will not obstruct your view.