External Active Antenna - Lowrance AirMap 2000C Operation Instructions Manual

Drag the MMC from its slot by pressing against its label.
2. Hold unit facedown in left hand. With your right hand, press a finger
against the label of the MMC and drag it from the slot.
To add an MMC or SD Card
1. Remove battery compartment cover.
2. Hold the unit in one hand. Grasp the bottom edge of the MMC with
your other hand. The MMC label should be toward you.
3. Fit the top (notched) edge of the MMC into the MMC slot.
4. With your finger on the card's label, gently push the card into the slot.
Fit the MMC into its slot and then press it into position.
5. Replace the battery cover. (Remember to tighten the thumb screw.)

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 yoke or 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.
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