Garmin WAAS GPS Antenna (Teardrop antenna).
Sold with Garmin GTN-650 and Garmin GTN-750.
Wide Area Augmentation System. So what is it?
Basically, it’s a system of satellites and ground stations that provide GPS signal corrections, giving you even better position accuracy.
How much better? Try an average of up to five times better. A WAAS-capable receiver can give you a position accuracy of better than 3 meters, 95% of the time. And you don’t have to purchase additional receiving equipment or pay service fees to use WAAS (link).
Antenna doubler (mounting plate / ground plane) available for fiberglass installations.