The Garmin GA-35 WAAS GPS Antenna is an integral part of the overall system performance and integrity for a GPS/WAAS navigation system. The antenna's mounting location, surroundings and geometry can affect the navigation system's performance and/or availability. The GA-35 is sold with Garmin GTN-650 and Garmin GTN-750. The GA-35 used in conjunction with the GNS-400 and GNS-500 is manufactured for Garmin by AeroAntenna Technology under their part number AT575-93GW-TNCF-000-RG-27-NM.

The GA-35 frequency range is 1575 ± 10 mHz. The GA-35's coax cable interfaces to the receiving equipment which provides both signal back to the receiving equipment and power to the antenna preamp from the receiving equipment. The GA-35 requires a supply voltage of 4.5 ± 0.5 VDC and a supply current of 60 mA maximum. The GA-35 weighs 0.47 pounds approximately.