AT504 GG
Choke Ring Antenna for GNSS Reference NetworksThis
International GNSS Service (IGS) Choke Ring Antenna designed by NASA/JPL and
machined to Leica Geosystems' exacting standards, features superior multipath
rejection with uncompromised phase center stability (<1mm) and is resistant to
RF jamming.
The Choke Ring is the required
standard for permanent GNSS networks around the world. Available with Leica
Geosystems radome for weather protection.
The antenna is available as AT504 GG
(GPS/GLONASS) version. The AT504 (GPS-only) is no longer available.