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Garmin G5 User's Manual
190-02072-00 Rev. B
27
Installation Manual
Installation Manual
Pilot's Guide
Index
1.4 GPS ANTENNA INSTALLATION
This section contains general information as well as installation information for
GPS antennas. Garmin recommends the antennas shown in Table 1-8. However, any
equivalent antenna that meets the specifications listed in Table 1-9 will work with the
G5.
The G5 can receive GPS position information using the unit's internal antenna or
by connecting an external antenna. It is recommended to verify the ability of the G5
to receive GPS information via the unit's internal antenna as GPS reception quality
is dependent upon the installation. The G5 will share GPS information with any
connected GDU 37X or GDU 4XX.
The G5 can additionally receive GPS position information from a GPS 20A,
GDU 37X, or GDU 4XX. A minimum of one GPS antenna is required for G5 installations
receiving GPS information from another LRU. Additional GPS antennas may be used
for redundancy, but are not required.
A GPS 20A (and connected GPS/WAAS antenna) can be used as the sole GPS source
for a G3X system, however it is recommended to also install a GPS antenna on a G5
or GDU 37X/4XX for redundancy. If the G5's GPS receiver is not used in a particular
installation, it may be disabled in configuration mode (see Section 1.7.4.11).
The GPS receiver in the G5 is WAAS enabled, therefore, any antenna meeting the
specifications in Table 1-9 is capable of receiving both GPS and WAAS signals when
connected to the G5. However, only the GA35 and GA36 meet the requirements of
TSO/ETSO-C144.