With StarNavPilot the use of the GPS21 antenna is recommended:
Latest generation GPS
receiver.
Exceptional impact resistance.
Impervious to
immersion.
NMEA0183 connection
Made in France 
This high performance GPS receiver thanks to the use of a
latest generation GPS chipset ( See technical information ),
intended for outdoor installation (flat deck mounting or on a flat support) has
reinforced mechanical characteristics. Thanks to its case, robust, stocky and
small in size, it is designed to be waterproof to immersion, to be able to
withstand significant shocks, to withstand winds of over 300 km / h. It can also
be installed indoors thanks to its small footprint. It can be connected to any
device requiring to know the position, speed, route etc ... (multifunction
screen, multiplexer, radar ...) in NMEA0183. It comes with 10m of cable.
The use of this GPS is optimal with StarNavilot.
See
more information about the antenna GPS21
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