Furuno NAVNET 1933C-BB - Manual (Page 9)

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Three-or-more-unit NavNet system
HUB
Network Sounder
ETR-6/10N
ETR-30N
(option)
Radar Antenna Unit
OR
GPS Receiver GP-310B/320B
Radar Antenna Unit
OR
GPS Receiver GP-310B/320B
Sounder data
Radar data
Plotter data
Network Sounder
ETR-6/10N
ETR-30N
(option)
Facsimile
Receiver
FAX-30
(option)
Sounder data
Facsimile data
RADAR
or
PLOTTER
RADAR
or
PLOTTER
Three-or-more-unit NavNet system