Furuno 1724C - Manual (Page 13)

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Three-or-more-unit NavNet system (Max. 4 display units)
Antenna Unit GP-310B/320B
HUB
Network sounder
ETR-6/10N
Sounder data
Radar data
Plotter data
Note: The picture disappears
10 seconds after the NavNet
cable is disconnected from a
"sub" NavNet display unit.
Three-or-more-unit NavNet system