Raymarine 300 - Manual (Page 123)

Installation Templates T-1
GPS Antenna Mounting Template
Note: Access to the underside of the mounting surface must be available
to allow for secure fixing.
Cable Exit Channel
18mm
(0.7in)
6mm (0.25") dia.
for cable only
19mm (0.75") dia.
for NMEA plug
6mm (0.25") dia.
2 positions
18mm (0.7in)
36mm (1.4in)
36mm (1.4in)
D4194-1