Raymarine RAY90 Installation And Operation Instruction Manual page 42

Antenna orientation
Radio waves are emitted from the wireless hub perpendicular to the orientation of the hub's antenna.
Keeping the antenna vertical should provide the best coverage for devices on the same plane as
your hub. Positioning the antenna horizontally will provide better coverage above and below the hub.
Installing the wireless hub antenna extension accessory
An extension cable accessory (A80541) is available for the wireless hub's antenna. Using the
extension the distance of the wireless hub's antenna can be extended a farther 5 m (16.4 ft).
1 Antenna (supplied with
the hub)
3 M3x10 fixing screws x 3
5 Mounting surface (14 mm
(0.55 in) diameter hole
required)
7 Split washer
1. Check the selected location for the Mounting plate, a clear flat area is required.
42
2 Nut
4 Mounting plate
6 5 m (16.4 ft) antenna extension cable
8 Wireless hub