Installation Manual

27
CONFIDENTIAL UNDER NON-DISCLOSURE AGREEMENT (NDA)
Rev A1
Document:
WSS 4G Aircraft Installation Manual 750-
00003-00 Reva1.Docx
July -30
2020
The FDQ antenna is a transmit and receive antenna and should be mounted in a
location with visibility to all directions when in flight. Optimal performance is often
achieved between 10-20 inches from the centerline between the front landing gear and
the main wing section. Alternatively, the FDQ can be placed along the centerline aft of
the wings such that the base of the antenna aligns with the underside of the wings. The
FDQ is the primary transmit and receive antenna in the forward, port, starboard, and aft
directions.
The HPB antenna is a receive-only antenna which provides supplementary coverage to
the port and starboard sides of the aircraft. Generally, the HPB should not be mounted
underneath the wings due to pattern distortion from the wing surfaces. The HPB
antenna should be mounted close to the centerline underneath the aircraft.
Figure 3.5.1-4 Antenna Off-Centerline Mounting
The FDQ antenna may be mounted 10-20 inches off centerline (depending on the
curvature of the plane). The HPB antenna should generally be centered but may be
mounted up to 12 inches off centerline if required.
Figure 3.5.1-5 Antenna Off-Centerline Tilt
The antennas must be mounted with no more than +/- 1 degree of tilt from vertical,
using the aircraft water line as reference.
+/- 1 degree off-axis tilt