AValon RF GS-S - Manual (Page 13)

AVALON RF, INC. Page 11
GS Series User’s Guide & Operating Manual
3. Operating the GS-S.
All required internal antenna connections have been made inside the
GS-S. If installing any user equipment inside the enclosure, please do
not disconnect any factory made antenna connections.
NOTE
The GS-S requires a radio line of sight (LOS) to work correctly. It
may be used in other partially blocked LOS situations but the
operating distance could be significantly reduced.
WARNING
The Uplink antenna MUST be connected before powering on the
GS-S. Failure to do so might damage the Uplink power amplifier.
Operation of the GS-S is very simple. The user must first connect the
2 detachable omni antennas – the Uplink antenna and the downlink
antenna. Mount the GS-S on a stable tripod or base.
Unscrew the frequency select switch cover (it is anchored by a wire to
the frame) and let it hang loose. Do not remove the cover completely
by cutting the holding wire or unscrewing its retainer. This cover has
a water tight seal and is essential to protect the electronics inside
from ingress of water. Select the downlink frequency of the signal of
interest and the control Uplink frequency to match the UAV/ vehicle
(the frequencies selection can also be done later).
Connect the interface cable connectors to the respective receptacles/
plugs and then plug into the GS-S.
3.1 General Guidelines
While the setup of the GS-S link is very simple, observing a few
considerations will help get the optimum performance.
First, height of the equipment plays an important role in the distance
over which the radio link works. The higher you place the GS-S, the
longer the available link range. This is a direct result of the increased
distance to horizon and clearing/ improving any Fresnel zone