User's Manual

SkyGateway/SkyExtender Installation And Configuration
September 2004 1-3
overlapping channels can be supported. In an environment free from
significant interference in the UNII band, as many as four SkyGateWay or
SkyExtender units can be installed at a single location, each configured to
use a different channel.
The radio module also contains the wireless MAC and Physical Layer logic,
implementing the 802.11a hardware specification via an Atheros chipset.
The radio module connects to the motherboard for data and to the
switchboard for RF.
A switchboard provides the connection between the radio and the antenna
array. It provides antenna selection and amplifies the radio signal.
An integrated GPS receiver in both SkyGateWay and SkyExtender
basestations is used by SkyControl software to synchronize transmissions
within the network. It connects directly to the motherboard. The GPS
antenna is positioned on top of the antenna array assembly inside the
SkyGateWay enclosure.
Connectors
A RJ-45 jack enables a SkyGateWay to receive power and connect to an
external network. The same jack on the SkyExtender is normally only used
for power, but can also be used to connect directly to a subscriber’s network
or computer. (Both units come with a Power over Ethernet injector module
that combines incoming data and power onto one Ethernet jack that
connects to the SkyGateWay or SkyExtender device.)
An optional serial adapter (RJ-45 connector) permits local access to a
command-line interface (CLI) to change the unit’s settings.