76 | Installing the Radio
Aprisa SRi User Manual 1.1.0
Installing the Antenna and Feeder Cable
Carefully mount the antenna following the antenna manufacturers
’
instructions. Run feeder cable from the
antenna to the radio location.
Lightning protection must be incorporated into the antenna system (see
Earthing and Lightning Protection
on page 71).
WARNING:
When the link is operating, there is RF energy radiated from the antenna.
Do not stand in front of the antenna while the radio is operating (see the
‘
RF
Exposure Warning
’
on page 3).
Fit the appropriate male or female connector (usually N-type) to the antenna feeder at the antenna end.
Carefully follow the connector manufacturers
’
instructions.
Securely attach the feeder cable to the mast and cable trays using cable ties or cable hangers. Follow the
cable manufacturer
’
s recommendations about the use of feeder clips, and their recommended spacing.
Connect the antenna and feeder cable. Weatherproof the connection with a boot, tape or other approved
method.
The Aprisa SRi antenna connection is a TNC female connector so the feeder / jumper must be fitted with a
TNC male connector.
If a jumper is used between the feeder and the radio, connect a coaxial surge suppressor or similar lightning
protector between the feeder and jumper cables (or at the point where the cable enters the equipment
shelter). Connect the feeder cable to the antenna port on the radio.
Earth the case of the lightning protector to the site Lightning Protection Earth.
The Aprisa SRi has an earth connection point on the top left of the enclosure. M4 8mm pan pozi machine
screws and M4 lock washers are supplied fitted to the radio. These screws can be used to earth the enclosure
to a protection earth.