User Manual Chapter 3

Chapter 3: Installing the Hardware Infrastructure 3-23
CBS Antennas
Two types of antennas are available for the CBS:
• Transmit
• Receive
The transmit and receive antennas look similar, but have the following
differences:
• The transmit antenna has a screw-on reverse polarity SMA
connector and uses cable 1424-C424-0018 to connect to the CBS. The
other end of this cable has a reverse polarity TNC connector.
• The receive antenna has a BNC connector and uses cable
1424-C057-0180 to connect to the CBS. This cable has two BNC
connectors.
Note: With 100 mW CBSs, a 15 m (49 ft.) receive antenna cable
1416-C520-0150
must be used instead of the usual 18 m (59 ft.)
receive antenna cable.
Consider the following when installing antennas:
• Install the antennas at the same time you are installing the CBSs.
• On a dropped ceiling, mount the antennas from the T-bars. In an
open ceiling, hang the antennas from the roof trusses.
• When mounting the antenna, face the front of the antenna (the side
opposite the cable connector) towards the ESLs, with as few
obstructions between it and the ESLs as possible.