User's Manual Part 2a

Installing the BSR Hardware Installation Guide
4-18 Airspan Networks Ltd. 02030311-05
4.6. Connecting a Third-Party External Antenna
(Optional)
The BSR model with an N-type connector can be connected to an external antenna.
The addition of an external antenna allows greater RF sector coverage than the
standard BSR Internal Antenna model (i.e., 60°). The BSR with an external antenna
is especially suited for base stations with one BSR, where sector coverage can be
increased to 360° by using an omni-antenna. The BSR model for the 900 MHz band
provides two N-type connectors for attaching two external antennas. This provides
dual antenna diversity.
! Connector (third-party): N-type male (two N-type connectors for BSR model
for 900 MHz band. The N-type socket labelled Primary is used only if one
antenna is connected.)
Figure 4-9: Example of an N-type connector
! Cable (third-party): RF coaxial
Warnings:
1) Before connecting the external antenna, ensure that the BSR is NOT
connected to the power source.
2) Before powering on the BSR, ensure that some type of equiment such as
an antenna or an RF attenuator is connected to the N-type receptacle. This
eliminates the risk of burning the BSR device.
To connect the BSR to an external antenna:
! Attach the third-party N-type male connector to the N-type receptacle located on
the BSR’s front panel, as displayed in Figure 4-10.