Installing An Indoor Directional External Antenna - Nortel Meridian Companion Installation And Maintenance Manual

Installing an indoor directional external antenna

P0725810 Issue 3.0
• Always ensure that the antenna is clear of any adjacent
obstruction, particularly metal. If more than one external antenna
is used at a cell center, they should be spaced at least 0.5 m from
each other to avoid radio interference problems.
• Use RG-58/U co-axial cables to connect the antennas to the Base
Stations.
!
Only passive antennas may be connected to the
COMPANION Base Stations.
The co-axial cable connecting the external antenna to a Companion
Base Station must have an impedance of 50 ohms.
The indoor directional external antenna comes with its own back
plate for mounting. The recommended mounting height on a wall is
halfway between the floor and the ceiling.
Note: For some applications (for example, a stairwell), you can
mount the antenna on the ceiling.
Figure 36: Indoor directional external antenna
1. Mount the antenna using four screws.
2. To prevent undue stress on the co-axial cable, secure it to the
mounting surface.
3. Connect the antenna to the appropriate Base Station radio.
Note: The co-axial cable length must not exceed 10 m.
COMPANION 200 Installation and Maintenance Guide
Installing the hardware 78