Andrew Wireless Innovations Group MRB-LMR User Manual

An ultra-linear driver amplifier (not shown) provides more downlink gain or
increased drive for the MR Booster PAs.  Contact technical support for
availability and details.

Figure 2-6. Input/output panel

All system inputs and outputs are accessible from the bottom panel of the
cabinet (see Figure 2-5).  All RF connectors are 7-16 female bulkhead. All
unused RF ports have gasketed plates covering the connector cutout.

Control, alarm, and power connections are made via multi-conductor cables
routed through weatherproof glands. Unused glands are filled with removable
plugs.

NOTE: The customer is responsible for ensuring a weatherproof seal on
glands not set up in the factory.

Following are the descriptions of the available I/O connections:

•

 Repeater Duplexer or DL (optionally repeater DL only): Connected to

the repeater’s mobile coverage antenna port.  It accepts downlink signals
from the repeater and outputs the uplink RF to the repeater.

NOTE: If the MR Booster must interface with a non-duplexed system,
this port can be used to route the downlink output from the repeater to the
booster.

•

 Repeater UL (optional): This port is used only when the repeater has

non-duplexed mobile input and output.  The uplink output is then routed
through this connector from the booster to the repeater.

•

 Mobile Duplexer: Connected to the mobile coverage antenna.