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Bi-Directional Amplifiers
BDA’s
Why Do I need a BDA?
When cell phone and two-way
radio coverage is impaired inside
structures, tunnels and other
obstructed areas.
 Safety reasons, it is important to
have radio, paging or cellular
coverage inside a building that has
spotty or no coverage.

BDA’s The Problem-Solver

Allow cell phone and two-way radio
users to operate handsets within a
building or weak coverage area
while maintaining clarity and
quality
What does a BDA
system consist of?
One or more Amplifiers located
inside the building
 An internal and external antenna
network.

How does it work?

The external antenna, usually located
on the roof of the building needing
coverage, receives the signal coming
from the radio site, and brings it into
the amplifier. This antenna also radiates
a signal back to the radio site thus the
term, bi-directional. The internal
antenna network, radiates a signal into
the building in all needed locations, and
receives the signal from the radio being
used in the building, back to the
amplifier.
In-building wireless products:
• Bi-directional amplifiers
• In-line amplifiers
• Yagi antennas
• Omnidirectional antennas
• Power dividers and combiners
Typical Coverage Problems
Shopping Malls
 Office Buildings
 Government Offices
 Jails
 Parking garages
 Apartment buildings
 Stadiums

Coverage Study

Metropolitan Communications will perform
a coverage study, and drawings will be
provided to the customer on what areas will
require BDA’s and what the guaranteed
coverage will be.
Our Systems

Versatile – supports all
technologies:
• Analog
• CDMA
• TDMA
• iDEN
Our Process

Our experienced team provides highly
competitive wireless communication
solutions through the application of
innovative and proven advanced
technologies to support client goals.

There are six essential products and
services provided by our companies
Technology

We provide the “best of breed”
technologies, as they become
commercially available, including
high quality equipment from major
suppliers including Motorola,
Nextel, EF Johnson, Kenwood,
Zetron
System Design

Perform on-site needs analysis;
determine customer requirements
and appropriate solutions.
Translate requirements into a
clearly defined list of materials and
services to be provided.
System Implementation

Contract to provide all necessary
materials and labor to implement a
completely operational system.
After Market Maintenance

Provide full service maintenance for
complex systems on contract or on
demand. Our companies maintain a full
time staff of personnel and fully
equipped service vehicles to guarantee
prompt response in the service area on
a twenty-four hour, seven-day basis.
Proof of Performance Testing

Our companies will provide personnel,
electronic measuring equipment,
vehicles and other necessary
professional services to perform system
operational tests. This includes
measuring all specified parameters,
operational evaluation and formal
certification.
Regulatory

Our companies will arrange for
numerous regulatory
authorizations necessary to
implement and commission an
operating system. We retain a full
service regulatory focused legal
firm in Washington, DC to handle
FCC matters.