Cellular Antenna Separation

Cellular antennas need to have the proper separation in order to operate properly. The concept is
similar to the examplie of two microphones on a stage. If the microphones are too close they
interfere with each others operation and feedback occurs. If two cellular antennas are too close
then oscillation occurs and this creates noise for the cellular towers in the area.

The distance (separation) required between the outside antenna and inside antenna or inside
antenna and another inside antenna is determined by several variables:

Outside signal strength from the cell tower
Size of cellular amplifier being used
Length of coax used between antennas
Barriers or lack of barriers between antennas

allows antennas to be
placed in locations where
they do not interfere with
each other.

Left shows an example of
both vertical and horizontal
separation of the outside
receiving antenna and the
inside broadcast antenna.

Antennas can interfere
with each other if too close
and the signals broadcast
over each antenna.

Barriers such as concrete
signals so that antenna
can be placed closer
together.

antennas can be placed
on interior walls to
broadcast signal across
the room.

In this example there is a
concrete/metal wall
between the outside
receiving antenna and the
inside broadcast antenna.

Omni-directional dome
antennas with the proper
cellular amplifier size have
the ability to penetrate into
multiple floors if the floor is
not concrete or metal.

When concrete or metal
floors are present them
interior broadcast
antennas are required on
each floor for proper
coverage.

Multiple antennas can be
configured for each floor
and multiple floors can be
configured for each
system providing the
system is designed
properly with the correct
power and separation.

operate properly. Incorrect separation between the outside and inside antennas or even
multiple inside antennas causes oscillation.

Toll Free 866-912-3444
Direct 435-628-5984