User's Manual
Table Of Contents
4 MTU Installation Requirements
Signal Propagation
Free Space Attenuation
Free space attenuation is the natural loss in signal strength that occurs when radio
waves pass through open air. This loss in signal strength is proportionate to the
distance between the transmitter and the receiver. While the actual installation of
the MTU will not change the free space attenuation considerably, certain locations
may require the use of an extended range MTU or additional DCUs to improve
communication.
RF Absorption
RF absorption occurs naturally with objects that are not electrically conductive
such as drywall, concrete, wood, and foliage. A variety of factors affect how much
RF energy is absorbed by the obstruction. The following illustrates how concrete
tends to absorb more RF energy than a sheet of drywall.
DRAFT