Telenetics OM-AMPS-100 - Manual (Page 48)

Section 5
External Antenna Guidelines
48 OMEGA Installation, Operation, and Maintenance Manual
NOTE: Doubling the E.R.P. does not double the range of an antenna.
External Antenna Selection Criteria
The following sections identify the factors to consider when
selecting the type and location of external antenna to use with your
OMEGA unit.
Antenna Placement
The method and quality of the antenna installation impact the
clarity and reliability of cellular signal reception and transmission.
Always strive for optimal antenna placement.
Distance from the Antenna to the Closest Cell Site
Find out the locations of all nearby cell sites. This information will
help you position the antenna for maximum performance. Contact
the local cellular carrier to obtain this information.
Degrees of Down-tilt on the Cell Site Antenna Array
Contact the local cellular carrier to find out this figure. The greater
the down-tilt, the closer your antenna should be to the cell site or
the higher gain antenna you need.
Obstacles between the Antenna and Cell Site
Natural obstacles such as mountains, hills, and trees between the
antenna and cell site can cause signal deterioration. In some
instances, the signal can be blocked completely. To compensate for
natural obstacles, move the antenna location, raise the antenna
height, or use a higher gain antenna.
Man-made obstacles can also affect cellular performance. Check
the path between the antenna and the cell site for tall buildings,
water towers, and other construction. To compensate for man-
made obstacles, move the antenna location, raise the antenna
height, or use a higher gain antenna are ways.