Antennas & Transmission Lines
Comments from Falcon Direct


The most essential element.......

in determining the range of a 2-way radio system is HEIGHT, both in terms of ground elevation and height above average terrain.  Suffice it to say that selecting the best possible antenna location is very important.  The second most important consideration is the choice of antenna and cable system.

It's all about dB's.  The more dB's you have, the better your system works.  Antennas are available in unity gain (zero dB), 3 dB (2X power), 6 dB (4X power), and 10 dB (10X power).  This means that not only is talk-out power from the station is effectively multiplied by the applicable factor, but the RECEIVED signal from mobiles and hand held radios is well!

We also have to be concerned about LOSSES attributed to transmission lines and duplexers.  A 3 dB loss in a combiner can cancel the gain, or a portion of the gain of an associated antenna.  A 3 dB loss in the transmission line could completely cancel the gain of a 6 dB antenna, reduce the effective gain of a 10 dB antenna to 4 dB, or reduce the efficiency of a unit gain antenna to -6 dB!

We offer a variety of antennas and cable kits from the top manufacturers.  For pricing and technical information, click here.  If you would like to know more about duplexers, click here.


Copyright 2007 - Falcon Direct, Inc.  This page was last updated on 05/19/2007