Call Us:
Communication and vehicle mounted antenas have long been a staple for linking adventurers to each other and the outside world. But why does one radio work better than another? There are many contributing factors that can lead to poor transmission and reception. The easiest way to ensure your radio works to it's best potential is to use an aerial with the most optimal dBi gain for the surrounding environment.
A short general explanation is that a high gain antenna will suit flat, open country and a low gain antenna will work better in mountainous, high country.
Most readily available high gain antennas will be around 7 to 8dBi, these will work very well out on the flat and will transmit good distance from a hilltop. They will be compromised if trying to connect with someone down in a valley. Low dBi, Known as Utility gain antenas, however, will transmit shorter distances but will reach to or from a valley with steep hills and trees. These will have a rating around 2dBi.
Illustration shows how the recieve / transmit patterns change with dBi gain.
Medium gain aerials are a popular choice for a mix of uses. Around 3 to 5dBi, these are mid spectrum and will do both jobs reasonably well for vehicle to vehicle use. CTO Industries have a range of options to suit most requirements. Ask our friendly staff for more information.
