Ultra High Frequency (UHF) Radio Communication PDF Print E-mail

The Cellular Telephone introduced a vast change to the everyday life where communications is an essential part of the internal working of any organization.

However, the cost involved is still a key factor to consider and UHF Radio still offers the cost effective alternative.

About UHF Radio

VHF (Very High Frequency) is that portion of the radio spectrum between 300MHz and 3GHz and specifically in the range of 400MHz to 470MHz for the UHF Radio environment.  The application of this spectrum of the wireless communication media is suitable for users in any combination of fixed stations, mobile stations or portable/handheld radio’s on foot.

Applications are found in the Land Mobile environment for Public Service Organisations, Business and Public Safety applications and more specifically in build-up areas such as cities and large industrial sites.

The propagation characteristics of UHF Radio can in brief be described as
Line-of-Sight (LOS).  Therefore in effect just as far as what the eye can see.  The radio wave travels in a direct line between the transmitter and receiver station.

The characteristics of the UHF radio wave propagation also make it more suitable for use in buildings and the penetration of the radio wave over short distances is better than that of VHF radio waves.

UHF Radio propagation is negatively influenced by distance, high terrain and other obstructions such as buildings and specifically metal structures between radio stations.

This can be overcome by Radio Repeater stations in order to overcome the distance and other obstructions between stations.

Radio Repeater stations however poses it own challenges in terms of deployment, electrical power, security, maintenance and cost.

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