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Ground Radio Communication

Ground radio communication forms one of the most cost-effective and reliable solutions for secure long-range communication. This communication saves a lot of resources when compared to telephone or mobile communication. The wireless ground radio communication was first adapted for military use by the U.S. Army; today, it is used by both military and government agencies in urgent conditions. Different radio products are available as per the usage. They come in the form of manpacks, telephone Internet connects, transceivers, crosspatch, modems and antennas that are used for long-range ground communication.

  1. Various Frequency Ranges

    • Ground radio communication uses different bands of electromagnetic waves. These are primarily three types--high frequency, very high frequency and ultra high frequency. High radio frequencies are between the 3 and 30 MHz. Very high frequency (VHF) is between 30 and 300 MHz, and ultra high frequency (UHF) is the radio frequency range from 300 MHz to 3000MHz (or 3 GHz).

    HF Radio Waves

    • The radio sets using HF range of frequencies use the ionosphere and can often reach vast distances across the continents, often 3000 km and more. Amplitude modulation (AM), one of the earliest radio modulations, is a broadcasting system which uses frequency bands below 30 MHz. Both radio and television broadcast station typically amplitude modulation to encode information. AM radio communication uses high frequencies but low power transmission that travels in a straight line. Thus, TV or FM radio signal can travel long distances without interruption.

    VHF Radio Waves

    • VHF radio waves are frequency modulated and lie in what is called the "FM band." This range can carry huge amount of information; hence, they are also used in television broadcasts. However, FM signals travel on line of sight (LOS) and have a limited use over larger distances. The quality of receptions also deteriorates in areas that have hills and high rise buildings.

    UHF Radio Waves

    • UHF radio waves are also called microwave frequencies. They are used for many modern gadgets like mobile phones, televisions, wireless networking, satellite radio and GPS. UHF radio waves are capable of carrying a data rate higher than VHF, thus containing more information. UHF signals can also penetrate obstacles such as buildings and clouds; UHF radio waves can therefore propagate longer distances, often up to 100 miles without distortion. They also have lesser power requirements for transmission.

    Advantages

    • The first advantage is its cost effectiveness as communication made using long-range HF radio sets is the cheapest. Secondly, it has great range as high frequencies travel over 3000 km. The ground radio communication using HF frequencies requires lesser infrastructures than any other mode of communication including the satellite communication. Ground radio communication using HF is more secure than other methods, which is why the army uses it. The maintenance costs of ground radio communication are cost-effective as well.

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