They are very different to the HF ham radio bands in their character, but this means that they provide a different challenge and a different area of interest within the hobby of amateur radio. The UHF ham radio bands are very convenient to use. Antennas are small and amateur radio equipment for the UHF bands is compact and widely available. This means that it is easy to set up and install a station in most areas, and many people even have a small ham radio station in their car. The actual allocations vary between one country and the next, and also the different radio regions. It can be seen that some bands are allocated in the USA that are not available in the UK, and vice versa.
The Backbone Of VHF Amateur Radio May Be Under Threat
The Backbone Of VHF Amateur Radio May Be Under Threat | Hackaday
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A story that has been on the burner for a few weeks concerns a proposal that will be advanced to the ITU World Radiocommunication Conference It originates with French spectrum regulators and is reported to be at the behest of the Paris-based multinational defence contractor Thales. The sting in its tail is the proposed relegation of amateur radio to secondary status of the widely used two-meter band MHz to permit its usage by aircraft. The machinations of global spectrum regulation politics do not often provide stories for Hackaday readers, but this one should be of concern beyond the narrow bounds of amateur radio. Most parts of the radio spectrum are shared between more than one user, and there is usually a primary occupant and a secondary one whose usage is dependent upon not interfering with other users.
The centimeter or MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use. Most amateurs operating on 70 cm use either equipment purpose built for ham radio, or commercial equipment designed for nearby land mobile frequencies. Amateurs predominately use the band for FM or digital voice communications through repeaters. Due to its size , it's the lowest frequency ham band which can support Amateur television transmissions.