The mistaken idea that UHF wireless systems somehow have overwhelming inherent advantages over VHF systems is widespread. However, the facts simply do not support this notion. Accordingly, in a particular situation, UHF may, or may not, be the best choice. There are a number of important factors to consider. These include where the systems will be used, how they will be used, and for what purpose or application.
Cost is always a concern and invariably plays at least some part in the final decision.
Other factors, such as whether the equipment will be used in many different cities, may also be important. Only by considering the entire situation can an informed choice be made. Simply put, UHF systems do not hold any large technical advantage over otherwise similar VHF systems. The primary advantage of UHF operation is that there is less chance of interference. One of the more common problems with wireless operation is interference between wireless systems.