In most cases users use licensed frequencies either in the UHF or VHF bands. In certain areas licensed frequencies may be reserved for a given user, thus ensuring that there is less likelihood of radio interference from other RF transmitters. Also licence free frequencies are available in most countries, enabling easy implementation, but at the same time other users may use the same frequency, thus making it possible that a given frequency is blocked.
In most scenarios, users utilize licensed frequencies situated within the UHF or VHF bands. In specific areas, these frequencies are reserved exclusively for a particular user, thereby reducing the risk of radio interference from other RF transmitters. Additionally, unlicensed frequencies are accessible in many countries, facilitating easy implementation; yet, this may result in conflicts where multiple users share the same frequency.