Certified Transport Registered Nurse Certification Practice Exam

What does UHF stand for in radio communication?

1. Ultra high frequency

2. Uniform high frequency

3. Unique high frequency

4. Universal high frequency

The correct answer is: Ultra high frequency

UHF stands for Ultra High Frequency, which is a designation used in radio communication to refer to the radio frequency range from 300 megahertz (MHz) to 3 gigahertz (GHz). This range allows for a variety of communication applications, including television broadcasting, mobile phones, GPS, and two-way radios. UHF waves are particularly effective for transmitting signals over shorter distances and can penetrate obstacles such as buildings better than lower frequency waves, making them ideal for urban environments. The other terms in the choices do not accurately represent this specific range of frequencies. While "Uniform high frequency" and "Unique high frequency" may suggest a certain quality of the frequencies, they do not align with established terminology in radio communication. Similarly, "Universal high frequency" does not correspond to an accepted definition and could lead to confusion regarding the type of frequencies used in various communication technologies.