Αποτελέσματα Αναζήτησης
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication.
Very high frequency (VHF) is the ITU designation [1] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter.
The first thing to know about UHF vs VHF is that UHF radio waves are shorter than VHF – 12 to 24 inches – so they don’t need big antennas, making them less conspicuous. Radio range is also shortened, but you get greater bandwidth occupation.
UHF (Ultra High Frequency) and VHF (Very High Frequency) are two different frequency bands used for various communication purposes. UHF operates in the frequency range of 300 MHz to 3 GHz, while VHF operates in the range of 30 MHz to 300 MHz.
UHF frequencies are higher in frequency than VHF frequencies, which makes them better for short-range communications in urban and suburban areas. UHF radios use a variety of frequencies, including 450 MHz, 470-512 MHz, 800 MHz, and 900 MHz.
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (one decimeter).
15 Αυγ 2020 · UHF (Ultra High Frequency) and VHF (Very High Frequency) two-way radios each have their advantages and disadvantages. We will discuss these advantages and disadvantages in the sections that follow so that you can choose the correct frequency band for your application.