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Two-way radios communicate with each and every other by way of use of radio waves. Radio waves have diverse frequencies, and by tuning a radio receiver to a distinct frequency you can choose up a particular signal.
Radio waves are transmitted as a series of cycles, 1 right after the other.
You may also hear the term “wavelength” when you hear about radio waves. Lower frequencies make a longer wavelength.
Lower frequencies or wavelengths have greater penetrating energy.
For our instance let’s assume that the UHF wavelength the radio makes use of is about a foot and a half lengthy and a equivalent VHF radio is around 5 feet lengthy. Listen to Free Streaming Internet Radio Now with the Radio Toolbar
If you reverse this and you have a 3 foot metal object in front of the transmitting radio, then VHF would win.
For most applications, lower radio frequencies are greater for longer range.
UHF Radio
UHF equipment operates in between the frequencies of 300 MHz and 3000 MHz. Now, the UHF radio frequency is utilized for GPS, Bluetooth, cordless phones, and WiFi.
If you are in an region where interference from other radios could be an problem, UHF transmitters and receivers could be your very best selection unless you use a MURS VHF radio. Something that obstructs a radio wave, will weaken a radio signal. UHF lessens that effect. Although it could not travel as far, UHF radio waves will traverse about obstacles better than VHF.
Indoor coverage at VHF is roughly 270,000 sq ft and 300,000 sq ft at UHF. Expect about 20 floors vertical coverage at VHF and up to 30 floors at UHF. If you select a radio in the VHF MURS frequencies you can operate it with out a license.
1 advantage of UHF transmission is the physically brief wave that is produced by the high frequency. That signifies the antenna on the radio can be shorter than an equivalent VHF radio.
VHF Radio
VHF equipment operates among the frequencies of 30 MHz and 300 MHz. FM radio, two-way radios, and tv broadcasts operate in this range.
Both UHF and VHF radios are prone to line of sight aspects, but VHF a small far more so. If you are operating largely outdoors, a VHF radio is probably the greatest selection, specifically if you are employing a base station radio indoors and you add the external antenna.
VHF radios also have a smaller quantity of obtainable frequencies. The 150 MHz frequency is a Citizens Band radio spectrum that is referred to as the MURS service. MURS stands for Multi-Use Radio Service. It is a low energy, short range service in the VHF 150 MHz Citizens Band radio spectrum. For handheld radios this is a plus.