Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz),...

Frequencies immediately below HF are denoted medium frequency (MF), while the next band of higher frequencies is known as the very high frequency (VHF)...

frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF (very...

Very High Frequency Omnidirectional Range Station (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving...

high end of the band (Also repeaters are in the 29.500–29.700 MHz segment in many countries). Frequencies above 30 MHz are referred to as Very High Frequency...

Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively...

specialist manufacturer and supplier of commercial high frequency (HF), tactical HF and very high frequency (VHF) communications equipment. Its head office...

(in the audio spectrum). FM radio stations use the very high frequency range of radio frequencies. Throughout the world, the FM broadcast band falls within...

shore. From the very early days of radio, large oceangoing vessels carried powerful long-wave and medium-wave transmitters. High-frequency allocations are...

frequencies European cable television frequencies Pan-American television frequencies Television channel frequencies Ultra high frequency Very high frequency...

surveillance radar (ASR), precision approach path indicator (PAPI), Doppler very high frequency omnidirectional radio range (DVOR) – distance measuring equipment...

High-frequency trading (HFT) is a type of algorithmic trading in finance characterized by high speeds, high turnover rates, and high order-to-trade ratios...

Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical...

different names for the electromagnetic waves within each band. From low to high frequency these are: radio waves, microwaves, infrared, visible light, ultraviolet...

Volga 149.200 (Russian: Волга 149.200) is a Very high frequency radio frequency (149.2 MHz) for receiving surrender appeals from Ukrainian servicemen...

known as electronic heating, radio frequency heating, and high-frequency heating, is the process in which a radio frequency (RF) alternating electric field...

transmitting predefined digital messages via the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems. It is a core part...

Alternating Currents of Very High Frequency, Electrical World, Feb. 21, 1891 Experiments with Alternate Currents of Very High Frequency and Their Application...

Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz). This band of frequencies is also...

and other frequencies directly to the human subjects. Very high power levels of 160 dB were achieved at frequencies of 2–3 Hz. Test frequencies ranged from...

very similar in appearance but with improved performance and a new set of controls for adjusting the selectivity (bandwidth) and center frequency. Rather...

and varying atmospheric conditions that affect reception. In the very high frequency band, greater than 30 megahertz, the Earth's atmosphere has less...

conversion, respectively. Intermediate frequencies are used for three general reasons. At very high (gigahertz) frequencies, signal processing circuitry performs...

Nebo-SVU (also known as 1L119) (in Cyrillic: Небо-СВУ, 1Л119) is a very high frequency multi-functional radar and first radar with an active electronically...

non-government ultra high frequency (UHF) and very high frequency (VHF) common carrier and the private radio service frequencies are shared. Further details...

range of frequencies. RF circuits by contrast are typically required to operate at high frequencies but often over a very narrow frequency range. For...

Band III is the name of the range of radio frequencies within the very high frequency (VHF) part of the electromagnetic spectrum from 174 to 240 megahertz...

Extremely high frequency is the International Telecommunication Union designation for the band of radio frequencies in the electromagnetic spectrum from...

spectrum used for broadcasting. North American broadcast television frequencies AM broadcasting FM broadcasting Dead air Internet radio Radio network...

circumstances ship-to-aircraft. It uses FM channels in the very high frequency (VHF) radio band in the frequency range between 156 and 174 MHz, inclusive, designated...