Extremely high frequency (EHF) is the International Telecommunication Union designation for the band of radio frequencies in the electromagnetic spectrum...
24 KB (2,551 words) - 10:08, 6 June 2025
Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force. They are used to relay...
23 KB (2,460 words) - 17:02, 18 July 2025
Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths...
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Hearing range (redirect from High frequency limit)
at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal. Sensitivity also varies with frequency, as...
28 KB (3,430 words) - 07:06, 25 May 2025
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical...
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Radio spectrum (redirect from Frequency plan)
data at an extremely slow rate of about 1 bit per minute (17 millibits per second, or about 5 minutes per character). The highest frequencies useful for...
44 KB (2,942 words) - 16:48, 9 July 2025
high-data-rate satellite communication (SATCOM) masts, built by Raytheon, enabling communication at super high frequency (for downlink) and extremely...
136 KB (10,768 words) - 20:14, 21 July 2025
wing of the satellite that broadcast in the Super High Frequency (SHF) and Extremely High Frequency (EHF) ranges, and also a classified communication...
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Electromagnetic spectrum (redirect from Electromagnetic frequency spectrum)
different names for the electromagnetic waves within each band. From low to high frequency these are: radio waves, microwaves, infrared, visible light, ultraviolet...
47 KB (4,685 words) - 15:35, 12 May 2025
Spectral density (redirect from Signal frequency spectrum)
electric field E ( t ) {\displaystyle E(t)} as it fluctuates at an extremely high frequency. Obtaining a spectrum from time series such as these involves the...
37 KB (5,864 words) - 21:13, 4 May 2025
word can be used as an insult, like "fool", although, due to its extremely high frequency of use in a multitude of contexts, it has lost much of its offensive...
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USA-214, also known as Advanced Extremely High Frequency-1 or AEHF-1, is a military communications satellite operated by the United States Air Force. It...
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known as Schumann resonance. On the other hand, waveguides used in extremely high frequency (EHF) communications can be less than a millimeter in width. During...
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UHF Follow-On satellite (redirect from Ultra High Frequency Follow-On)
were based on the 601 series of communications satellites. The Extremely high frequency (EHF) package on satellites four through eleven have an Earth coverage...
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northern Buryat samples of Kharkov et al. (2014) exhibited an extremely high frequency of haplogroup C2-M407: 48/76 = 63.2% C3d-M407, 14/76 = 18.4% N1c1-Tat...
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transmitting and receiving radio waves in the super high frequency (SHF) or extremely high frequency (EHF) bands (e.g. microwaves). When a ground station...
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used by wireless data transmitters, in the extremely high frequency (EHF) radio band (which is a lower frequency than visible light). The health risks posed...
66 KB (7,185 words) - 00:58, 6 July 2025
(medium frequency to extremely high frequency). It is a component that is used in electronic systems to pass or reject specific frequencies and attenuate...
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USA-292, also known as Advanced Extremely High Frequency 5 or AEHF-5, is a military communications satellite operated by the United States Space Force...
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results of higher placed team only. Note 2: Considering there is an extremely high frequency of retirements due to various reasons w.o. wins/defeats are counted...
56 KB (1,847 words) - 03:05, 22 July 2025
Doppler radar (section Frequency variation)
of small unmanned aerial vehicles. Radar systems operating at extremely high frequency offer enhanced Doppler resolution for a given coherent processing...
26 KB (3,269 words) - 21:56, 19 June 2025
Lockheed Martin E-130J (category High-wing aircraft)
communicate on virtually every radio frequency band from very low frequency (VLF) up through advanced extremely high frequency (AEHF) using a variety of modulations...
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data streaming speed using vortex millimetre waves, a form of extremely high-frequency radio wave with rapidly changing spins, the researchers transmitted...
33 KB (2,903 words) - 04:05, 8 July 2025
USA-288, also known as Advanced Extremely High Frequency 4 or AEHF-4, is a military communications satellite operated by the United States Air Force. It...
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Alexanderson alternator (redirect from High frequency alternator)
developed by Ernst Alexanderson beginning in 1904, for the generation of high-frequency alternating current for use as a radio transmitter. It was one of the...
24 KB (2,565 words) - 07:35, 30 December 2024
USA-235, also known as Advanced Extremely High Frequency 2 or AEHF-2, is a military communications satellite operated by the United States Air Force. It...
4 KB (290 words) - 18:48, 20 August 2022
support varying requirements, Ultra high frequency (UHF), Super high frequency (SHF) and experimental Extremely high frequency (EHF) channels are available....
61 KB (6,099 words) - 14:28, 2 July 2025
a version of the Amiga Hunk executable file format Extremely high frequency, a radio frequency band European Handball Federation, the European governing...
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Radio propagation (redirect from Radio frequency propagation model)
listening areas. As the frequency gets lower, the attenuation with distance decreases, so very low frequency (VLF) to extremely low frequency (ELF) ground waves...
28 KB (3,467 words) - 12:42, 22 July 2025
Retrieved 1 November 2014. "Effects on the human body: Extremely low frequency RF | Radio Frequency | Radio Spectrum". Scribd. Archived from the original...
85 KB (10,023 words) - 05:52, 7 July 2025