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The Ibanez Ashula bass guitar, though having seven strings, would also not be considered as an extended-range bass because the first four strings - G D A (low)E - lie over a section of the fretboard that has frets whereas the last three strings - a lower G, D and A - lie over a fretless part of the same fretboard.
In this range, human hearing is less sensitive, so these notes tend to be felt more than heard. [2] The low E-string on a bass guitar is usually tuned to 41.2 Hz, while the lowest note on a standard piano is A at 27.5 Hz. Sound reinforcement systems and PA systems often use one or more subwoofer loudspeakers to amplify sounds in the sub-bass range.
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.
US frequency allocations chart, 2016. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1]
Mobile networks based on different standards may use the same frequency range; for example, AMPS, D-AMPS, N-AMPS and IS-95 all use the 800 MHz frequency band. Moreover, one can find both AMPS and IS-95 networks in use on the same frequency in the same area that do not interfere with each other.
A license owner can also partition the license (split geographically) or disaggregate it (split the whole licensed frequency range into two sub-ranges). [2] Whole, partitioned, and disaggregated licenses can be sold to virtually any other entity. The Cellular band occupies 824–849 MHz and 869–894 MHz ranges.
The L band is the Institute of Electrical and Electronics Engineers (IEEE) designation for the range of frequencies in the radio spectrum from 1 to 2 gigahertz (GHz). This is at the top end of the ultra high frequency (UHF) band, at the lower end of the microwave range.
In response to a Notice of Proposed Rulemaking of July 2018 from the US Federal Communications Commission (FCC) to make the 3.7 to 4.2 GHz spectrum available for next-generation terrestrial fixed and mobile broadband services, [5] the C-Band Alliance (CBA) was established in September 2018 by the four satellite operators—Intelsat, SES ...