vimwiki/tech/frequency_range.wiki

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= Frequency Range =
The Frequency ranges of radio are broken into several bands that are named and
standardized. They appear below
| Name | Abbreviation | Range | Notes |
---------------------------------------
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| Very Low Freq | VLF | 3khz - 30khz | |
| Low Freq | LF | 30khz - 300khz | |
| Medium Freq | MF | 300khz - 3mhz | AM Radio |
| High Freq | HF | 3mhz - 30mhz | Shortwave, 10m to 1m |
| Very High Freq | VHF | 30mhz - 300mhz | VHF TV, FM radio, 1000cm to 100cm |
| Ultra High Freq | UHF | 300mhz - 3ghz | UHF TV, 3G/4G, 100cm to 30cm |
| Super High Freq | SHF | 3ghz - 30ghz | |
| Extreme High Freq | EHF | 30ghz - 300ghz | |
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To calculate a wavelength from a frequency
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WL = c / f
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Where WL is wavelength,
c is speed of light (3 * 10^8 m/s)
f is frequency
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A shorthand is
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WL = 300 / f
Where f is in Mhz