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by yau8edq12i 775 days ago
Millimeter wavelength RF was already studied in the 19th century... The RF communication band you're talking about is smack dab in a band already defined in the original 1937 document.

Honestly the naming scheme makes sense to me. The spectrum is divided into 12 bands of equal (log) size, up to a frequency where we don't know whether such waves will ever be reliably generated at room temperature without breaking the laws of physics. Then these bands are consistently named from "extremely low" to "extremely high", with an extra annoying band at the top. Really, it could be worse.
2 comments
zamadatix 775 days ago
I agree it could be worse but the idea it's really any good seems more like us being used to it than anything else. It's a stupid naming scheme. For a log scale I would really have been happier with everyone using band numbers or something rather than explaining "super high frequency" is higher than "Ultra high frequency" and, despite the terms, that's probably where most typical radio device use cases are these days.
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lxgr 775 days ago
Fortunately we have not just one but two competing band designators – IEEE (widely in use in e.g. satellite communication; L-band, Ku-band, Ka-band etc. come from that nomenclature) and EU/NATO (which seems somewhat obsolete) :)

In addition to that, hams (in study materials and exams) use wavelengths, which is always "fun" to convert from/to frequencies.

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cycomanic 775 days ago
I'm not sure I understand. In 1937 we already knew that light and RF are both part of the EM spectrum so I don't know what you mean by generating waves that break the laws of physics (we have and had absolutely no issues generating waves with 100s of THz frequency). As a physicist coming from the optics I find naming in RF often quite puzzling, e.g. why do we call it microwave, while wavelengths are all longer that millimeters?
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yau8edq12i 775 days ago
> we have and had absolutely no issues generating waves with 100s of THz frequency

In a way suitable for even medium range RF communication? No. That's what I mean. The required power would be insanely high. So high that it's not achievable without some breakthrough. I didn't literally mean "break the laws of physics", because that's something we obviously cannot do.

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cycomanic 774 days ago
What do you mean? We routinely do satellite communications with free space optics, and fibre comms which at the backbone of all modern comms uses light around 193 THz.
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