[schiffern]

Shame to see such (otherwise excellent) writing fraught with mistaken SI usage, as defined by the authoritative SI Brochure.[0] It's a small thing that makes any writing feel less credible.

Hopefully the author sees this post and can correct it. The author is using British English so I have preferred that convention. I include a second option which at least corrects any mistaken abbreviations, but the first option is always the correct version.

  >tens or hundreds of Km

"tens or hundreds of kilometres" or "tens or hundreds of km"

  >30Km

"30 kilometres" or "30 km"

  >10nS

"10 nanoseconds" or "10 ns"

  >Khz to low Mhz

"kilohertz to low megahertz" or "kHz to low MHz"

  >hundreds of mS

"hundreds of milliseconds" or "hundreds of ms"

  >a few Khz

"a few kilohertz" or "a few kHz"

[0] https://www.bipm.org/en/publications/si-brochure/