Comments by "vk2ig" (@vk2ig) on "What Happened to the Numbers Stations? - Spying by Numbers" video.

  1. Increasingly the general public has no idea what shortwave is. About three decades ago many people still knew about it.
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  2. One problem with re-using OTPs is that even though an adversary may not be able to read the contents of, say, two such transmissions, they can use the two to form a "book cipher" and attack the cipher that way.
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  3.  @stevemumbling7720  Except in the case of ionospheric "tilts", where the radio signal will deviate from the great circle path. However; knowing the state of the ionosphere at the reflection points, and modelling that using suitable ray tracing software, will mitigate that to some extent.
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  4.  @Player_Review Lots of people confuse the epidemiological effects of non-ionising and ionising radiation. There are plenty of conspiracy theories about this - and they make as much sense as Flat Earth, Faked Moon Landings, the world's politicians all being lizard creatures from outer space ... just to name a few. Photons (energy packets) of electromagnetic waves at radio frequencies don't carry enough energy to break covalent bonds, i.e. they cannot knock electrons off atoms or molecules and create ions. Damage from radio waves is somewhat frequency-dependent, and includes body heating, deep tissue burns and surface burns. But higher frequency radiation such as ultraviolet, extreme UV, x-rays, etc, is ionising, and that's a different matter altogether.
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