Private free-space communication.

[Steven Schear]

LiFi or similar optical comms are also private, even stealth comms
capabilities.

I'm still sold on non-networked, radio wireless, stealth solutions. Even
better ones without the need for any tech infrastructure. After a
abandoning R&D, due to take-up of satellite comms, the DoD has returned to
LF - UHF advanced radio (e.g., Mitre HF). NVIS (6-12 MHz) via wideband is a
hot area.



On Wed, Jun 23, 2021, 11:42 AM grarpamp <grarpamp at gmail.com> wrote:

> On 6/23/21, Steven Schear <schear.steve at gmail.com> wrote:
> > The problem with IR laser comms is its only p2p, LoS
>
> Cheap, works. Use whatever works.
> But for moving bandwidth, digging or stringing fiber and copper,
> or mounting laser... seems hard to beat on cost X speed basis.
> Maybe source simple IR laser module kit from China if it's still
> too high at retail due to fancy targeted-to-business-user
> remarketing bullshit.
>
> Generic RF kit, outside of WiFi std, probably isn't exactly
> cheap yet.
>
> Aren't [the rest of] free space optics solutions still big $$$? ...
>
> > A nice complement may be possible in the
> > near UV (200 - 350nm, with a peak at about 250nm)
>
> Not if it burns unaware people's eyes out.
>
> > the molecular vibrational modes of ozone. Due to atmospheric aerosols
> beams
>
> Ozone densities at ground level under
> varying weather conditions... unreliable?
>
> > at these frequencies.aimed at low-to-mid angles can be sufficiently
> > dispersed so as to enable no-LoS.
>
> > Due to the upper atmosphere ozone these
> > frequencies are greatly darked in most areas of the globe even at noon.
>
> Is this UV / freespace tech at consumer production and price level, links?
>
>
> At Urban/Suburban environments densities distances,
> you probably want each node able to move at least 100Mbps
> over two simultaneous physical links to two other nodes for less
> than around $750 per node. 1 or 10 Gbps is trivial over fiber,
> and is easy to run to, or around, neighbors.
>
> Imagining entire buildings, neighborhoods... linking them up,
> serving as each other's transit... easily possible.
> Co-ops already do buildout models, but they're usually not
> per-node ownership, not mesh protocol'd, and not open to
> linking up, including due to contractual baloney that does
> not exist with true p2p.
>
> Taking that to fully distributed, open-neighbor to open-neighbor...
> from apartments, to farmland... that's the next level.
>
> Similar to cryptocurrencies... open p2p routing standards,
> and philosophy and responsibility of individual ownership,
> needed to prevent problems of centralization... are key.
> The independent nature sells itself under network effects.
>
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