Hello Jan,

>>>> People are working on THz (Tera Hertz) links too these days.
>>>> There is no escape :-)
>> Wow. How long until we get up to infrared?  Let's see, about
>> 1000 nm at 300 MHz/meter... 300 THz?
>> *ESCAPE*.../ESCAPE/...ESCAPE....Escape...escape..... .
>> ...0x1B...^[...
>> Oh, wait...
>> ^C...
>> OK, to hell with it...
>> kill -9...
>> NO CARRIER

> Try
> rm -rf /*

> We are alreay in IR:
> http://panteltje.com/panteltje/pic/ir_pic/
> use it to control my cable receiver from the PC to record movies on the
> PC on time.

Have you ever seen this:
RONJA (=Reasonable Optical Near Joint Access)
http://ronja.twibright.com/about.php
Free translation to Dutch:
ZODAT (=Zinvolle Optische Dichtbij Aansluit Toegang)

It gives you an IR wireless link to another friend nearby at 10 MBit FD
EtherNet. I love this 100 % selfmade connections.
There are full descriptions of how to build and test this.
Especially the option to keep de glasses free of condensation for instance.
For resistors in a rectangle setting for heating the glasses from inside.
But this RONJA is not suitable on inland ships (my other hobby),
because of all the movements ships always have ;-(.
Think about up/down, turn left/right, rolling, stamping, gearing etc.

I also have seen discs in a dome that move in the oposit direction the ship
moves, to get a constant good link to the satelite they follow.
That is possible both for tv wathing as an internet link via satelites.
But they ask such high prices for such equipment and contributions ;-(.
I think the new DigiTenne DVB-T2 is a more cheaper solution.
In Germany there is already DVB-T2 for television,
but in the Netherlands they still only use DVB-T1.
And only NPO1, NPO2, NPO3 and one local tv-transmission are Free to Air.

I have two information packets avaialble for hobbyists in Dutch.
One is a selfbuild AIS+ECDIS for inland ships with a Raspberry Pi 2B/3B+.
And the other are 123 schematics for on board ships electricity.
Here are the links:


Good luck with it.
You know, a Raspberry Pi fits on almost every boat ;-).

Nautical Greetings from Henri at the river Rhine in Arnhem.

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