On the other hand, you could go totally old school and use a coherer. The mail deliverer might object to the long antenna on the mail box, but it could work. Check out my favorite coherer link:
http://sparkbangbuzz.com/els/coherer-el.htm ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Wednesday, December 29th, 2021 at 1:21 AM, Robin <mixent...@aussiebroadband.com.au> wrote: > Hi, > > I'm looking for an elegant, simple, cheap means of transmitting a single bit > of information over a distance of 50 > > meters, without wires. > > Imaginative solutions sought. :) > > Regards, > > Robin van Spaandonk mixent...@aussiebroadband.com.au
