To communicate inside city without 3rd party knowing you can put ethernet cables along power lines or across laundry lines. Cable between router and switch can be 100 meters long. For long distance you need to use radio frequencies and radio can be triangulated.
Best way to avoid triangulation is figure out cars plates that do it, the hardware for triangulation is big - especially the antena so they will most likely keep it in same car(s). Once you have plates you can just watch car working hours and keep emitting signals after those hours but of course if you’re targeted they might change hours.
To communicate inside city without 3rd party knowing you can put ethernet cables along power lines or across laundry lines. Cable between router and switch can be 100 meters long. For long distance you need to use radio frequencies and radio can be triangulated.
Best way to avoid triangulation is figure out cars plates that do it, the hardware for triangulation is big - especially the antena so they will most likely keep it in same car(s). Once you have plates you can just watch car working hours and keep emitting signals after those hours but of course if you’re targeted they might change hours.
Cuba is or was doing city wide LAN gaming without internet. https://www.youtube.com/watch?v=lEplzHraw3c
Good Luck