This pamphlet includes information on a low power transmitter that (as far as I understand) doesn't need a license in many locations. I'm interested in getting a license as well, but I'll definitely be checking this circuit out.
"It is no longer debatable: the network we call 'the internet' is not the network we want nor the network we deserve. […]
"How many everyday users know that the Web is only one of many networks that make up an internet we call 'the internet'? Or, how many know that radio is integral to nearly every network we use? How many even know how radio waves work?
'Other Networks,' then, is a cluster of projects I have been working on for some years, often in collaboration with the irreplaceable libi striegl, to uncover, document, archive, and experiment with networks that existed before the internet or networks that currently exist outside of this internet. […]
"We hope this pamphlet encourages many others to feel emboldened to experiment with this powerful example of an other network that is for everyone."
https://othernetworks.net/2024/08/20/build-your-own-mini-fm-transmitter/