Radio is trivial to triangulate the broadcaster if someone tries. You can receive anything, but not transmit. If you have line of sight, lasers can be focused to some extent to limit scatter.

One of the biggest changes in Ukraine has been attaching a very thin fiberoptic wire to drones for their connection up to a few miles away. That is evidence of what is truly required and pragmatic. So, start running similar lines if you really care and can come up with a way of hiding them. The only real option is to go dark in practice. There is no way to stop from being forced into becoming a slave in all but name.