Airy R. Bean wrote:

Some of us have encountered the wrath of our local planning
committees when erecting antennae that seemed reasonable to us,
but perhaps unreasonable to SFB neighbours.

Could we conceive of an antenna, even possible an HF beam, that
folds away into a single rod-like structure when not in use?

Have you never seen a _wind-up_ mast with a beam on top?

You really need to get out more!

David.