Hello Ed,
Here at the Norman Lockyer Observatory we have a wifi signal that reaches our domes and the surrounding grounds outside. Folks with telescopes set up as well as those imaging from the telescopes in the observatory can transmit their videos/ccd images to our lecture theatre projector via Radmin, Anydesk or Teamviewer, so people can watch in the warm! Sadly, not at the moment because of Covid, but we can still broadcast via Zoom.
David