Sorry (not sorry) for being so shallow, but my overriding memory of Gus is him leading the singing of "we're f***ing brilliant" on Madeira Drive arches after leading us into the championship. What a journey we've been on since then.
I'm guessing, but I imagine there's only one aerial serving the three TVs, so maybe there's a splitter/amplifier (possibly sited in the loft)? Try to follow one of the aerial connections to see where it goes - if it disappears into a wall then have a look in the loft to see if you can find a box...