Yes but Swiss railway Journeys isn't a channel is it, or is it, I don't think it is?
It's on the Travel 2 channel but is pretty much continuous on Tuesdays, starting at 11am and ending in the early hours of Wednesday morning, with no other programmes between.
Perhaps an aviation TV channel could broadcast at evenings/weekends only to reduce the costs when fewer people are likely to be watching?
Speedbird - would your plans for an internet TV format be a continuous line-up of shows, i.e. you have to log in at the right time to catch the show you're interested in? Or more like video on demand as per the Loop TV website? Or perhaps both?