I guess we do things the hard way "because it is there". There are far easier ways to communicate over this distance! As I said before, personally I think 481THz (optical) is much easier than microwaves.
UK distance on 241 GHz improved to 400m in latest tests by G8ACE. Tweeted by @UKGHZ which is the UK microwave group.
See https://twitter.com/UKGHZ/status/74124618582711091 .