This reminds me of an issue I encountered when working in comms at a university. The security guards reported that their radios were not working - the tower whi

This reminds me of an issue I encountered when working in comms at a university. The security guards reported that their radios were not working - the tower which was supposed to repeat their radios between different campuses wasn't working, due to huge interference. After a few hours trying to figure it out (not being RF folks) the security guards realised that the USS Kitty Hawk was in Fremantle harbour - and that this had happened last time the ship visited. Somewhat unfriendly of that aircraft carrier to stomp all over civilian radio, but it might have been some interaction between the type of transmission tower (a large mast on the roof of the tallest building on the campus) and something they were doing (their radar?)