Hi General Lighting ,
Its funny you say about comms being messed up , where i used to work we used to get the Spannish fisheries agency over our radio net !!!!! . Wouldnt mind but we was in the UK at the time , some thing to do with atmospherics …..reckon you might have more of a clue than me but its radio waves bouncing off of something and travelling further . That and the station just up the A1 some times we get crossed transmissions lol . I remember once when i was in the control room hearing a vehicle call rtb ( return to base ) and i looked left and the vehicle was there and hadnt been out !!! lucky i didnt log it lol . It turned out it was the station up the road , but now most radio’s are secure so its theoretically impossible to listen in !!!! .