I recently got an SDR dongle, remembering similar experiences from my childhood. I noticed the exact same thing about Chinese radio stations. At first I though

I recently got an SDR dongle, remembering similar experiences from my childhood. I noticed the exact same thing about Chinese radio stations. At first I thought I was lucky to find some reflections from the other side of the world. But globally tuning around via kiwisdr.com made me realise that these must be locally repeated. This is a remarkable phenomenon. Together with a load of other government supported stations from the US, Britain and France and the occasional apocalyptic warnings by Christian radios, this makes the air full of someone's propaganda. Realising that was a bit sad.