Oh wow, I am from the part of Turkey that this is from (i.e within 30-40 miles) and I had no idea - my impression was that they were just whistling certain pre-

Oh wow, I am from the part of Turkey that this is from (i.e within 30-40 miles) and I had no idea - my impression was that they were just whistling certain pre-mediated commands. Weird thing to see on Hacker News today, the next time I hear one I’m going to hunt the guy down and ask me to explain. By the way, just to give some context, this is what the place looks like - you actually do need this kind of communication because you might be communicating from hill to hill, with a very deep valley in between, so it’s impossible to actually get closer and shout. https://www.google.com/search?q=rize+yayla&client=safari&hl=en-gb&prmd=imnv&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjKn5rt_8jiAhURCTQIHW7kCmwQ_AUoAXoECA0QAQ&biw=375&bih=553 https://www.google.com/search?q=rize+yayla&client=safari&hl=... We have pretty decent LTE signal up there by now, but I guess old habits die hard.