Why do news helicopters make these weird sounds?

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Here is an example of said sound: https://www.youtube.com/watch?v=XUmdJp5XmSM

In: Engineering

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Anonymous 0 Comments

Someone discovered that they’re databursts with live GPS information.

[http://www.windytan.com/2014/02/mystery-signal-from-helicopter.html](http://www.windytan.com/2014/02/mystery-signal-from-helicopter.html)