What you can hear at Davos... With RTL-SDR

[grarpamp]

http://hardware.slashdot.org/story/16/01/27/1654246/collecting-private-flight-data-on-the-world-economic-forum-attendees-with-rtl-sdr
http://qz.com/600590/we-brought-an-antenna-to-davos-to-track-private-air-travel-and-heres-what-we-found/
https://en.wikipedia.org/wiki/Automatic_dependent_surveillance_%E2%80%93_broadcast
http://bit.do/RTL-SDR-and-GNU-Radio-with-Realtek-RTL2832U

Every year politicians and business men meet at the World Economic
Forum in the small mountain town of Davos, Switzerland to discuss
various topics and create business deals. This year Quartz, an online
newspaper/magazine sent a journalist to the forum tasked with writing
a unconventional story about the forum: he was asked to monitor the
private helicopter traffic coming in and out of Davos from transponder
broadcast of ADS-B data. Using an $20 RTL-SDR dongle, Raspberry Pi and
ADS-B collinear antenna they monitored the flights over Davos. From
the data they were able to determine the flight paths that many
helicopters took, the types of helicopters used and the most popular
flight times.