The FAA’s January 1, 2020, deadline is here - equip now to stay legal and receive reliable traffic alerts. Remember that all aircraft flying above 10,000 feet, in Class B/C airspace, and within 30 miles of major airports must have an ADS-B Out transmitter installed in the airplane. Fortunately, there have never been more options, many under $2000.
If you're just getting started, read this blog post on ADS-B 101
. If you're trying to decide on the right solution, read this article to find out what's the difference between 1090 and 978?