[gryphonshafer]

A valuable part of the ADS-B out mandate is that planes even as small as mine (a.k.a. tiny) can cheaply (<200$US) pick up ADS-B in and display it on a consumer tablet. My private airplanes now have pseudo radar. Not every airplane in the air is broadcasting, but most are. This is a huge safety win. Almost without exception I'll see airplanes on my tablet long before I have visual on them.

[sokoloff]

Without ADS-B out on your airplane (which you don't have for <$200), you will only pick up mode-C traffic in your area if there's another airplane nearby with ADS-B out and coded to receive ADS-B in. You would then be intercepting/"piggybacking" the traffic transmissions meant for that airplane.

https://ipadpilotnews.com/2019/09/ads-b-traffic-when-does-it...

https://www.faa.gov/nextgen/programs/adsb/faq/#x8 You probably have a much large hole in your coverage than you thought.

[ryandrake]

Fortunately (unpopular opinion among pilots) the FAA is slowly phasing in ADS-B out as required equipment. Starting Jan 1 of this year, you need to tx ADS-B if you're anywhere you'd otherwise need a Mode-C transponder, including around many airports.

[sokoloff]

Nit: Starting Jan 2

[AviationAtom]

Linkage to what is most likely being referenced here, for the curious: http://stratux.me/