DIY ADS-B plane tracking for only $20

Nifty. There's a small pile of these Software Defined Radio chipsets out there now, neat to see someone figured out this commercial product was one and can re-task them by just changing processing software.
 
Wonder what I did with my old Winradio. Not that it'll work in a modern motherboard....
 
then this would work in an aircraft?
 
That's what I'm wondering. What would stop an enterprising developer from using this along with an Android tablet and some software to consume what appears to be the ADS-B Out signals from traffic in the area?
 
Note that this is 1090ES only. My attempts to get UAT signals on an RTL2832U with E4000 were unsuccessful so far. Required bandwidth is too great for the available sample rate of the chipset.

BTW, the E4000 in my dongle has an L-band gap between 1079 and 1237 MHz and thus cannot be used for 1090ES. You need to buy a bunch of those $20 things (in reality more like $35) from different suppliers until you find one that works. You know how eBay operates.
 
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