Have dump1090 running as well on my MBP.
Now decoding the a/c. Although having only their ICAO address is not all that interesting.
Searching for one of them finds that A8B848 is N661DN, a Delta Airlines 757.
In watching his reported altitude, looks like he's arriving here at KMSP. Looked up arriving Delta 757s around this time and there's one from Los Angeles and one from Phoenix. Welcome to Minneapolis, enjoy the cold.
I've been running dump1090 in interactive mode
--interactive where displays the received aircraft in a table that updates a few times a second. It keeps track of what ICAO codes have been heard, as well as other info, and eventually, if it gets enough packets, updates the aircraft's flight number, position, etc. I could have sworn adsbScope on Windows was displaying the tail number (presumably from the ICAO code via some database file) but perhaps I was imagining it.
Maybe I'll try to make a nicer cocoa app from dump1090. Any suggestions as to what you'd find useful?
I'm using a discone antenna, what are you using for an antenna?
Here's my misadventures in getting rtl-sdr built on the Mac:
http://www.hfunderpants.com/?p=1236