I am an aircraft monitoring junkie. There I said it. And thanks to the net I am not limited to the audio from just the scanners in my shack. I can do long distance aircraft monitoring also. But hey, the civilian aircraft band (118-137 MHz) are line of sight frequencies so how does he pull it off you say?
Absent a tropo or E-skip opening I use LiveATC.net.
If you want to see all the great ATC live voice links they have check out http://www.liveatc.net/feedindex.php?type=all. Not only can you hear VHF ATC traffic from various locations, but there is HF receivers parked on HF MWARA freqs as well.
So point that browser to the website above and enjoy some long distance aero monitoring.
Larry