On Fri, 02 Nov 2007 23:24:25 -0700, Blue Streak wrote
in alt.radio.scanner:

Has anyone living close to a large airport heard any packet
transmissions like RTTY (the stuff you hear on shortwave) only in the
VHF Air band (118 - 137MHz)?

You are probably listening to ACARS transmissions.

http://en.wikipedia.org/wiki/Aircraf...rting_Sy stem


There are numerous ways you can monitor and decode ACARS transmissions received
on your scanner.
Theese are just a few links :


http://web.usna.navy.mil/~bruninga/acar.html

http://www.dxzone.com/catalog/Software/ACARS/

http://www.acarsonline.co.uk/

Regards

Peter