Those two radios will do nicely for Airband monitoring! Just conventional AM mode.
How about the N65 Chambersburg airport:
CTAF/Unicom 122.800
Approach / Departure: 124.1
Check out airnav.com to see others near you like:
Hagerstown:
CTAF 120.300
Unicom: 122.950
Tower: 120.3
Emergency: 121.5 / 243.000
Gettysburgh:
Unicom 122.800
RCAG approach/departure 134.150 / 227.125
Throw in 123.450 air-air
But don't just listen at home. Many of these airports, especially general aviation are open to the public, although do not just wander onto the tarmac - obey the warning signs. They may even have a visitor center. Take your 74 with you, and grab a bite if they have any food and enjoy the ride for a few hours!