Jim Macklin wrote:
http://www.fly-ul.com/navfreq.html


Not all usable frequencies are listed on a chart. The
question was for air to air, general communications not ATC.
AFD lists all the ATC frequencies assigned, but the AIM
lists other frequency assignments.


No actually, 122.9 is NOT air-to-air. It's the multicom
frequency for traffic calls, etc... for airports without
a designated unicom frequency.