As I've mentioned before, 123.5 is our field frequency and is shared by a number of other users. 123.3 is often virtually unusable since it was allocated to a local commercial service for communicating with their fleet of aircraft. You have to sit through high-power transmissions of Hobbs readings, arrival times and destinations before you can get a word in edgewise.

I'm not sure what frequency would work in Arizona, but not these two!

Mike