BillTIZ
Final Approach
We used to call 121.5 and 243 "Navy Common" you could always pick up chatter on those freqs.
If I am not on FF for my primary freq while XC then I'll tune to the landing airport AWOS/ASOS/CTAF and see how far out I can pick it up and set up my radios for arrival. If the CTAF freq is all beeps squawks and squeals from to many airports on the same freq, I'll turn it down.
123.45 and 122.75 are not approved air to air freqs. In SoCal you may find an FBO ask you to get off their designated freq.
In glider country I'll monitor 123.3 and 123.5, designated air to ground freqs for glider and ballon chase crews.
If I am not on FF for my primary freq while XC then I'll tune to the landing airport AWOS/ASOS/CTAF and see how far out I can pick it up and set up my radios for arrival. If the CTAF freq is all beeps squawks and squeals from to many airports on the same freq, I'll turn it down.
123.45 and 122.75 are not approved air to air freqs. In SoCal you may find an FBO ask you to get off their designated freq.
In glider country I'll monitor 123.3 and 123.5, designated air to ground freqs for glider and ballon chase crews.