its always going to be 123.45 for me..
From the Transport Canada AIM:
5.13 VHF Frequency Allocations
5.13.3 Air-to-Air
For air-to-air communications between pilots within the Canadian Southern Domestic Airspace, the correct frequency to use is 122.75 MHz; in the Northern Domestic Airspace and the North Atlantic, the frequency allocated by ICAO is 123.45 MHz.
http://www.tc.gc.ca/CivilAviation/publications/tp14371/COM/5-0.htm#5-13-3The intent is to use 123.450 in the above designated areas for operational purposes only. 123.450 is also designated air-air in the New York Oceanic airspace over the Atlantic and the Caribbean routes. I've heard a few guys get chewed out on 123.450 from some airline types for using this frequency for idle chit chat. Standard airline procedure is to select 123.450 on VHF #1 and 121.500 on VHF #2 when operating in these HF/CPDLC areas when no ATC VHF is available, so if you are operating in or close to these areas be aware a lot of people will be monitoring. As a common courtesy most pilots will switch to a discrete company frequency or another frequency besides 123.450 if they want to yap. Although you wouldn't believe a lot of the stuff you hear on 123.450 in the middle of the Atlantic sometimes.
DJ
- B767 Captain