Originally Posted by OzExpat
My general "rule of thumb" for HF comms is :-
Low frequencies for low hours of the day.
High frequencies for high hours of the day.
Works for me.
Or "always go down at night"
.
Massey1Bravo,
The only HF airspace I fly in, the preferred frequency is stipulated by ATC. So you try that first, and if you have no luck getting through, you try one of the other ones.