Mark wrote:

Yes, it's interesting. I have both 8906 and 8825 listed as NAT-A, but of
course that may not be right.

Listening to them currently, they keep telling aircraft "primary, this
frequency, secondary 8825". This is a curious choice of secondary frequency,
don't you think?

Not really, they are relying on propagation conditions. They know what they're
doing, they've been at it for some time.



Usually, they assign a secondary that is on a different band than the
primary. For example, in Auckland, 8867 can be primary, with 13261 as
secondary during the day. At night, its usually 5643 primary and 8867
secondary.

Makes me wonder what good a secondary very close to the primary would be?
Maybe only 8 MHz is usable near Azores right now?

Mark.

"dxAce" wrote in message
...


Mark wrote:

Coming in nicely right now (09:30 UTC) into Auckland, New Zealand, on
8906
kHz USB.

MWARA NAT-B. Working lots of aircraft, secondary is 8825 kHz.

I think 8906 is a NAT-A frequency and 8825 is a NAT-E frequency. Both used
by
Santa Maria of course.


dxAce