"Ron Rosenfeld" wrote in message =
...
On Fri, 23 Apr 2004 20:54:39 -0400, Roy Smith wrote:
=20
How does it know what the wind is?

My club has the CNX-80 in four of our planes now. It's a cool radio, =

but there is certainly a learning curve. I've got about 25 hours =
behind=20
box now, and havn't learned everything there is to know about it yet.
=20
I don't know that it knows the winds. But it knows the ground track =
and
ground speed. It probably assumes a constant airspeed and makes
computations that way. It was interesting seeing the *shape* of the
holding pattern (as drawn on the screen) change.
=20
=20
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)

The Windows simulator for the CNX80 also changes the shape
of the hold if you alter its simulated speed during the hold.
Is that reasonably faithful to what you noticed in flight?
---JRC---