Garmin 430 question

"Sam Spade" wrote in message
...
Thanks for your help.

Indeed it does work in the 530 trainer. I guess I was hung up on the
reference waypoint changing after I created the intersection. The
handbook says that doesn't matter, which of course it doesn't. ;-)

Out of curiousity, I opened my 430W manual last night and it turns out that
the note about using two radials to generate a user waypoint is NOT in my
version. It states, "The second reference waypoint field (REF WPT) is a
temporary reference only-not a reference that will be stored with the user
waypoint. By default, this field will display a radial from the nearest VOR.
However, you can select any waypoint-by identifier-to use as a reference in
this field."

So it seems Garmin is not consistent in documenting this function despite it
identical operation in both units. I see why it threw you for a bit of a
loop. Using the above note I would expect the secondary reference waypoint
to change with no further functionality possible.

The 530 and the 530W created a slightly different position for the
intersection of V-264 and V-137.

And, the official FAA position is slightly different than those two.
The difference is reasonable for an en route airway intersection. I
wouldn't want to be designing IAPs using this method, though. ;-)

That's interesting. I wonder what the error works out to be. The difference
between the 530 and 530W is even more intriguing. I wonder if the difference
is a function of the software logic, the database version or both.


Marco