GPS clearance puzzle

Roy Smith wrote in message ...
Apparently, if you file IFR HPN - MMU, you get a clearance which starts
"CMK CMK275R SAX039R SAX" (i.e. fly outbound on the CMK 275 until you
intercept the SAX 039, then fly that inbound to SAX). In the good old
days of 2 VOR receivers, this is trivial to fly; the radios don't know
or care that the cross-radial fix you're going to doesn't have a name.
But, how would you fly that with a GPS?

I've been puzzling over that one for a week or so now, and the best I
can come up with is to use the GPS's OBS mode to track outbound on the
CMK 275, and set up a VOR receiver to indicate the crossing radial.

Can anybody figure out a way to set it up purely on the GPS? I'm using
a CNX-80, but it might be interesting to see how other units would do it
too.

Use the GPS's OBS mode to fly outbound on the radial from the first
VOR. Then call up the second VOR on the GPS (for example through the
Nearest function or the VOR page or on any other information page).
There you will see the actual radial/bearing from or to the second VOR
depending on how you have set it up. Once you reach the required
radial from the second VOR you go direct to or continue using the OBS
mode with the second VOR as a new waypoint.

Gerd, ATP
T182 C-FDOW

gwengler wrote:
Use the GPS's OBS mode to fly outbound on the radial from the first
VOR. Then call up the second VOR on the GPS (for example through the
Nearest function or the VOR page or on any other information page).
There you will see the actual radial/bearing from or to the second VOR
depending on how you have set it up. Once you reach the required
radial from the second VOR you go direct to or continue using the OBS
mode with the second VOR as a new waypoint.

Sounds like a good plan, thanks!

Roy Smith wrote:

Sounds like a good plan, thanks!

Yes, thanks! I was going over the 430 manual last night trying to find
something of this sort, but I missed it.

Those flying behind the navcoms in newer Cessnas have a similar/easier
option. The nav side can be set to display the to/from radial instead of
the standby frequency. I liked the awareness that provided, given that I
could see "how close I was" to some chosen radial even before the needle
had "come alive".

- Andrew

Andrew Gideon wrote:
Roy Smith wrote:

Sounds like a good plan, thanks!

Yes, thanks! I was going over the 430 manual last night trying to find
something of this sort, but I missed it.

Those flying behind the navcoms in newer Cessnas have a similar/easier
option. The nav side can be set to display the to/from radial instead of
the standby frequency. I liked the awareness that provided, given that I
could see "how close I was" to some chosen radial even before the needle
had "come alive".

You can do that on the CNX-80 too. In NAV mode, hit the MON soft-key
to put it in monitor mode. It then shows you the from radial of the
VOR in the standby slot.