Cambridge computers

What are the diffrences betwenn the L/NAV an S/NAV?

At 04:18 06 January 2007, Solo wrote:

What are the diffrences betwenn the L/NAV an S/NAV?

Solo

You will find the answers on the Cambridge FAQ page
below:

http://www.cambridge-aero.com/FAQlna...v%20lnav%20dif

The S-NAV was the original (and IMHO better) instrument
and the less fully featured L-NAV was added to the
range a few years later.

John Galloway

Hi,

The L-NAV does everything an S-NAV does, except that the S-NAV has a
waypoint database and you can create tasks. There may be a few other
features, but that was the main thing. When the GPS-NAV is connected to
either of them, you use the waypoints and tasks in the GPS-NAV, so there is
no need for them in the S-NAV. So at the end of the production they didn't
sell many S-NAVs - only L-NAVs. But there is nothing wrong with using an
S-NAV with a GPS-NAV.

Paul Remde

"Solo" wrote in message
...

What are the diffrences betwenn the L/NAV an S/NAV?




--
Solo

The real trick there is finding the GPS-NAV. I couldn't find one and
ended up with a Colibri I got from Paul. It seems it will work quite
well with my S-NAV, at least on my desk. I have yet to fly with all
this. If I run across a GPS-NAV for a good price I might pick it up
but without the GPS-NAV all that seems to be missing is the goal
altitude and you also don't have the final glide around a turnpoint.

How often is the goal altitude really needed? Here, unless you're on
your way to the last turnpoint or home you want to stay in the best
lift which is usually above a certain altitude. It often has little to
do with the ground elevation of the goal and more to do with the
airmass. So you'd have to manually enter your "floor" altitude anyway.
If you have something like GNII on a PDA you have the final glide
around a turnpoint based on the GPS data and air and GPS speed-to-fly
info on the S-NAV.

The bottom line is all this stuff can only tell you what's been going
on behind you and not what's going on with the airmass ahead. It still
comes down to the pilot.

I seem to have gotten off track but I didn't see anything in the S-NAV
or manual about a waypoint database. Mine is the current version 7.9.
Maybe that was dropped from earlier versions since it is available in
the GPS-NAV.

Bob


On Jan 6, 7:30 am, "Paul Remde" wrote:
Hi,

The L-NAV does everything an S-NAV does, except that the S-NAV has a
waypoint database and you can create tasks. There may be a few other
features, but that was the main thing. When the GPS-NAV is connected to
either of them, you use the waypoints and tasks in the GPS-NAV, so there is
no need for them in the S-NAV. So at the end of the production they didn't
sell many S-NAVs - only L-NAVs. But there is nothing wrong with using an
S-NAV with a GPS-NAV.

Paul Remde

"Solo" wrote in ...





What are the diffrences betwenn the L/NAV an S/NAV?

--
Solo- Hide quoted text -- Show quoted text -

One more thing. The S-NAV is black around the screen and the L-NAV is
more of a silver. The S-NAV looks better in the panel, at least my
panel.



On Jan 6, 9:28 am, wrote:
The real trick there is finding the GPS-NAV. I couldn't find one and
ended up with a Colibri I got from Paul. It seems it will work quite
well with my S-NAV, at least on my desk. I have yet to fly with all
this. If I run across a GPS-NAV for a good price I might pick it up
but without the GPS-NAV all that seems to be missing is the goal
altitude and you also don't have the final glide around a turnpoint.

How often is the goal altitude really needed? Here, unless you're on
your way to the last turnpoint or home you want to stay in the best
lift which is usually above a certain altitude. It often has little to
do with the ground elevation of the goal and more to do with the
airmass. So you'd have to manually enter your "floor" altitude anyway.
If you have something like GNII on a PDA you have the final glide
around a turnpoint based on the GPS data and air and GPS speed-to-fly
info on the S-NAV.

The bottom line is all this stuff can only tell you what's been going
on behind you and not what's going on with the airmass ahead. It still
comes down to the pilot.

I seem to have gotten off track but I didn't see anything in the S-NAV
or manual about a waypoint database. Mine is the current version 7.9.
Maybe that was dropped from earlier versions since it is available in
the GPS-NAV.

Bob

On Jan 6, 7:30 am, "Paul Remde" wrote:



Hi,

The L-NAV does everything an S-NAV does, except that the S-NAV has a
waypoint database and you can create tasks. There may be a few other
features, but that was the main thing. When the GPS-NAV is connected to
either of them, you use the waypoints and tasks in the GPS-NAV, so there is
no need for them in the S-NAV. So at the end of the production they didn't
sell many S-NAVs - only L-NAVs. But there is nothing wrong with using an
S-NAV with a GPS-NAV.

Paul Remde

"Solo" wrote in ...

What are the diffrences betwenn the L/NAV an S/NAV?

--
Solo- Hide quoted text -- Show quoted text -- Hide quoted text -- Show quoted text -

I noticed that too. But a quick call to Cambridge and they sent me a new
front stick-on panel for my LNAV that was black (meant for an SNAV). A felt
tip marker took care of blacking out the "SNAV" and I was in business.
Charge = $0

bumper
wrote in message
ups.com...
One more thing. The S-NAV is black around the screen and the L-NAV is
more of a silver. The S-NAV looks better in the panel, at least my
panel.



On Jan 6, 9:28 am, wrote:
The real trick there is finding the GPS-NAV. I couldn't find one and
ended up with a Colibri I got from Paul. It seems it will work quite
well with my S-NAV, at least on my desk. I have yet to fly with all
this. If I run across a GPS-NAV for a good price I might pick it up
but without the GPS-NAV all that seems to be missing is the goal
altitude and you also don't have the final glide around a turnpoint.

How often is the goal altitude really needed? Here, unless you're on
your way to the last turnpoint or home you want to stay in the best
lift which is usually above a certain altitude. It often has little to
do with the ground elevation of the goal and more to do with the
airmass. So you'd have to manually enter your "floor" altitude anyway.
If you have something like GNII on a PDA you have the final glide
around a turnpoint based on the GPS data and air and GPS speed-to-fly
info on the S-NAV.

The bottom line is all this stuff can only tell you what's been going
on behind you and not what's going on with the airmass ahead. It still
comes down to the pilot.

I seem to have gotten off track but I didn't see anything in the S-NAV
or manual about a waypoint database. Mine is the current version 7.9.
Maybe that was dropped from earlier versions since it is available in
the GPS-NAV.

Bob

On Jan 6, 7:30 am, "Paul Remde" wrote:



Hi,

The L-NAV does everything an S-NAV does, except that the S-NAV has a
waypoint database and you can create tasks. There may be a few other
features, but that was the main thing. When the GPS-NAV is connected
to
either of them, you use the waypoints and tasks in the GPS-NAV, so
there is
no need for them in the S-NAV. So at the end of the production they
didn't
sell many S-NAVs - only L-NAVs. But there is nothing wrong with using
an
S-NAV with a GPS-NAV.

Paul Remde

"Solo" wrote in
...

What are the diffrences betwenn the L/NAV an S/NAV?

--
Solo- Hide quoted text -- Show quoted text -- Hide quoted text --
Show quoted text -