Nielsen-Kellerman ClearNav - Manual (Page 29)

NK ClearNav Manual • Version 0.5 • July 3, 2008
Page 29 of 86
The good news is that the ClearNav supports several types of waypoint and airspace data files – to
make it easy to find data for your area. However, there are some recommended file types. Using the
recommended file types will allow the software to work at its best and display the largest amount of
information.
Any experienced pilot will tell you that sometimes it is best to limit the amount of information on the
moving map. Just because it is possible to display vast amounts of data on the map at once does not
mean that displaying everything will be a good thing. Sometimes it is good to hide certain types to
data to limit the amount of screen clutter. Fortunately, the ClearNav makes it easy to enable and
disable certain types of data when desired.
2.3.1 Waypoint Files
Waypoint files consist of a list of navigation points to display on the map. There are several types of
waypoints. They include airports, contest turnpoints, landing points (fields known to be good places to
land when necessary), etc. The ClearNav supports waypoint files in the formats listed below. Links are
provided to detailed data and example files for each file type.
When transferring waypoint files to the ClearNav, put the desired waypoint files into the “Map Data” /
“Waypoints” directory on the USB Flash Drive or SD memory card. The files will be pulled into the
ClearNav upon start‐up.
2.3.1.1 Worldwide Soaring Turnpoint Exchange (.stx) files
The best type of waypoint file to use in the ClearNav is the Worldwide Soaring Turnpoint Exchange
format. It is highly recommended that you use this type of waypoint file whenever possible. If you
use this format airports will display on the map with the runway shown with the correct orientation.
We’ll call them .stx files. This waypoint file format is preferred over other compatible types because it
can be extended easily to include types of data not supported in other waypoint file types. The great
news is that .stx files are already available on the Worldwide Soaring Turnpoint Exchange for every
soaring site listed there. Since the file is a simple tab separated text file, it is also easy to edit existing
files manually, or create new files.
Description:
http://soaringweb.org/TP/stx.html or http://soaringweb.org/TP/nk_clearnav.html
Example File: http://soaringweb.org/TP/Albert_lea/albert7c.stx
2.3.1.2 Cambridge (.dat) files
This format is OK, but it does not include as much information about each waypoint.
Description:
http://soaringweb.org/TP/cai.html
Example File: http://soaringweb.org/TP/Albert_lea/albert7c.dat
2.3.1.3 SeeYou (.cup) files
This format is OK, but it does not include as much information about each waypoint and it supports
only one attribute (Turnpoint, Airport, Landable, etc.) for each waypoint. The 2 file formats above