1. Holux M-241 GPS Data Logger
Lt Col John Aylesworth CAP Deputy Director, CAWG Operational Readiness - Technology & Equipment

2. Holux M-241 GPS Data Logger Introduction and Use
The Holux M-241 is a GPS data logger capable of storing 130,000 waypoints.
The intended use for CAWG Civil Air Patrol is to record aircraft / vehicle ground tracks during a search.
This use will enable an accurate assessment of grid coverage for mission planning purposes.

3. Holux M-241 GPS Data Logger Prior to the Sortie
Follow the Quick Start Guide and checklist to prepare the unit for use by:
Installing a new AA battery
Erasing memory of any previous waypoints
Confirming settings

4. Holux M-241 GPS Data Logger At the Airplane
Follow the Quick Start Guide and checklist to:
Hang the M-241 from the cord near a window
Turn the unit ON using the small switch on the bottom

5. Holux M-241 GPS Data Logger At the Airplane
Start logging prior to departure by pressing the Enter button
Note the “running man” icon on the left of the display after pressing Enter

6. Holux M-241 GPS Data Logger After the Sortie is Complete
Follow the Quick Start Guide and checklist to:
Stop logging after landing or arrival by pressing the Enter button
Turn the unit OFF
Turn unit in to Debriefer (along with cable) to download waypoints

7. Holux M-241 GPS Data Logger Post Sortie Processing
Turn the unit ON
Use the USB cable to connect the logger to a computer or, alternatively, use a Bluetooth connection
Run the HOLUX ezTour for Logger software

8. Holux M-241 GPS Data Logger Post Sortie Processing
Select File | Read Device Log

9. Holux M-241 GPS Data Logger Post Sortie Processing
Select Read Log Only from the dialog box

10. Holux M-241 GPS Data Logger Post Sortie Processing
Select the file to download and click OK
… and ezTour will read the waypoints.

11. Holux M-241 GPS Data Logger Post Sortie Processing
ezTour will then display the ground track

12. Holux M-241 GPS Data Logger Post Sortie processing
Choose File | Save Project As and select a meaningful name such as: 12-T-6692 A JUL-12 N718CP GPS Log

13. Holux M-241 GPS Data Logger Post Sortie processing
This will save the ezTour project file with an *.itm filename extension
If photos were taken on the sortie, they may also be associated with the project as follows
Select Photo/Media | Add Media Files | From Folder
Navigate to the location where the photos from the sortie are stored and select the folder

14. Holux M-241 GPS Data Logger Post Sortie processing
ezTour associates photo’s with GPS coordinates and displays a camera icon along the track.

15. Holux M-241 GPS Data Logger Post Sortie processing
Select File | Export as KMZ and enter an appropriate filename such as: “12-T-6692 A JUL-12 N718CP GPS Log.kmz”
This exports a file you can use to view the track in Google Earth

16. Holux M-241 GPS Data Logger Post Sortie processing
Track Displayed in Google Earth

17. Holux M-241 GPS Data Logger Post Sortie processing
Turn off the GPS Logger and unplug it from the PC
Return the GPS Logger to the aircrew / ground team
Upload / Send *.itm and *.kmz files and photos along with sortie worksheets to Planning for analysis.