from Robin in February 2007: I'm grateful to David for his permission to include this, which helped another get GPSSppc working with GPS.

Here is a tidied iPAQ / Navman instruction.

To make the iPAQ work with GPSSppc.

This instruction is based on the Compaq iPAQ 3970 upgraded from Windows 2002
to 2003, with Navman 3450 GPS jacket. Microsoft .NET CF 2.0 is installed.

1. Complete the download as instructed by the web page:

2. You need to know what COM port the iPAQ uses for the Navman jacket.
My Navman com port is 7, I found out by running SmartST Professional which
is the software that came with the Navman jacket. The GPS Status screen
told me the COM port, but not the baud rate or handshake settings.

3. Run GPSppc. To run it go into File Explorer on your iPAQ and run
GPSSPPC from wherever you copied all the files to when you downloaded them.

4. GPSSppc starts with a blue-background information start screen and a
voice message. When this finishes the 22 Armitage Court map comes up. Tap
the sun symbol once. When any voice messages finish the screen will change
to show a row of icons.

5. Tap the speaking face icon to make it stop speaking. Speaking slows
proceedings so you don't want it just now.

6. Tap the sun icon again and the screen changes to the trip record /
playback with default filename newtrip.nme on it. Tap the sun again and you
are now on the settings screen. You are interested in SAVE and COM just

7. Set the COM port first. Drag the stylus on the com port number
beside COM to select it. Bring up your virtual keyboard (unfortunately
hiding the area you are typing into), tap the com port number you found
earlier, and close the virtual keyboard again. Check that the COM number is
what you wanted. On my own iPAQ it is COM7. Tap the COM button and you
will see a message along the bottom "Opening COM7 at " and whatever the baud
rate settings are.

8. Now set the baud rate in the same way and tap on the COM button
again. For the Navman 3450 it is 57600,N,8,1 so you should only have to
change the baud rate from 4800 to 57600. You should see your new settings
being confirmed along the bottom.

9. Tap on SAVE. You will see the message "Saving GPSS.CFG". That will
apply the settings automatically in future.

10. You won't be receiving data yet, despite the message about opening
the com port.

11. Do not exit this screen, but press the iPAQ power button to switch
it off. Switch it on again - it only needs to be off for a second or three
- and when it comes back on again in the same screen you will hear the voice
message "I am receiving GPS data!". The map will change to the world map at
the GPS hardware's default position; mine looks like China, 360000N7200000E.
You are now up and running. The map will move or change and the position
indicator will appear on screen once you get a satellite fix.

12. Each time you run GPSSppc you may have to cycle the power to start
receiving GPS data.

13. If you use the trip recording facility then you can only play back
when not receiving GPS data. If you're receiving GPS data and decide to
play a trip back, tap on COM in the settings screen and that will stop the
data coming in. Then you can go to the trip screen and replay a trip. If
you're replaying a trip and you cycle the power then the trip stops and you
start receiving GPS data.

David Bouchard