Highway Manager - A gas mileage program for the Palm platform
"Software in your pocket" tm


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Navio is quite easy to use! Unless noted, both the Windows and Pocket PC versions work the same way and screenshots are used interchangeably.

German Documenation (PDF).


You will first need to connect your GPS unit to your desktop computer or Pocket PC using the correct cable. If you have a Bluetooth GPS, you will need to bond it to your PC/Pocket PC using the Bluetooth manager. Read the documentation that came with your GPS for further help. In Pocket PC 2003 you will be asked after the bonding if you want to link the GPS to a serial port. You MUST answer YES.


Copy Navio_Win.exe to any directory and start using it immediately. Go to the Hardware window and configure the port that your GPS unit is connected to. Make sure that your GPS receiver is set to output data in NMEA format.

Pocket PC

Connect your Pocket PC device to your desktop computer via ActiveSync, run Navio_Install_PPC.exe. Afterwards you can click on Start Menu > Programs and you will see an icon for Navio. Configure the correct port for your GPS unit from the Hardware window. Make sure that your GPS receiver is set to output data in NMEA format.

*  For Navman, make sure you have installed the latest service pack and the serial driver v3.1.6.

*  For help getting Navio to work on a Pocket PC where TomTom 3 is installed, see our support page. For TomTom Bluetooth GPS use Navio v2.3 or higher.

Main screen

The main screen shows the latest data received from your GPS unit. You can begin using Navio right away by selecting the right COM port that your GPS unit is using in the Hardware window and pressing the Start button.

The green/yellow/red light in the top right corner of the window indicates if the GPS unit currently has a fix (green), an unreliable fix (yellow, see chapter section entitled GPS Accuracy) or no fix (red).

The time displayed is the time received from the satellites used for the fix in either UTC (GMT) or local time.

The satellites display shows the current satellites that your GPS unit knows about. Satellites that the GPS unit knows about but does not receive any signal information for, are displayed in red. The closer a satellite is displayed to the center point, the higher it is above the horizon. The center point indicates 90° elevation.


Navio can display the presented data in different units. From the main screen you can determine how specific values will be displayed throughout the entire program. Units can also be changed in the Hardware window.

- Click on the position field to alternate display between WGS84 coordinates (d°m's", d°m.m' and d.d°), UTM and various country grids.

- Click on the altitude field to alternate the display between meters and feet.

- Click on the speed field to switch between kilometers, miles and knots.

- Click on the time to alternate the display between time in UTC or in your local time zone.


Throughout the program, click on the compass wheel to alternate between normal view and compass view. In normal view, the needle points in the direction of the heading. In compass mode, the needle always points up and it's the compass wheel itself that rotates. Compass mode is useful when following a specific heading with your Pocket PC - point your Pocket PC out, turn until in the right direction, and go straight in the direction pointed by your Pocket PC. Compass mode is indicated by a C in the top right corner of the compass wheel.

Click on the zoom button to zoom the compass to full screen.


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