Downloading software from the Sirtrack website:

Go to www.sirtrack.com. In the upper right corner of the home page there is a 'MEMBER LOGIN' button. If you cannot access this area of the website, please email This email address is being protected from spambots. You need JavaScript enabled to view it. and request the current user name and password. In this area of the website you will be able to download the latest versions of our software and user guides.

Difficulties installing or running Sirtrack software in Windows Vista or Windows 7:

First try installing the software by right-clicking on the installer icon and selecting 'Run as Administrator'.

Second is to try running the software itself by right-clicking on the icon and selecting 'Run as Administrator'. If this works then you can right-click on the shortcut and select 'Properties'. Now switch to the 'Compatibility' tab and tick the 'Run this program as administrator' box.

Difficulties installing or running Sirtrack GPS Logger software for G2C model collars in Windows Vista or Windows 7:

When you install WGPS software in Windows Vista or Windows 7 you may see the error message "Component 'commx.ocx' or one of its dependencies is not correctly registered: a file is missing or invalid". To fix this issue it is necessary to manually register a component of the software. To do this, go to 'Start' > 'All Programs' > 'Accessories', right-click on 'Command Prompt' and select 'Run as administrator'. A text window with a black background will open. Type in 'cd \Program Files\Sirtrack GPS Logger' for 32 bit versions of Vista and 7, or 'cd \Program Files (x86)\Sirtrack GPS Logger' for 64 bit versions and hit 'Enter' . Next type 'regsvr32 commx.ocx' and press 'Enter'. You should see a message saying "DllRegisterServer in commx.ocx succeeded.". You can now close the command prompt window and run the Sirtrack GPS Logger software.

WGPS Datalogger, G2C model collars - Communications error: No/Invalid response from DL

Always check the serial cable connectors are fully mated.

If you have the tiny black connectors, please carefully inspect for bent, damaged, or broken pins in the socket, or damage to the plug. If the socket is damaged, please return the collar to Sirtrack to download the data and/or repair the connector. If the plug is damaged please contact Sirtrack to arrange for repair or replacement.

Ensure the switch is switched to the 'Datalogger' side and that the LED is glowing brightly. If the LED is not lit, or looks dim, try replacing the batteries in the interface with fresh ones. Note that it is not recommended to use rechargeable batteries in the interface as these are only 1.2V, not 1.5V as for alkaline batteries.

Check which COM port the interface is connected to. If you are using a USB to serial converter you should right-click on the 'My Computer' icon on the desktop or in your 'Start' menu and select 'Manage'. Now go to the 'Device Manager' and select 'Ports'. The correct COM port will be identified as 'USB Serial Port (COMnn)' where nn is the number allocated by Windows. If you are unsure, disconnect the USB connector and reconnect and see which 'Port' disappears and reappears.

Fastloc (F1, F2 and F4 product ranges)

Too few sats.

One possibility is that the logged times were based on a pc time in the wrong timezone. The software sets the onboard clock to UTC based on the pc time and timezone, so both must be correct. The result is that the timestamps on the locations may be offset by a fixed number of hours. It is necessary to increment and decrement the timestamp by whole hours (3600 secs) to establish the correct timezone offset for successful Locsolving of Fastloc locations.