This format can...
This format is the serial download protocol for the MTK chips. Mediatek's MT3301/3179 (MTKv1) and MT3318 (MTKv2) chips are used in a large number of products sold under different names.
Many GPS products, especially of the data logger variety, expose the Mediatek protocol to the user via USB. Some modify Mediatek's protocol in minor ways, but the core protocol is very commonly seen in loggers.
The Holux M-241 and GPSport 245 are examples of a device using an incompatible variation of the MTK protocol.
The following products are known or are expected to work with this module. As the products are typically very low cost, they tend to have a short product life cycle and are often imported to different areas under different names. Keeping track of the list is difficult. Often the "same" GPS is sold in different plastic or with different Windows software or different options such as compass or motion sensors or charging cables with different model numbers. If you can confirm success with others, please share with us.
Table 3.6. Devices supported by MTK module
The Mediatek chip offers a native serial port. Data logger designers frequently pair this with commodity USB/Serial converter internally. So these devices typically look like Prolific, FTDI, or Silab usb/serial devices to the host OS. You'll need drivers for that whatever chip your product uses for your operating system.
Downloaded data will be stored in data.bin file in the current directory together with the choosen output format. This is a rather uncommon feature in GPSBabel's formats and is likely to change in future versions.
See mtk-bin on how trackpoints/waypoints are handled
Example 3.28. Command showing MTK download track and waypoints and erase on Linux
gpsbabel -t -w -i mtk,erase -f /dev/ttyUSB0 -o gpx -F out.gpx
Most of the loggers cannot receive bluetooth commands; they can only send data. Since GPSBabel needs to send commands to the GPS device it won't work. Download the data using the USB cable instead.
Erase device data after download.
This option erases the track log from the device after download.
Only erase device data, do not download anything.
This option will only erase the logger data. No data is downloaded.
This option is typically used as a second step after the data has been downloaded and verified.
Enable logging after download.
This option will enable the logger after download.
By default the logger is re-enabled when download is finished if previously were enabled. But if the download is aborted or failed the log functionality won't be enabled again.