Wintec WBT-201/WBT-202 (.tes, .tk1, .tk2)
.tk1, .tk2 and .tes are the raw track-download formats of Wintec's WBT-201 and WBT-202 Bluetooth GPS data loggers — one binary record per logged position.
At a glance
| Extension | .tes, .tk1, .tk2 |
| Encoding | binary |
| By | Wintec Co., Ltd. |
History
Wintec Co., Ltd. is a Taiwanese GPS-hardware maker. The WBT-201 was a Bluetooth data logger with auto on/off and a "push to log" button for marking waypoints; the later WBT-202 added a u-blox 5 GNSS chipset, a microSD card slot and a bundled WBT-Tool for matching logged tracks to a camera's photos by timestamp. No specific release dates are documented for either device.
Where it is used
Both devices log positions to their own memory during an outdoor activity, then transfer the recorded track to a PC over Bluetooth or USB for viewing, geotagging photos, or converting to another format.
Structure
All three formats share the same 16-byte trackpoint record — a flag byte pair marking track-start/push-to-log/over-speed events, a bit-packed date/time, 4-byte latitude and longitude as integer degrees scaled by 10,000,000, and a 2-byte altitude in metres — differing only in the file header: .tk1 and .tk2 each carry a 1024-byte header naming the device and log version (with different header layouts, identified by a "WintecLogFormat" or "WintecLogTk2" descriptor string), while .tes has no header at all and starts directly with trackpoint records.
How widespread
Both the WBT-201 and WBT-202 are discontinued consumer GPS loggers from the Bluetooth-logger era; files in these formats today are old track downloads from one of these devices rather than an export from a currently-sold product.
RouteConverter support
| Reads | Wintec WBT-201, Wintec WBT-202 |
RouteConverter reads this format but cannot write it.
RouteConverter only reads Wintec WBT-201/WBT-202 files, natively without GPSBabel; writing back to any of the three formats is not supported.