is a weather information encoder which, when connected to a compatible weather staion and a radio,
will transmit the weather data at an adjustable rate.
It is a construction project based on the
and provides an inexpensive way to transmit
weather information without the need for a full TNC.
WXTrak is configured by connecting to a computer's serial port, and running a
simple configuration tool which allows setting of all user options.
It transmits the APRS weather protocol. Since it is designed around the
TinyTrak3, It is available with an optional case.
Currently supported weather stations include the Radio Shack WX200, the Oregon Scientific WM-918, and the
Peet Brothers Ultimeter 100, Ultimeter 800, Ultimeter 2000, and Ultimeter 2100.
Davis weather stations with the WeatherLink APRS adapter can use TinyPack to transmit weather data for APRS.
Note: Some users have found that some Peet Bros weather stations will not output serial data when connected to a WXTrak. This can be corrected by placing a 4.7K resistor between serial pins 2 & 3.
WXTrak Kit and Case - $33.
Includes a WXTrak chip, sheared PCB, pre-cut case, and all components excluding cables.
WXTrak Built and Tested with Case - $42.
For those not interested in soldering together the kit. This will come with a sheared PCB.
WXTrak Chip - $18.
With this chip, a TinyTrak, TinytrakII, or TinyTrak3 can be converted to a WXTrak.
Note:A Female to Female Null Modem Gender Changer is needed to connect a WXTrak to the computer for configuration.
Radio and Power Cables available for many common radios. Click
After ordering a kit or a chip, be sure to download
the configuration software and documentaion.
Right click the link and choose "Save As..."
Please do not distribute WXTrak or TinyTrak software, firmware, or documentation without
written permission from the author.
TinyTrak Group at Yahoo! is very active, and many of the posts may be applicable to WXTrak .
Read through the archives for help, or post questions to the members of the group.
You can also send questions via eMail to
Axel Fischer, DL3OBP, has created a Palm based WXTrak Config program and WX simulator at
Radio connection diagrams can be found at
Kantronics compatible cables will work with WXTrak.