DL1DUZ's blog

Check out http://dl1duz.darc.de/Page16.html if you are interested in building your own multiband WSPR-beacon (AD9850 DDS, HD44780 Display, remote GPS unit based on NEO-6M for locator & time, Arduino-controlled).

I've just finished work on my 200mW WSPR-beacon based on Arduino/AD9850 DDS/HD44780 LCD. All details like source-code, C-libraries, antenna design, schematics etc. can be downloaded from here:

http://dl1duz.darc.de/Page14.html