Beacon

• WSPR: Arduino sederhana

Referensi

• http://www.g4ilo.com/wspr.html
• http://oh2gqc.wippiespace.com/WSPR_on_Ubuntu.html
• http://blog.riyas.org/2015/01/weak-signals-and-random-piece-of-wire-arduino-ad9850-WSPR.html