WSPR beacon


WSPR (pronounced « whisper ») stands for « Weak Signal Propagation Reporter ». It is a protocol, used for weak-signal radio communication. The protocol was designed, and a program written by Joe Taylor, K1JT. This project is a stand alone WSPR beacon complete  and a radio transmitter including low pass filters. The beacon, once configured, will run stand alone transmitting a WSPR sequence each even minute.

WSPR beacon features:

Arduino nano (atmega328P) based microcontroller :

  • Support Arduino IDE 1.0+ (OSX/Win/Linux)
  • Power via USB or External Source + 5v
  • Built-in USB
  • 2 I/O Pins (for GPS receiver)
  • Removable filter
  • AD9850 DDS
  • RTC DS3231
  • BS170 power amplifier 0.1W
  • Fit in Aluminium Instrument Box Enclosure Case 100x66x43
  • Status LED.
  • PCB available (f4goh at
  • diaporamas en français ici
  • wspr ebay links

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WSPR beacon