(Yet Another) Stand Alone WSPR Beacon Project
( Last Update 2012-4-08 )

This project is a stand alone(no PC)  2 Watt WSPR beacon designed with the idea to be solar powered and unattended in remote or mobile location.  The following features are implemented:


Ver 1.01     Preliminary User Manual

Rev 2       WSPR Beacon Schematic

Rev 1   WSPR Beacon PA Schematic

Rev 1.01  WSPR Beacon Firmware Source Code


block diagram

Key Components:

Initial Prototype board set:
pcb

Band Module
bandmodule


Main Components
pcb2
Click on for larger Image


Typical Spurious Output Plot in 1MHz bandwidth. 
1 Mhz Plot


Typical Phase Noise Plot in 100 Hz bandwidth.
100Hz

Harmonic Plot of 20m
(Since LP filter is >60dB, these harmonics may be generated from inline coupler diodes or coupled from the module connector power pin)

harmonics

Harmonic Filter Sweep
harmonic plot



RS232 Serial Terminal Session
terminal


Overnight Testing Beacon on 20m with Vertical Attached to Deck

bcn test
Click on for larger image

Current Status:
Issues:
Next Steps: