In my last post I asked if there were others running homebrew gear on WSPR. I am not alone! Paul, M0XPD, has put together a rig far more sophisticated than mine. Paul writes:
You ask if there are any others running h/b in WSPR...
My 50mW multi-mode beacon runs WSPR, DFCW and S/MT Hell on a 10-minute, frequency-hopping cycle.
It is entirely stand-alone - severing the umbilical cord to the PC gave me a really good feeling!
I'm currently working on a set of filters (BP and LP) to allow me to run on other bands (currently I'm on 30m).
Description on my blog: http://m0xpd.blogspot.com