WSPRs in the attic

Here is a picture of the WSPR connections from my attic RPi settup.  This particular incarnation was using Ubuntu-Mate, 5 watts, and the AlexLoop antenna.  Even at 5 watts the AlexLoop would cause interference with my Mac Mini monitor.  Strong magnetic fields....

Fun stuff.  It's amazing how far you can communicate on 5 watts, albeit only a few pieces of digital information