Reception of G6ALB's earth mode (through the ground) VLF WSPR signal on 8.970kHz. Transmit "antenna" was an earth electrode pair (about 20m apart in the ground) with 44W input from an audio power amp fed with WSPR from a PC. Receive antenna was an 80sq m vertical wire loop in the garden fed to a VLF up-converter feeding the FT817 and SignaLink USB interface and a PC running WSPR software. S/N was -17dB which is a very respectable signal level.
