After a couple of minor modifications (different soundcard, thicker piece of wire from the top of the loading coil), I ran a test carrier from 13:15 to 15:15 UT. I briefly ventured pushing the drive
Measures 0.12 fT with 15.1 dB S/N in 139 uHz http://abelian.org/vlf/tmp/160419a.gif EbNaut decoder likes it, 6 chars with 8 second symbols of 8K19A at -0.7 dB. -- Paul Nicholson --