'NC' Hi-Medfer

A Puzzle for the LF Scions:

NC - Dex's Hi-Medfer signal around 1704.983kHz coming in a storm. For the uninitiated this is 100mW DC input TX, with a less than 10' long antenna at some 400+ miles. See Dex's description.

And this is what all the fuss is about. A capture of Dex's Hi-Medfer, showing distinct separate simultaneous traces. We hypothesise multiple discrete propagational paths, one in the process of lengthening with respect to the other(s) (F-layer rising?) and the doppler'd signal showing beneath.

Any comments or insight, folks?

© Steve Dove, W3EEE, 2003