Experimenting with a new antenna and had this annoying signal on 100 KHz. Oh darn the preamps in oscillation. But how odd that it sounds like a LORAN signal. Honestly a bit hard to believe. Main point. In checking a SDR in Wa state it is on the air. The GRI 5990. Tom should be plenty strong for you. I had no insights about this and its simply pot luck that I heard it. Regards Paul