Picked up a signal on 128kHz, and later 256kHz, just repeating a dot over and over. No idea if thats local or other. Never heard nor seen it before.
293 kHz 0532UTC FBY NDB Fairbury, NE
329 kHz 0541UTC PMV NDB Plattsmouth, NE
Here is the 128 kHz signal:
http://www.sndup.net/nwtzgEDIT:
Ever since I swapped the loop for the inverted L, this signal has disappeared. I think it was local.