[Lowfer] 55.5 kHz

[Garry Hess]

David, I'm using an e-probe and that's particularly susceptible to IM 
falseing. No doubt the wide signal at 50.36 kHz was the second harmonic 
of NML4, whose fundamental is very strong and at approximately 25.2 kHz. 
However, the 49.2 kHz is different. It wasn't wider and in fact it 
dekeyed briefly once while I was looking at the waterfall. Also, it's 
been reported by a listener in Greece to 
http://www.classaxe.com/dx/ndb/rww/?mode=signal_list.

I just center on the visual FSK waterfall spectrum, so frequency 
accuracy is about 0.1 kHz. I listed the unknown signal as 50.36 kHz 
because there were carrier lines at plus/minus 100 Hz audio using 49.36 
kHz, USB as the tuning frequency.

It will be interesting to see if 518 kHz is well behaved tonight.

73, Garry, K3SIW, EN52ta, Elgin, IL