I captured this screen shot from FO-20 today at about 1850 UTC over western US.

https://drive.google.com/file/d/0B-Jez46MB5RaSUxMNmw3dF80bFE/view?usp=sharin...

Note the repeating signal every 3 kHz around 4:00 and 7:00 in the waterfall. I’ve seen this before. Has the same Doppler profile as FO-29. It’s pretty weak as I don’t hear it on the speakers. Any ideas? Ron W5RKN