I use DM780 for psk digital and on the waterfall on 10 meters (28.120) I see thin vertical lines that never vary in frequency or strength. Are they a carrier for some mode unknown to me or is it local QRM? Not really a problem but just don't know what it is.
Are the lines there constantly? Meaning if there is no propagation do you still see those lines in the waterfall?
If so then it is local QRN. I tuned to 28.120 at 11:10 UTC and I see two thin lines on the waterfall here.
One is located just below the 500 marker and the other is almost at 2200. I suspect that is local QRN of some sort but it would not likely be strong enough to interfere with a signal. Thin lines, they are not as wide as the marker.