As I promised I created a "VE3WMB NUE-PSK" folder in the Photos section
of this group and uploaded 4 shots of the NUE-PSK Digital Modem in
action. I had it connected to my FT-817 tuned into 20m at the time
(it was late and the band was in and out).
Note that the keyboard shown in the photo is tiny. I included a normal
sized pen for scale. The NUE-PSK itself is the length of my hand.
As I briefly mentioned in one of the photo descriptions, tuning can be
accomplished by turning the "Tune" encoder or my preferred method
left/right arrow keys on the keyboard (intuitive) or UP arrow (faster
tuning to the right) and Down Arrow (faster tuning to the left). The
top part of the display is not a true waterfall but indicates the
presence of signals and is pretty effective as a tuning aid.