That mirrored spurious spectrum is seen in other bands too (but
attenuated). If you click on a particular signal so that it is at the
center, the spurious signal seen on the spectrum suddenly vanishes. This
is easily observed when running Quisk on a PC with radioberry running on
the network. If you click a seemingly legitimate signal on the right
side and center it (or simply move it in the screen - VFO remains the
same, only the display changes) with the Quisk arrow buttons, the signal
suddenly is not heard. Not sure if I explained it well enough to be
visualized.
I also see a lot of spurious signals on the screen. There is of course
RFI in my neighbourhood, there is a source that repeats every 20khz. I
see this everywhere in the spectrum now. Haven't yet checked whether it
is something that came up today or whether this is seen in this
particular release of code.
73
--
Ram VU3RDD