Regarding Observation 9920986 …
The signal starts of on one side of the waterfall and then slides of the left side.
Is this a fault of my rtl not calibrated , or is the software not correctly positioning the center ?
Looking again at the waterfall i see the centre is correct, but on a much weaker signal
Any ideas where the other signal has come from ?
is it from the same object?
#9920983 has the same additional signal
The traces that follow the doppler correction is either terrestrial or from inside the SDR, anything from the satellite should be centered.
https://wiki.satnogs.org/Operation#Vetting_artifacts
The second obs actually has a signal, a faint vertical straight line.