Hello again. Please correct me if I’m wrong, I’ve a couple of questions/discussion to ask you:
the middle centered (and quite evdent) line in the waterfall should be the transmission right? I guess as well that my TLM data are wrong or not complete.
I’m curios about the left and the right sides. they seem extremely straight. considering the doppler compensation that are specific with the satellite: does it mean that the same satellite was transmitting on other frequency as well?
Yes the signals in the middle is the CW beacon on 145.910 MHz.
If you have a look here, you will see that this satellite is also transmitting on 145.892 Mhz Regarding the signals on the right i don’t think there are from that sat.
Just to add a more generic comment about the signal in the waterfalls, there are three parameters that affect how curved they look when they are not coming from the tracked objects.
Observation Duration: a short observation duration limits the doppler drift, so it may exist but it is not easily observable in that short duration
Observation Elevation: a low elevation pass affects much less the doppler drift, thus the lower the elevation the less curved will be noticed
The bandwidth range: In case of big range depicted in the waterfall image, in comparison to the doppler drift, you may not be able to notice the curve of the signal easily.
Regarding the signals on the right i don’t think there are from that sat.