I recently purchased an Adalm-Pluto and started the first tests. As an initial test I used Adalm-Pluto for receiving the linear transponder of the Qatar-Oscar 100 geostationary satellite. I compared Adalm-Pluto signal reception with those of SDRPlay RSPDuo and a simple RTL-SDR usb dongle. I was disappointed to notice that Adalm-Pluto produces many spurious signals, whereas the other SDR hardware doesn't show any, even the $20,- SDR-RTL usb dongle.
- Is there an issue with my Adalm-Pluto or have I just witnessed typical Adalm-Pluto behavior?
- Is there a way to illuminate the spurious signals?
The following link will give access to three screenshots of SDR Console supporting the above statements: https://www.irista.com/gallery/judupjhis8xh.
The screenshots show the "waterfall" of the SDR Console for any of the three tested SDR hardware components. Then observe that the waterfall of Adalm-Pluto shows many thin vertical lines, all representing spurious signals.
Erwin van der Linden