Hi, I have an RTL-SDR V3 Pro that I have tested a bit. When I listen to e.g. 20 meter HF band I get no reception at all. If I tune in my TS-590 on the same frequency, I have S9 + 20dB. Same Windom antenna and feed line. On the RTL-SDR V3 Pro dongle I hear nothing. No deflection at SCOPE either. In general, it seems to have little sensitivity. I use SDR# (Airspy). Probably something I have not adjusted correctly, because it can not be so bad?