Airspy HF+ and RSPdx compared
I now have a second YouLoop (supplied by Moonraker) set up in the loft, this time connected to the RSPdx which itself is connected to the Linux PC. I use SDR++ on the Mac and am getting used to the excellent software (see https://www.sdrpp.org). There are versions specifically for Ubuntu, Windows, MacOS (Intel and Apple silicon) and the Raspberry Pi, plus the source code is available to compile yourself. So I wanted to compare the Airspy HF+ Discovery and the RSPdx.
When installed on the Linux PC SDR++ does not see the RSPdx. However, once the relevant API is installed and running it duly appears in the devices list as SDRplay and displays the necesary antenna selection menu.
So here they both are, looking from 0 to around 85kHz. First the Mac and Airspy:
And the Linux PC and RSPdx:
This is about as clean as I managed to get the various settings and it is particularly useful having the same software on each machine.
Of course this is a rather arbitrary comparison given the multitude of settings and the fact that they are on two different platforms, plus the two YouLoops are facing in different directions. But it does at least show that, while the Airspy is as good as everyone says the RSPdx is still a useful SDR, plus it has the three software selectable inputs. For me this is handy as I intend to connect the PA0RDT antenna and a Cross Country Wireless loop which I have yet to set up.