Ionogram Information from the UK Solar System Data Centre at Chilton (RAL). Critical frequency is currently 3.1MHz (ie. foF2) and Maximum Usable Frequency MUF(D) is 8.13MHz. https://www.ukssdc.ac.uk/ionosondes/view_latest.html. Registration is required to access the data after which login just requires an email address (leave the password blank.
The RAL is the Rutherford Appleton Laboratory: https://stfc.ukri.org/about-us/where-we-work/rutherford-appleton-laboratory/
Day: February 22, 2022
3D printed case of the (tr)uSDX just arrived
Can’t decide whether to go for original (tr)USDX orange or green. For scale here is an image next to one of my QCX Minis: