I would just like to bring to your attention that Tobias, DF8TH, has initiated an Open Petition against PLT:
which has been addressed to the European Committee for Electrotechnical Standardization (CENELEC)
Background as you already might know is an attempt to establish a new PLT standard for Europe in the nearest future which is almost certain to worsen qrm on shortwave. Please feel free to sign the petition. It’s composed in German, but there is a language selector in the red menu bar at the top of the page labelled “Sprache auswählen” which will trigger a google translation. The subscription period will run for another 39 days and as of yet 1570 people have signed.
many thanks and my apologies for the OT
73 Bernhard DL4CW