Looking to listen to various radio services in Holyhead?
Perhaps marine radio?
SDR runs off a PI 4 (2GB) DMR Decoder (Pi-Star set to Talkgroups: 31666 - DMR of Anarchy) Audio Recorder
Note: SDR runs off 2x 100w Solar Panels and a 25AH Renogy Battery which currently doesn't seem to be holding a decent charge so often goes offline when there has been poor sun for while!
Sadly the 'Toy' fund is empty due to the ridiculous cost of electric in the UK so it's unlikely to be resolved until at least spring 2024 when the sun returns!