Hi Peter,
The only ‘long-term’ Pure PAW Base station I am aware of was EricC’s at Poulton-le-Fylde, which has been running constantly since he set it up to test a friend’s in-aircraft PAW install back in 2016.
Eric recently installed a full OGN-R station at the same location (with a little remote help from myself) and on my advice has now shut down his PAW Base Station Tx as it was automatically triggering his OGN rebroadcast, meaning that the OGN-R was effectively on constant transmit.
Good idea to upgrade other PAW bases to OGN-R though.
Best Regards
Peter (Robertson)