1530 PEF-Posto Emissor do Funchal, Poiso (Chão dos Balcões), is another example of weak audio, at least at times, and I got the confirmation from them a few years back, explaining the changes at the new tx site wasn’t simply in terms of reduced power to 3 kW (nom. 10 kW) but also a bit of modulation level reduction so as to save components.  The Poiso site replaced the old site at Encruzilhadas, St.º António which became surrounded by houses.
Carlos Gonçalves (2021-04-17)