Voice of America* via São Tomé and Príncipe was heard on the medium-wave frequency of 1530 kHz. An English language broadcast of VOA News, VOA Safari Africa and more in-depth news reports was monitored from 03.00 till 03.40 UTC (broadcast time 03.00 till 04.30), on 19 May 2016. Reception was initially (SINPO) 34443 -- fair to good signal when not affected by co-frequency QRM from Pulse 2 (UK). Nevertheless audio was clear, remained steady and audible, at least up until 03.20 UTC. At this point, quality of reception deteriorated to 23432. By 03.40 UTC, reception worsened to 23321 -- just barely audible and unintelligible content due to continued co-frequency interference and increased atmospheric noise.
Reception report was emailed to VOA on the same day. IBB Sao Tome Manager replied with email verification on 23 May 2016. What's more surprising is IBB Sao Tome no longer sends out their paper QSL card, and apparently eQSL.
*Transmission was received using SDR web-receiver in The Netherlands (Twente)