Papua New Guinea has been reactivated using 3905 Khz and 4890 Khz. Best chance to hear them is at around 1900 Utc till 2030 Utc.
On german A-DX there is a discussion on blocking Papua New Guinea by pirate radio stations. One proposal was to inform the authorities about these pirate radio stations.
So please keep away from 3905 Khz and 4890 Khz at european evenings.