Radio Nacional de Angola's website (rna.ao) now streams all five of their domestic networks and - unpublicised and hidden away - their international service. It shares FM frequencies with domestic network Radio N'Gola Yetu so when that signs off at 20:00 UT the International Channel is streamed. It was observed yesterday with the schedule as per current WRTH, i.e. 20:00 Lingala; 21:00 French; 22:00 English; 23:00 Portuguese. The canned(?) announcement at the start of the broadcast stated "mediumwave 7215 and 7245 kHz, shortwave 945 kHz [sic], modulation frequency 101.4 and 101.6 MHz", however the ensuing live announcement only referenced 101.4 MHz (elsewhere on the website 101.4 and 104.6 are given as Radio N'Gola Yetu's main frequencies).
There's an edited recording of the International Channel signing on in various languages on the Angola page of Interval Signals Online - intervalsignals.net
David Kernick, Interval Signals Online (via dxld yg)