Many thanks to SRAA contributor, Jack Widner, who notes:
La Voix du Zaire, 15.245khz shortwave, monitored July 1975 in Indiana USA. This segment is mostly music ending with announcing the start of a program "hygiene et sante". Approximate time would have been between 1900-2000 UTC.
Receiver/Antenna used: Hammarlund HQ180, 100 foot V-shaped longwire