Many thanks to SRAA contributor Dan Greenall, who shares the following recording and notes:
Broadcaster: La Voix de la Revolution Congolaise, Brazzaville
Date of recording: Circa 1973
Frequency: 4.765 MHz
Reception location: Ancaster, Ontario, Canada
Receiver and antenna: Hallicrafters S-52 using a longwire antenna
Notes: One of the more consistent Africans heard in the 60 metre band shortwave during the early 1970's from here in southern Ontario, Canada was La Voix de la Revolution Congolaise from Brazzaville, Republic of Congo on 4765 kHz. Best reception usually occurred at 0430 UTC sign on, or up to an hour before sign off at 2300 hours UTC. This recording is circa 1973, and you will hear part of the anthem followed by identification in French.