Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Broadcaster: Radio Botswana 1983

Frequency: 4.845 MHz

RX location: Brantford, Ontario, Canada

Receiver and antenna: Panasonic RF-3100 and longwire antenna

Notes: Radio Botswana used to be famous for their "barnyard" interval signal. While my recording, from 1983, only captures a few seconds of the cowbells, it does include their full national anthem and sign on announcements in Setswana (presumed) and English.