Many thanks to SRAA contributor, Tom Laskowski, who shares the following recordings he has transferred from audio cassette. Tom includes the following notes:
I combined several audio files of some of the common time signal stations available back in 1981 and 1982 into one clip. These were made using a DX-302 which had poor image rejection and you can hear some stations behind WWV which shouldn't be there, such as RCI's interval signal at one point.
00:00 - VNG, Australia - August 16, 1981 on 12.000 MHz at ???? UTC
03:02 - LOL, Argentina - October 15, 1981 on 15.000 MHz at 2349 UTC
07:27 - BPM, China - January 16, 1982 on 10.000 MHz at 1255 UTC
08:38 - ZUO, South Africa - December 18, 1982 on 5.000 MHz at 0329 UTC