yes it was,my memory is fine.
Robert Hudson was responsible for the launch of TMS, writing to his Outside Broadcasts boss Charles Max-Muller in 1956, proposing broadcasting full ball-by-ball coverage of Tests rather than only covering fixed periods, and suggesting using the Third Programme (as BBC Radio 3 was then known) frequency, since at that time the Third Programme only broadcast in the evening.[2]

TMS became a fixture on BBC Radio 3 on AM medium wave until Radio 3 lost its MW frequency in February 1992. The programme moved to Radio 3 FM that summer and the following summer the morning play was on Radio 5, switching to Radio 3 for the afternoon session. The start of Radio 5 Live meant that TMS moved to its present home on Radio 4 long.
johnston made the comment in 1976, so my memory is fine. meanwhile raggytash you are wrong .