BS IEC 62106-1:2018

What is this BS IEC 62106‑1 - VHF/FM baseband coding about?   

Radio Data System (RDS) is a communications protocol standard for embedding small amounts of digital information in conventional FM radio broadcasts. RDS standardizes several types of information transmitted, including time, station identification, and program information.    
BS IEC 62106‑1 is the first part of the BS IEC 62106 multi-series on RDS.  BS IEC 62106‑1 defines the basic layer of the RDS intended for application to VHF/FM sound broadcasts in the range 64,0 MHz to 108,0 MHz, which can carry either stereophonic (pilot-tone system) or monophonic programmes (as stated in ITU-R recommendation BS.450-3 and ITU-R Recommendation BS-643-3 ...