References

ITU-R M.2092–1 Technical characteristics for a VHF data exchange system in the VHF maritime mobile band – available at: https://www.itu.int/rec/R-REC-M.2092
ITU-R M.2435-0 – Technical studies on the satellite component of the VHF data exchange system – available at: https://www.itu.int/pub/R-REP-M.2435