Respected Sir/Madam, Sorry to bother you considering how precious the time is for you professionals but i want some guidance from you. Sir/Madam i want to learn about GMR standard for Inmarsat, its frame structure, channel coding (FEC), ETSI Standard (GMR 1 or GMR 2) etc. Actually i want to learn about how to decode Inmarsat data. Hope to hear good from you soon. Regards, Ammar Ikram Pakistan