HFGCS rebroadcast timeline

About 1 in 3 EAMs broadcast on the HFGCS are rebroadcast. Whether by the ground station through an E6B message relay, there appear to be rules governing how often or within what time limit these broadcasts may take place, and most messages are not rebroadcast after about 2 hours. Special attention should be paid to those rebroadcasts that take place outside the typical constraints. For the below log-scale chart, each horizontal track is one message that was rebroadcast, aligned to its own first airing (t = 0); dots to the right mark each rebroadcast at its elapsed time.

Last updated 260619.

Group 1 Group 2 Group 3 Group 4 Group 5 broadcast E-6B-flagged airing