This message will be variable in length, based on the amount of binary data. The length should vary between 1 and 5 slots. Since the data content of this binary message is defined by the application, Message 8 is an Application Specific Message (click on this link for a registry of recognized Application Specific Messages)
The table below gives the number of binary data bytes (including application ID and application data), so that the whole message fits into a given number of slots. It is recommended that any application minimizes the use of slots by limiting the number of binary data bytes to the numbers given, if possible:
(Source: Rec. ITU-R M.1371-5) |