MIL-STD-187-721 Interoperability And Performance Standard For Advanced Adaptive Hf RadioThe purpose of this document is to describe the technical parameters for adaptive high frequency HF radio that are more advanced than those described in MIL-STD-188-141. The advanced technology contained in this standard will guide the planning of military adaptive HF radio network technology into the 21st century. To fully understand and utilize this document, it is necessary to refer to portions of MIL-STD-188-141.

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MIL-STD-187-721D

5.6.5 Power control. See MIL-STD-188-141.

5.6.6 Scheduling functions.

Table XVIII lists the groups of ALE scheduling functions that are defined in the following paragraphs:

TABLE XVIII. Groups of ALE scheduling functions.

* MIL-STD-188-141

a. Each of these functions employs a scheduling CMD word with the generic format shown on figure 20. The first character in every scheduling CMD is "t" (1110100). The second character in the CMD identifies the specific scheduling function to be performed. For all scheduling functions except the Date and Time group, the third character position contains a time code in accordance with table XIX. The time offset indicated in the time code shall be added to the time of receipt of the end of the transmission carrying the CMD word (end of Tx) to determine the time "T" at which the specified function is to be performed (see the relevant paragraph below).