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

TABLE XIV. Control bit assignments.

5.5.3.2 Channel quality measure request.

Channel quality measure requests shall use the channel quality measure request CMD word as shown on figure 10. The Control and Epoch fields shall be encoded as described above. Each channel quality measure selector bit (see table XV) shall be set to 1 to request that the corresponding channel quality measure be reported, or to 0 to suppress reporting of that channel quality measure.

3 7 2 5 2 5
CMD	1100000 (''':ALQA)	10	Control	Epoch	CQM 1-5

FIGURE 10. ALQA channel quality measure request CMD format.