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			A crosspost from another related thread, but here is what was listed in the 1977 change to the ELD: 
 Mk5-Mk5/2
 
 (1) Gun tank: One C42 and one AN/PRC-510 or one ANVRC-46 and one AN/VRC-53
 
 (2) Command tank: two C42 and one AN/PRC-510 or two AN/VRC-46
 
 MKll
 
 (1) Gun tank: one AN/VRC-46 and one AN/VRC-53
 (2) Command tank: two AN/VRC-46
 
 ARV One C42 or one AN/VRC-46
 
 AVLB One C42 or one AN/VRC-46 and AN/VRC-53
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