Most all the R-390A contracts were numbers like 42428-PC-59, clearly an army Signal Corps contract. But there are some like DAAB05-68-C-0040 - is that also Army?

and what about FR-36-039-N-6-00189(E)???

AFAIK, the only Navy contract was for the 5 Fowler units under N00024-84-C-202 plus an EAC spares contract N00126-70-C-0359

Otherwise all the Navy ones were procured by the Signal Corps?