The purpose of MIL MIL-STD-188-141A w/CHANGE 2, in the form of mandatory (DOS), that are considered necessary haul and tactical radio equipment in the high frequency (tiF)band. It is establish a level of performance for document is to establish technical standards and optional design objectives to ensure interoperability of new longthe medium frequency (HF) band and in also the purpose of this document to new radio equipment as is considered necessary to satisfy the requirements of the majority of users. These technical parameters, therefore, represent a minimum set of interoperability and performance standards. The technical parameters of this document may be exceeded in order to satisfy certain specific requirements, provided that interoperability is maintained. That is, the capability to incorporate features such as additional standard and nonstandard interfaces is not precluded.