The AN/PRC-158 is a when loaded with certain modules. Consequently, the full operator’s manual is classified as Restricted or Export Controlled (under ITAR). Publicly, you will find only the "Operator’s Quick Reference Card" or sanitized excerpts. Authorized personnel access the full PDF via the L3Harris Technical Support Portal (requires a CAC or approved sponsor) or the program's Technical Data Package (TDP) .
Since this is often the primary mode for standard infantry operations, the manual details: an prc158 manual