Numerous concise recommendations appear in the notebook volume bearing the number 401.0-B. Each recommendation is dated, and the most recent revision is shown in the table of contents. These Recommendations are developed for conventional near-Earth and deep-space missions having moderate communications requirements. The current update extends the rate for suppressed carrier telecommand systems to 2.048 Mb/s. The current version of this document contains all updates through technical corrigendum 1, dated May 2012.