GOVERNMENT CONTRACT AWARDS

* PDG Inc. in Calabasas won a $2.5-million contract from the U.S. Postal Service in South San Francisco, for architect and engineering services.

* Instrumentation Technology Systems in Northridge won a $785,000 contract from Fleet and Industrial Supply Center in Seal Beach, for communication, detection and coherent radiation equipment.

* Boeing North American Inc. in Canoga Park won a $341,403 contract from NASA in Cleveland for research and development.

* Whittaker Corp. in North Hollywood won contracts worth $339,900 and $137,470 from Defense Supply Center in Columbus, Ohio, for valves.

* Associated Industries in North Hollywood won a $295,000 contract from the Department of Justice in Washington for electrical and electronic equipment components.

* Crane Hydro in Burbank won a $159,275 contract from Defense General Supply Center in Richmond, Va., for electric wire and power and distribution equipment.

* ITT Aerospace Controls in Valencia won a $126,552 contract from Defense Supply Center in Columbus, Ohio, for electrical and electronic equipment components.

* Litton Systems Inc. in Woodland Hills won a $123,839 contract from Defense Supply Center in Columbus, Ohio, for electrical and electronic equipment components.