Federal Contracts Report is a weekly summary of selected contracts recently awarded by the federal government to companies and other vendors in the Baltimore area.

* Johnson & Towers Baltimore Inc. of Baltimore won a $71,550 contract from the Navy to supply a diesel engine.

* Westinghouse Electric Corp. of Hunt Valley won a $26,476 contract from the Air Force to supply a mixer.

Midwest Communications Corp. of Lanham won a $193,119 contract from the Navy to supply visual television studio equipment.

Technical Software Services Inc. of Landover won a $133,614 contract from NASA to supply computer boards.

Falcon Microsystems Inc. of Landover won a $42,571 contract from the Navy to provide computer adaptations.