This is a weekly summary of selected prime contracts recently awarded by the federal government to companies and other vendors in Maryland.
* National defense contracts
Allied-Signal Inc. in Baltimore won a $6,042,750 contract from the Navy to fabricate, assemble and test antenna assemblies.
Peter J. Scarpulla Inc. in Baltimore won a $4,660,000 contract from the Army to provide two child development centers at Fort Meade.
Spotless Janitorial Services Inc. in Lanham won a $1,636,574 contract from the Army to provide hospital housekeeping and custodial services and supplies at Fort Meade.
Great Lakes Dredge & Dock Co. in Timonium won a $1,389,000 contract from the Army to provide a maintenance dredging station.
Synodinos & Associates in Baltimore won a $1,026,000 contract from the Army to upgrade security at Aberdeen Proving Ground.
American Combustion Industries Inc. in Brentwood won a $637,005 contract from the Army to replace the boiler in building 349, Letterkenny Army Depot, Chambersburg, Pa.
Conveyor Handling Co. in Jessup won a $298,850 contract from the Defense Construction Supply Center to provide T-ration systems.
Kennedy Electric Co. in Rockville won a $263,000 contract from the Army to upgrade the electrical system in buildings 235 and 293, Vint Hill Farms Station, Warrenton, Va.
Scandia Mfg. Co. in Baltimore won a $169,000 contract from the Navy to supply periscope fairings.
Litton Systems Inc. in College Park won a $95,552 contract from the Navy to provide quantizer groups.
Nancy Low & Associates Inc. in Chevy Chase won a $7,202,577 contract from the Health Resources and Services Administration provide health manpower recruitment support.
SMC-United Industrial Limited Partnership in Bethesda won a $1,563,250 contract from the General Services Administration for lease.
Aspen Systems Corp. in Rockville won a $1,051,089 contract from the Justice Department for litigation support services.
The Orkand Corp. in Silver Spring won a $793,550 contract from the Justice Department to provide for support services.
Motorola Inc. in Landover won a $256,000 contract from the U.S. Marshals Service to provide communications equipment.
Browing Ferris Inc. in Capitol Heights won a $151,200 contract from the U.S. Postal Service to provide trash removal.
Macro International Inc. in Silver Spring won a $196,243 contract from the Health Resources and Services Administration for a pediatrics study.
N. W. M. Mechanical Contractors in Brentwood won a $115,140 contract from the Department of Defense to provide heating, ventilation and air-conditioning maintenance and repair services.