The U.S. Government is conducting market research to identify sources capable of qualifying and producing S-Band Radio Frequency Calibration Backplane Assemblies. The security clearance level and foreign participation limits are not yet determined, but contractors should expect to work with military, civilian, and partner personnel. No budget information is specified, and no funds are available for response preparation. The location for performance of services is not mentioned. Responses are due by the date specified in the posting, and the government will use the information to determine its acquisition approach.