The Naval Surface Warfare Center (NSWC) Crane requires the repair of four Keysight N5173B Signal Generators to OEM specifications, with each unit failing self-tests and exhibiting timebase and power level issues. The government intends to sole-source this requirement to Keysight Technologies Inc. in Colorado Springs, CO, due to form, fit, and function needs, though responsible sources may submit capability statements for consideration. Performance of services will be at the contractor's facility, with no specific location for the work stated beyond the OEM's address. No budget amount is specified in the description. All offers must be submitted via email by the specified deadline, and contractors must be registered in the System for Award Management (SAM).