The National Institute of Standards and Technology (NIST) is seeking information from vendors capable of providing Radio Frequency System on Chip (RFSoC) Integrated Microwave Readout Electronics for the operation of large arrays of x-ray detectors. These electronics must generate, convert, receive, and digitize hundreds of sinusoidal tones at frequencies ranging from 1 MHz to 1 GHz, utilizing the Xilinx Zynq UltraScale+ RFSoC technology, and must be compatible with PCI-express interfaces of a PC. This procurement is critical for advancing NIST's research in x-ray detection technology, and interested organizations are invited to submit their capability statements by 2 p.m. MST on January 8, 2025, to the primary contact, Angela Hitt, at angela.hitt@nist.gov.