This is a notice of a proposed sole-source contract action, not a request for quotations. The Air Force Research Laboratory (AFRL) requires three specific standalone Spectrum Instrumentation Digitizers with detailed technical specifications, including 16-bit depth and a high sampling rate. The government intends to award the contract solely to Spectrum Instrumentation Corporation in Hackensack, NJ, believing no other company can meet the requirements. While not a competitive solicitation, responsible sources may submit a capability statement for consideration to potentially influence future procurements. The government anticipates making the award on or before April 30, 2026.