The Government is conducting market research to identify potential sources that possess the expertise, capabilities, and experience to successfully meet the qualification requirements to repair for the NSNs: 557 PN: E8404A Chassis Plug In Unit, 757 PN: N1912A–OPTH01 Wattmeter, 287 PN: E1412A Electronic Module Standardize, 440 PN: E4440A–24–215–HB2–H Spectrum Analyzer, 903 PN: E8257D–520–007–1E1–UNT–UNW–HSM Signal Generator, 997 PN: Z2090–66513 Circuit Car Assembly, 397 PN: Z2091–67912 Aircraft MA Fixture, 136 Z2091–67917 Interface Dev, Panel, 741 PN: Z2091B–104 Stimulus Distribution Assembly (SDA), 761KV PN: N1921A–106,C35 Power Sensor, 516 PN: Z2091B–105 Interface Device Panel, 174 PN: Z2091–67909 A/C Maintenance Fixture, 175 PN: Z2091–67907 Aircraft Maintenance Fixture to ensure full compatibility on the F–15 Tactical Electronic Warfare System (TEWS) Intermediate Support System (TISS). Please see the attached RFI for full description information. Also note that this is for market research purposes only, and NOT a request for quote.