D and F Redacted.pdf

This is a Determination & Findings (D&F) document for a single-source procurement by the Department of the Air Force, Air Force Technical Center, PZ-IOAB, Base Operations Support.

The procurement involves purchasing nine brand-name GPS antenna components from Southeast Aerospace, Inc. The antennas must meet specific technical requirements including dual-frequency capability (L1: 1565-1585 MHz and L2: 1217-1237 MHz), right-hand circular polarization (RHCP), 50-ohm impedance, 26.5 dB gain, 2.8 dB noise figure, 1-watt power handling, and DC-grounded lightning protection. Physical specifications include 6061-T6 aluminum/thermoset plastic construction with skydrol-resistant enamel finish, TNC connector, white color, 7-ounce weight, 3.50-inch diameter, 0.70-inch height, and operational capability at -80°F to +203°F with 10G vibration tolerance and 70,000-foot altitude rating. Delivery is required within two weeks after receipt of order (ARO).

The single-source justification is based on RFO 12.102(a) (Commercial Products and Services), citing that only Southeast Aerospace antennas meet the mandatory Size, Weight, and Power (SWaP) parameters, extreme environmental survivability ratings, and strict two-week delivery timeline. Market research confirmed competing commercial GPS antennas exist but require costly Engineering Change Proposals for integration and would cause program delays. Southeast Aerospace hardware is already integrated into the platform's baseline system with proven mission performance. GSA and NASA Sewp reseller searches found no alternative sources available. The Contracting Officer is the approval authority for this determination.