DF Redacted.pdf

This is a Determination & Findings (D&F) document for a sole source acquisition by the 50 Contracting Squadron, USAF.

The acquisition concerns five LINEAR POWER RF AMPLIFIER units, Model 5135E, with specifications including 800-2000 MHz frequency range, 300W front panel output, digital display with forward and reverse power readings, gain adjustment, ALC on/off, fault indication, standby mode, and rear panel IEEE-488 GPIB, RS-232, and Ethernet communication interfaces. The acquisition includes a five-year warranty covering parts and labor. The contracting officer justified the sole source procurement under RFO 11.204(a)(2)(ii) (Brand Name authority), determining that the particular brand and model are essential to Government requirements because no other amplifier system meets the 527th SAS operational requirements without adding prohibitive costs or requiring multiple alternative models. The OPHIR RF 5135E provides essential capabilities for concurrent signal monitoring, rapid reconfiguration without computer interface, compact size, and light weight suitable for highly mobile missions. The determination emphasizes the requirement for standardized operating equipment to reduce training time, troubleshooting efforts, system installation procedures, and operational risk management for critical National Security tasks during the 527th SAS's 200-day annual garrison operations. The Contracting Officer (Alejandro Castellanos, TSgt, USAF) approved the sole source action on August 21, 2026, under delegated approval authority per DAF Approval Authorities Matrix PM 26-C-11.