1.3.5 1301359853 BN (REDACTED).pdf

This is a Commercial Only One Source/Brand Name Justification document submitted by NAVSUP Fleet Logistics Centers (FLC) in accordance with FAR 12.102(a).

The procurement seeks twenty-five (25) Fluke Networks TS25D portable telephone test sets for testing and troubleshooting analog voice lines. The purchase request number is 1301359853 with a required delivery date of August 31, 2026. The manufacturer is Fluke Corp (CAGE Code 89536, classified as large business per NAICS). The specific technical requirements include an oversized LCD display (2 rows x 16 characters with 20 icons), data lockout protection for DSL/POTS lines, built-in tone generation, 10-speed dial memory, and 9V battery power in a 284-unit enclosure. Additional specifications include DSL/POTS filtering technology, amplified speaker for hands-free monitoring, memory capacity for up to 23 dialed digits, DC resistance greater than 1 MΩ on-hook and 150Ω off-hook, AC impedance exceeding 120 kΩ on-hook and 600Ω off-hook, tone frequency error not exceeding 1.5%, rotary pulse of 10 pps ±1 pps, dimensions of 7.8 x 2.7 x 1.6 inches, weight of 10 ounces, and 9V alkaline or lithium battery power.

The justification establishes that only Fluke Networks TS25D test sets meet the government's needs because they must be compatible in form, fit, and function with existing equipment currently in use. The document certifies that the TS25D is mission-essential telecommunications support equipment required for installing, testing, and troubleshooting analog phone lines and POTS without disrupting operational network traffic, and that it uniquely provides automatic data lockout, DSL/POTS filtering, and DTMF digit-grabbing capabilities essential for safe voice diagnostic testing.