26-02193 Requirements and Specifications SUPPLEMENTAL DOCUMENTION.pdf

This document is a procurement specification for vacuum tubes required for WWV/WWVB operations. The solicitation requires three specific EIMAC vacuum tube models with defined quantities and warranty terms. The 4-400C EIMAC tube requires a quantity of one unit with a warranty of 12 months or 3,500 hours, whichever occurs first, on a prorated basis. Two units of the 4CX5000A EIMAC tube are required, each with a 12-month or 10,000-hour prorated warranty. Additionally, two units of the 4CX15000A EIMAC tube must be supplied with a 12-month or 5,000-hour prorated warranty.

All tubes must be manufactured by EIMAC, with no substitutions permitted. The warranty structure for each tube model is prorated, meaning coverage decreases proportionally as the tubes are used. Contractors must provide tubes that meet these exact specifications and warranty requirements to qualify as responsive to this requirement.