Commercial Acquisition Department, Bldg. 11, Naval Undersea Warfare Center Division, Newport, Code 59, Simonpietri Dr., Newport, RI 02841-1708

58 -- SOURCES SOUGHT FOR DUAL CHANNEL, 1 KVA PER CHANNEL POWER AMPLIFIER POC Contact Carol Gorman, Contracting Officer at (401) 841-2442 X203. . Fax number (401) 841-4820. WEB: Naval Undersea Warfare Center Division, Newport, http://www.npt.nuwc.navy.mil/contracts/. E-MAIL: Carol R. Gorman, Contracting Officer, GORMAN@CODE59.NPT.NUWC.NAVY.MIL. This is not an advertisement of a solicitation at this time. Information only from potential sources as requested below is being sought by the Naval Undersea Warfare Center, Division Newport. We are looking for sources for a Dual Channel, 1KVA per Channel, low distortion Power Amplifier for use on the Acoustic Augmentation Support Program (see specification below). Please review this information and provide factual supporting documentation, including technical data sufficient to permit meaningful evaluation by the requirer, and a description of your relevant corporate experience (include applicable contract numbers and names of contract administrators with their telephone number). Provide this information to Carol Gorman, Commercial Acquisition Department, Building 11, Naval Undersea Warfare Center Division Newport, Code 5913, Simonpietri Drive, Newport, RI 02841-1708; or facsimile number 401-841-4820. Responses before 17 January 1997 will be appreciated. Specification: The followingdescribes t he electrical, physical, and environmental requirements of a high power, very low distortion, Class B/AB, two channel, solid state power amplifier. The amplifier will be used to drive high power ceramic sonar transducers, with their associated tuning and impedance matching transformers. Rated power into resistive and reactive loads, low distortion, high reliability, and minimum weight are key amplifier characteristics. Amplifier Requirements -- Number of Channels: Two (2). Operating Class: Class B/AB; ('s witch mode' amplifiers are NOT acceptable). Output Power Per Channel: 1 KVA min, single tone (sinusoidal), continuous duty, 20 Hz to 20 kHz. Load Configuration: (GFE) Transformer plus resistive and reactive sonar transducers. Load Impedance: (1) AC impedance magnitude, 8.0 Ohms min, 20 Hz to 20 kHz; (2) AC Impedance Phase Angle, (-)88 deg. to (+)88 deg.; (3) DC resistance, 0.1 Ohms min, (GFE transformer primary winding). Damping Factor: 100 min, 20 Hz to 20 kHz. Voltage Gain & Tolerance: 26 dB +/- 0 .5 dB, 8 Ohm load or higher; 20 Hz to 20 kHz. Input Impedance: 10 K Ohms min, differential, 20 Hz to 20 kHz. Common Mode Rejection: 40 dB min, 20 Hz to 20 kHz. Input Connectors: One (1) isolated BNC connector per channel. Total Harmonic Distortion: 0.1%THD max, lVA to lKVA output per channel, 20Hz to 20kHz. Self Protection: Amplifier shutdown for output over-current or over-temperature. Prime Power: 440V, +/- 10%, 3 Phase, 60 Hz, delta connected. Monitor Features: Scaled replicas of output voltage an d current for each channel. Weight: Minimum practical. Mounting Configuration: 19 inch rack mountable. Depth behind front panel: 20.5 inches max, including connectors, handles, etc. Depth in front of front panel: 2.5 inches max, including handles, grills, etc. Height: Minimum practical. Cooling: Internal forced air. Operational Ambient Temp.: 50 to 95 degrees F. The GFE transformer will be rack mounted with the power amplifier, but not in the same enclosure (current equipment configuration prohibits this). In light of this, size and weight characteristics of the GFE transformer should not be a consideration. (0354)

Loren Data Corp. http://www.ld.com (SYN# 0285 19961223\58-0011.SOL)