DOC; Mountain Administrative Support Center; Acquisition Management Division; 325 Broadway, MC3; Boulder, CO

58 -- 96 RADAR RECEIVER SOL NRMAL-218DT DUE 010500 POC Doris Turner, Purchasing Agent, 303-497-3872 or FAX: 303-497-3163 E-MAIL: NOAA; MASC Acquisition Management, Doris.P.Turner@noaa.gov. The Environmental Technology Laboratory (ETL) of the National Oceanic and Atmospheric Administration (NOAA) proposes to negotiate on a sole = source basis contract under the authority of 41 U.S.C. 253(c)(1) with Radian International for the following radar wind profiler items to be used on a 449 MHz system, and to be compatible with the existing ETL radar wind profiling equipment. Item 1) One each Radar Receiver Unit: The Receiver Unit must be 100% compatible with NOAA-built data acquisition system (hardware and software), the Interface Unit (Item 2) and the Radar Transmit/Receive Unit (Item 3). The Receiver Unit must utilize a 60 MHz IF and must be a matched receiver for four software-selectable pulse lengths of 0.666, 1.33, 2.66 and 5.66 microseconds. The Receiver Unit must also support software-selectable pulse coding utilizing bi-phase modulation of complimentary pairs. Item 2) One each Radar Interface Unit: The Interface Unit must be 100 per cent compatible = with NOAA-built data acquisition system (hardware and software), the = Receiver Unit (Item 1) and the Transmit/Receive Unit (Item 3). The Interface = Unit must utilize a 12-bit analog-to-digital converter and support software-selectable antenna selection bits. The Interface Unit must = have test and receiver signal outputs for the pulses TR, TX, SYNCH, PHSE, = and for I and Q. Item 3) One each Radar Transmit/Receive Unit: The Transmit/Receive Unit must be 100 per cent compatible with NOAA-built data acquisition system (hardware and software), the Receiver Unit (Item 1) and the Interface Unit (Item 2). The Transmit/Receive Unit = must up-convert and down-convert the 60 MHz IF signal to 449 MHz, while providing for transmission with receive protection up to a 3 kW peak-power transmission (less than15 per cent duty-cycle), and = reception with transmitter isolation. Item 4) 24 each 18-element = coaxial-colinear Antenna Sticks: The Antenna Sticks must be composed of 18 half-wavelength elements arranged as a center-fed coaxial-colinear antenna completely enclosed in a weatherproof and airtight radome (coated with an additional radome protecting if required). The Antenna Sticks must be designed to operate approximately a quarter-wavelength above a ground plane in sets of 12 parallel units spaced approximately 0.6 wavelengths apart at 449 MHz. They must be tuned in such a way as to maximize power transfer from 50 ohm feed cables, while accounting = for mutual coupling effects at pointing angles of 0 and near plus or minus 15 degrees from zenith. The Antenna Sticks will utilize 7/16 DIN male elongated-housing connectors.. This procurement is being conducted per FAR Part 13, Simplified Acquisition Procedures. This synopsis is = issued for information only. No competitive solicitation is planned. No = award will be made on the basis of requests in response to this notice. Information submitted in response to this notice will be used solely to determine whether or not use of competitive procedures to fulfill this requirement would be in the Government=92s best interest and must = address qualifications pertinent to this requirement. Terms and Conditions and agency level protest procedures can be found on web site http://oamweb.osec.doc.gov/conops/#REFERENCE. Hard copy in full text available from office address and phone number listed in notice. Anticipated award date will be January 10, 2000. Posted 12/21/99 (D-SN410676). (0355)

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