U.S. Dept. of Commerce, NOAA, WASC, Acquisition Management Division WC3, 7600 Sand Point Way NE, Bin C15700, Seattle, WA 98115-0070

58 -- REQUEST FOR QUOTATIONS ISSUED FOR ZEPHYRUS SATELLITE UPLINK EMWIN 9600 BAUD MODULATORS SOL WASC-0-378 DUE 112999 POC Randall Brown (206) 526-6226/FAX (206) 526-6025 Request for quotations issued for four (4) ea. Zephyrus Electronics. Ltd. or equal satellite uplink EMWIN 9600 baud modulators. Modulators are critical items to support the rebroadcast of the EMWIN signal to PEACESAT (GOES-7). Modulators are required to convert RS-232 data to information that can be passed through the satellite utilizing minimum bandwith. These modulators will consist of two separate modules, an asynchronous to synchronous converter which pre-processes RS-232 data to be applied to the modulator and a modulator to covnert the pre-processed data to V.35 encoded DFSK data for transmission through the satellite. These systems will allow software compression at rates beyond 56K as needed. A total of four satellite uplink EMWIN modulators are required, two units operating at IF of 160.775 MHz and two units operating at IF of 132.775 MHz. Asynchronous to synchronous converter must accept RS-232 data at 9600 baud and convert it to synchronous TTL data to be applied to the modulator; mount in a19" rack panel; include AC/DC power supply; and meet or exceed 1.0 x 10(-6) bit error ratio (BER). Modulator must accept synchronous data from the async/sync converter and convert it to V.35 encoded DFSK data modulated onto a 72-74 MHz carrier which is adjustable in .00125 Mhz steps; be assembled in a 19" rack cabinet; include AC/DC power supply; meet or exceed 1.0 x 10(-6) bit error ratio (BER); exhibit frequency stability at 72-74 MHz or better than 3ppm between 10 degrees C and 50 degrees C; and deviate +1/-3.6Khz from center frequency. Test and acceptance criteria: each unit shall be tested for a period of 72 hours (30 days x 24 hours per day) prior to delivery to ensure conformance to the above specifications; tests shall be conducted at a facility local to the NWS Headquarters to allow spot-checking for test accuracy by NWS personnel; and coordination for earth station testing after NWS employees install units at various uplink facilities. Provide price, published pricelist, availability, Federal Tax ID number, and Dunn & Bradstreet DUNS number with quote. Delivery to Honolulu, HI. State if under GSA contract or open market. This is a simplified acquisition with an estimated value of less than $100,000. Posted 11/12/99 (W-SN400400). (0316)

Loren Data Corp. http://www.ld.com (SYN# 0170 19991116\58-0008.SOL)