Department of the Air Force, Air Force Materiel Command, WR-ALC, WR-ALC/PK Acquisition Opportunities, 235 Byron Street, Robins AFB, GA, 31098-1611

59 -- APX-103B ANTENNA DRIVE UPGRADE SOL Reference-Number-APX-103B POC Andrea Prichard, Contract Specialist, Phone (912) 926-7059, Fax (912) 926-7545, Email Andrea.Prichard@robins.af.mil WEB: Visit this URL for the latest information about this, http://www.eps.gov/cgi-bin/WebObjects/EPS?ACode=P&ProjID=Reference-Num ber-APX-103B&LocID=1202. E-MAIL: Andrea Prichard, Andrea.Prichard@robins.af.mil. APX-103B ANTENNA DRIVE UPGRADE, REQUEST FOR INFORMATION (RFI) Category: 59 -- Electrical and Electronic Equipment Components -- Potential Sources Sought Date Published: 21 June 2000 Contact: Warner Robins Air Logistics Center, Avionics Management Directorate,(WR-ALC/LYGN) 380 2nd Street, Suite 104, Robins Air Force Base, GA, 31098-1638, Point of Contact: Tong Tang, Avionics Engineer, (912) 926-9859. Synopsis: The Antenna Drive, TG-222/A is an electromechanical device used to steer the interrogator system antenna radiation pattern in the vertical direction to track the horizon for aircraft altitude excursions as great as +-18 degrees. This is accomplished by mechanically varying the length of the rf circuits to the upper and lower row of antenna elements. Length variation is achieved by controlled movement of trombone shaped slide rods within the tube projection of the connector assemblies. Movement of the fours slide rods is accomplished by four-rack gear driven through a common pinion gear by a 10-volt ac stepping motor. Motor and slide rod position information is provided by an encoder and a photo proximity sensor respectively. A purge fitting is located on top of the housing. The Antenna Drive housing is rectangular with a cylindrical protrusion from the top. The lower portion of the housing contains the rack and pinion gear assembly, four adjustable length lines, and the photo proximity detector circuit. The cylindrical protrusion contains the motor and encoder circuit and disc. The unit is filled with dry nitrogen to prevent arcing in the adjustable length lines at altitude and to prevent moisture from entering the unit. RF Connectors are type N female. The Antenna Drive is mounted on the antenna pedestal rear spar with four fasteners and is accessible from the center section of the antenna pedestal. The RF Tubes are Copper-byllium. The Antenna Drive is a high power, S-Band frequency rf steering device. Please identify whether you have a potential, already-existing, upgraded/replacement antenna drive. Upgraded/replacement antenna drives will require no wiring or cabling addition or modification and no additional cooling or power. In addition to a description of the approach, include any systems on which the upgrade was installed, your schedule and production capability, the earliest possible date the upgraded unit would be available for flight-testing and the type of pricing history that is available. This is not a pre-solicitation notice that constitutes an Invitation for Bid or a Request for Proposal, and is not to be construed as a commitment by the Government. The Government will not reimburse contractors for any costs incurred in responding to this notice, or in subsequent exchanges of information. Organizations having the required expertise and capabilities are invited to submit information discussing such capabilities in a technical capability outline. Comments do not constitute a proposal, but will be considered as an open exchange of capabilities and ideas. Respondents will not be notified of the results of the source data received, nor will a source list be provided. The response date for this request is 1 July 2000. Responses may be submitted to Tong Tang, Avionics Engineer, (912) 926-9859 or email Tong.Tang@robins.af.mil. Posted 06/21/00 (D-SN467090). (0173)

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