NASA/Lyndon B. Johnson Space Center, Houston Texas, 77058-3696, Mail Code: BE

58 -- X-38 UHF TRANSCEIVERS SOL 9-BE13-18-9-17R DUE 031299 POC Yolande B. Harden, Contracting Officer, Phone (281) 483-9953, Fax (281) 244-5337, Email yolande.b.harden1@jsc.nasa.gov -- Yolande B. Harden, Contracting Officer, Phone (281) 483-9953, Fax (281) 244-5337, Email yolande.b.harden1@jsc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/JSC/date.html#9-BE13-18-9-17R. E-MAIL: Yolande B. Harden, yolande.b.harden1@jsc.nasa.gov. NASA/JSC is hereby soliciting information for potential sources for off-the-shelf space-qualified or space qualifiable Radio Frequency (rf) UHF transceivers for the X-38 project application. The JSC X-38 project intends to integrate an UHF data communication system into X-38 spacecraft. The X-38 201 vehicle is the unpiloted space test vehicle scheduled to be flown in the Space Shuttle's payload bay. After the Shuttle reaches orbit, the 201 vehicle will be deployed, and will de-orbit and land automatically. While on orbit, the X-38 UHF communication system provides the Shuttle astronauts a means to remotely monitor the vehicle status and command the vehicle in the close proximity of the Orbiter. During the landing phase, X-38 UHF communication system will also provide the parafoil ground operator a means to remotely control and monitor the parafoil system in line of sight coverage. X-38 UHF transceiver will be integrated inside the pressurized volume of this vehicle. Depending on the footprint size of the unit, the transceiver will be mounted either on a actively cooled or conduction cooled equipment pallet. The transceiver must be of high reliability and capable of operating in the environments encountered while on-obit, and landing conditions (ie. temperature, vibration, EMI/EMC). This equipment must also endure the non-operating Shuttle launch environments. Key features of the UHF transceiver include: simplex or half-duplex operational mode transmitting/receiving a single tunable frequency within 410-420 MHz band transmitting/receiving a minimum data rate of 9.6 kbps transmitting RF output power: 0.25 to 5 Watts selectable/variable (preferable) or 2 Watts fixed compatible with a RS-422 or RS-232 serial command/telemetry/monitor/control interfaces Prime power: 28 VDC volts (preferable) or 12 VDC or 5 VDC Maximum dimensions: D1: 10.4 in (w) x 9.6 in (l) x 3.5 in (h) or D2*: Better option: 3.25 in (w) x 4.75 in (d) x 3.5 in (h) or smaller or D3*: Better option: Integrated on a VME card *D2 & D3 are on aactive cold plate Environmental requirements include: Temperature The transceiver shall meet specified performance requirements during exposure to the qualification levels of D1: -4 0F (-200C) to 1310F (+550C) conduction cooled only D2 & D3: cold plate temperature range of 75 : F (+24:C) to 120 : F (+49:C) Vibration The duration of the vibration tests are 30 seconds in each axis. Non-operating launch vibration environments are: For D1: X-38 Random Vibration Environment All Axis Frequency (Hz) Magnitude (g2/Hz) 20 0.02 80 0.10 400 0.10 2000 0.010 Grms = 9.05 Non-operating Random Vibration Environment For D2 & D3: X-38 Random Vibration Environment Normal axis In-plane axis Frequency (Hz) Magnitude (g2/Hz) Frequency (Hz) Magnitude (g2/Hz) 20 0.010 20 0.005 40 0.160 40 0.080 350 0.160 350 0.080 2000 0.005 2000 0.0025 Grms = 8.30 Grms = 6.98 Non-operating Random Vibration Environment EMI/EMC The transceiver shall meet emission and susceptibility requirements as specified in Mil-STD 461 D. NASA/JSC is looking for off-the-shelf hardware that meets the requirements stated above or modified off-the-shelf hardware which can meet the requirements. No solicitation exists; therefore, do not request a copy of the solicitation. If a solicitation is released it will be synopsized in the CBD and on the NASA Acquisition Internet Service. It is the potential offerors responsibility to monitor these cites for the release of any solicitation or synopsis. Vendors having the capabilities necessary to meet or exceed the stated requirements are invited to submit appropriate documentation, literature, brochures, and references. Please advise if the requirement is considered to be a commercial or commercial-type product. A commercial item is defined in Internet "Note A". This synopsis is for information and planning purposes and is not to be construed as a commitment by the Government nor will the Government pay for information solicited. Respondents will not be notified of the results of the evaluation. Respondents deemed fully qualified will be considered in any resultant solicitation for the requirement. The Government reserves the right to consider a small business or 8(a) set-aside based on responses hereto. All responses shall be submitted to Yolande Harden no later than March 12, 1999. Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html. Posted 03/02/99 (D-SN303708). (0061)

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