58 -- X-38 S-BAND AMPLIFIER

Notice Date

February 9, 2001

Contracting Office

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

ZIP Code

00000

Solicitation Number

9-BH13-20-0-47P

Response Due

February 20, 2001

Point of Contact

Darrell R. Matula, Contract Specialist, Phone (281) 483-8520, Fax (281) 244-5337, Email darrell.r.matula1@jsc.nasa.gov -- Krystine O. Bui, Contracting Officer, Phone (281) 483-4186, Fax (281) 244-5337, Email krystine.o.bui1@jsc.nasa.gov

E-Mail Address

Darrell R. Matula (darrell.r.matula1@jsc.nasa.gov)

Description

THIS NOTICE CONSTITUTES AMENDMENT NO. 3 TO THE SYNOPSIS/RFQ FOR "X-38 S-BAND AMPLIFIER." Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to address questions by potential offeror(s) that have been raised regarding the X-38 S-Band Amplifier Specification. Question 1: With regard to 3.9.4.5 Corona spec: the initial response was that there were no organics so corona can be tolerated. Can you give us any more details on this? Answer to Question 1: Corona is not a problem for the X-38 mission. The S-Band amplifier will be located in a pressurized compartment, therefore the partial pressure environment necessary for corona effects to occur are not present. The S-Band amplifier for the CRV may be operational during cabin pressurization, therefore corona requirements are applicable for the CRV contract options only. Question 2: We are discussing using GaAs and not LDMOS for this application, but run into problems with dimension spec of the module. If we can do without the isolator, in favor of hybrid combiners and ferites, this would work better. However, the need for a DC-DC converter (flight approved), presents us with an internal space problem. Answer to Question 2: The envelope requirements for the length (11.5") and width (5.5") of the amplifier can not be modified. We can modify the envelope height requirement defined in section 3.3.2, from 3" to 6". Question 3. Is there any power degradation spec. over temperature for the amplifier? Answer to Question 3: The power requirements of sections 3.1.3 (DC Current) and 3.2.3.1 (RF Output Power) are applicable for all temperatures between +140 and -20 degrees Fahrenheit. The due date for receipt of offers is not extended. It remains February 20, 2001. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on December 20, 2000. Documents related to this procurement are available over the Internet and are in Microsoft Office 97 format and reside on the World Wide Web (WWW) server which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/JSC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=CL&pin=73

Web Link

Click here for the latest information about this notice (http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=73#9-BH13-20-0-47P)

Record

Loren Data Corp. 20010213/58SOL011.HTM (D-040 SN50D2O3)