NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

61 -- RF COAXIAL CABLE SOL 8-1-0-E1-C9922 DUE 090700 POC Debbie R. Matthews, Contract Specialist, Phone (256) 544-8945, Fax (256) 961-0059, Email debbie.r.matthews@msfc.nasa.gov -- Amy B. Campbell, Contracting Officer, Phone (256) 544-8620, Fax (256) 544-9081, Email Amy.Campbell@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=62#8-1-0-E1-C9922. E-MAIL: Debbie R. Matthews, debbie.r.matthews@msfc.nasa.gov. THIS NOTICE CONSTITUTES AMENDMENT NO. ONE TO THE COMBINED SYNOPSIS/RFQ FOR RF COXIAL CABLE. 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 list ten critical specifications for the RF coaxial cable requirement as follow: (1) Cables must have a nominal 50 Ohm impedance from DC to 26.5 GHz (2) Cables must have an Insertion Loss no greater than 0.40 dB per meter at 1 GHz 1.35 dB per meter at 10 GHz 1.85 dB per meter at 18 GHz 2.25 dB per meter at 26.5 GHz (3) Cables must have an Outer Diameter No Larger Than 0.25 Inch, with a bend radius not less than 0.5 Inch. (4) Cables must have an Fluorinated Ethylene Propylene (FEP) Teflon Outer Jacket material. (5) Cables must utilize Stainless Steel Radio-Frequency Connectors (conforming to MIL-C-39012) with VSWR of 1.20:1 or better over the following frequencies: Precision N Connectors: DC -- 18 GHz Precision TNC Connectors: DC -- 18 GHz Non-Precision SMA Connectors: DC -- 18 GHz Precision SMA Connectors: DC -- 26.5 GHz (6) Absolutely NO Cadmium materials or alloys whatsoever (for use in Thermal-Vacuum Chambers for Human Safety/Carcinogens) (7) Stranded (not Solid) Silver-Plated Copper Wire Center Conductor (8) Cables and connectors must be rated to withstand temperatures from -65 degrees C to +165 degrees C. (9) Dielectric Material must be Low density PTFE per MIL-C-17, with a dielectric constant ranging between 1.4 and 1.7. (10) Cables must be Double-Shielded per the following specifications: (a) Inner shield: Silver-plated copper tape per ASTM B-298, helically wrapped with 40% minimum overlap between layers (b) Outer Shield: Silver-plated copper wire per ASTM B-298, tightly braided over the inner shield. The due date for receipt of offers is not extended. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on or before September 7, 2000. Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) 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/MSFC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=CL&pin=62 Posted 08/22/00 (D-SN488834). (0235)

Loren Data Corp. http://www.ld.com (SYN# 0268 20000824\61-0004.SOL)

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