Communications Technology Laboratory

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class="grid-col"> <figure class="align-center nist-image" data-link="https://www.nist.gov/programs-projects/core-network-technologies"><a href="https://web.archive.org/web/20231223110406/https://www.nist.gov/programs-projects/core-network-technologies"><img alt="Core Network Tech 2" height="319" loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/480_x_480_limit/public/images/2022/04/24/Core%20Network2.png?itok=iShNHl0Z" typeof="foaf:Image" width="480"/></a><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure></div> <div class="grid-col"> <figure class="align-center nist-image" data-link="https://www.nist.gov/programs-projects/fundamental-electromagnetic-technologies-and-standards"><a href="https://web.archive.org/web/20231223110406/https://www.nist.gov/programs-projects/fundamental-electromagnetic-technologies-and-standards"><img alt="Fundamental Electromagnetic Technologies & Standards " height="319" loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/480_x_480_limit/public/images/2022/04/24/Fund%20Electromagnetic2%20.png?itok=lvaXUo1W" typeof="foaf:Image" width="480"/></a><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure></div> <div class="grid-col"> <figure class="align-center nist-image" data-link="https://www.nist.gov/advanced-communications/nextg-5g-and-beyond-technology"><a href="https://web.archive.org/web/20231223110406/https://www.nist.gov/advanced-communications/nextg-5g-and-beyond-technology"><img alt="Next Generation Wireless Systems" height="319" loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/480_x_480_limit/public/images/2022/04/24/Next%20Generation%20Wireless2.png?itok=0SrV96YJ" typeof="foaf:Image" width="480"/></a><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure></div> </div> <div class="grid-row grid-gap"> <div class="grid-col"> <figure class="align-center nist-image" data-link="https://www.nist.gov/ctl/pscr/about/public-safety-innovation-impacts"><a href="https://web.archive.org/web/20231223110406/https://www.nist.gov/ctl/pscr/about/public-safety-innovation-impacts"><img alt="Public Safety Communications" height="319" loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/480_x_480_limit/public/images/2022/04/24/Public%20Safety2.png?itok=Z5Jc6_rJ" typeof="foaf:Image" width="480"/></a><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure></div> <div class="grid-col"> <figure class="align-center nist-image" data-link="https://www.nist.gov/programs-projects/smart-infrastructure-and-manufacturing"><a 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src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/480_x_480_limit/public/images/2022/04/24/Spectrum%20Sharing%20%26%20Sensing2.png?itok=CY474YHg" typeof="foaf:Image" width="480"/></a><figcaption class="nist-image__caption"><div class="nist-image__caption-content" data-caption-editable="true"> </div> </figcaption></figure></div> </div> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <div class="grid-row grid-gap"> <div class="grid-col"> </div> <div class="grid-col"> </div> </div> </div> <div class="grid-row grid-gap"> <div class="grid-col"> </div> </div></div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">News and Updates</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-28bfccbc36779cadd36aa7a49fa35538485893c2490d0015e27d075c031abfe7"> <div> <article about="/news-events/news/2023/12/nist-researchers-installed-new-quantum-voltage-standard-spain" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/nist-researchers-installed-new-quantum-voltage-standard-spain" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/12/21/PJVS.jpg?itok=APg3CjKN" width="100" height="77" alt="Direct comparison between the NIST SRI PJVS 6000 and the NIST Traveling PJVS used for certification" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/nist-researchers-installed-new-quantum-voltage-standard-spain"><span property="schema:name">NIST Researchers Installed a New Quantum Voltage Standard in Spain</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-21T12:00:00Z">December 21, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> NIST  delivered the first NIST Standard Reference Instrument (SRI) to Spain’s oldest calibration laboratory, the  National Institute of Aerospace Technology </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2023/12/nist-releases-nextg-wireless-rd-gap-analysis" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/nist-releases-nextg-wireless-rd-gap-analysis" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/12/14/NextG%20Image.png?itok=YWwMJAnH" width="100" height="61" alt="NextG Communications Research and Development Gaps Report" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/nist-releases-nextg-wireless-rd-gap-analysis"><span property="schema:name">NIST Releases NextG Wireless R&D Gap Analysis</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-14T12:00:00Z">December 14, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> As the transition from fifth-generation wireless systems (5G) to next-generation communications systems (NextG) advances, research and development (R&D) </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2023/12/spotlight-feeding-your-machine-learning-system-good-data" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/spotlight-feeding-your-machine-learning-system-good-data" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/12/20/Bad_ML_meme.png?itok=LP6mYjHt" width="100" height="100" alt="Angry cat. Text reads: "When you feed your ML bad data"" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/spotlight-feeding-your-machine-learning-system-good-data"><span property="schema:name">Spotlight: Feeding Your Machine Learning System With Good Data</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-14T12:00:00Z">December 14, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> Om nom nom — what are you feeding your machine learning (ML) system? NIST researchers at the crossroads of communications technology and cybersecurity are </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2023/12/nist-releases-easyexpress-its-first-official-visual-studio-code-extension" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/nist-releases-easyexpress-its-first-official-visual-studio-code-extension" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/12/06/NIST_graphic_easyEXPRESS_solarPanel_1.4.png?itok=OzMUNXrj" width="100" height="50" alt="NIST easyEXPRESS software visual showing lines of code and additional context on errors and suggestions" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/news-events/news/2023/12/nist-releases-easyexpress-its-first-official-visual-studio-code-extension"><span property="schema:name">NIST Releases easyEXPRESS – its First Official Visual Studio Code Extension</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-12-06T12:00:00Z">December 6, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> In October 2023, NIST researchers released a preview version of easyEXPRESS , a tool to help EXPRESS-based standard developers. This release also marks an </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20231223110406/https://www.nist.gov/news-events/news-updates/org/5636">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Events</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-65d495944e33c8724c8454500ade58cc2234b1b9de2cdb4db3ec4ed3bb2a8268"> <div> <article about="/news-events/events/2024-pscr-uas-portfolio-workshop" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/news-events/events/2024-pscr-uas-portfolio-workshop"><span>2024 PSCR UAS Portfolio Workshop</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Wed, Feb 7 - Thu, Feb 8 2024</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The NIST Public Safety Communications Research (PSCR) Division is hosting a workshop on the management of cybersecurity </div> </div> </div> </article> </div> <footer> <div class="more-link"> <a href="/web/20231223110406/https://www.nist.gov/news-events/upcoming-events/org/5636">View All Events</a> <a href="/web/20231223110406/https://www.nist.gov/news-events/events/ou-calendar/5636">View Events Calendar</a> </div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Projects and Programs</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-fff533fe1bc9fc6fc46645dfe3c0b0021be94e41c799cae9856a7f46b09255e3"> <div> <article about="/programs-projects/5g-beyond" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/programs-projects/5g-beyond" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/projects/next_generation_5g_research.jpg?itok=kCtfgnOS" width="100" height="49" alt="NIST engineer Kate Remley led development of new 94 gigahertz calibrated signal source and 16-antenna array operating at 83 gigahertz" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/programs-projects/5g-beyond"><span>5G & Beyond</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> “5G and beyond” refers to future generations of mobile wireless communication systems. The vision for these next-generation systems are to enable groundbreaking </div> </div> </div> </article> </div> <div> <article about="/programs-projects/5g-core-networks-testbed" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/programs-projects/5g-core-networks-testbed" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/11/15/fig1_0.png?itok=q0HsfG3l" width="100" height="56" alt="5G Core Network Testbed Project" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/programs-projects/5g-core-networks-testbed"><span>5G Core Networks Testbed</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> </div> </div> </article> </div> <div> <article about="/programs-projects/5g6g-core-networks-and-services" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/programs-projects/5g6g-core-networks-and-services"><span>5G/6G Core Networks and Services</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> This program aims to advance networking and measurement sciences and promote consensus standards and best practices for the evolution from 5G to 6G , focusing </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20231223110406/https://www.nist.gov/laboratories/projects-programs/org/5636">View All Projects/Programs</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Awards</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-7657b7ac1cc19f73c968a10a0491a8d5d5af164395c371b2b38672c0d71044fe"> <div> <article about="/nist-awards/2022-bronze-medal-award-duncan-mcgillivray-adam-wunderlich-keith-forsyth-jack-sklar" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-bronze-medal-award-duncan-mcgillivray-adam-wunderlich-keith-forsyth-jack-sklar" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/18/BRONZE_forsyth%2Ckord%2Ckuester%2Cmcgillivary%2Cnelson%2Csanders%2Cwunderlich-comp.jpg?itok=Nmfbt01c" width="100" height="74" alt="2022 Bronze Medal Awardees" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-bronze-medal-award-duncan-mcgillivray-adam-wunderlich-keith-forsyth-jack-sklar"><span>2022 - Bronze Medal Award---Duncan McGillivray, Adam Wunderlich, Keith Forsyth, Jack Sklar, Daniel Kuester, Azizollah Kord, Robert Horansky, Eric Nelson, Frank Sanders</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="string-long">For development of a validated test methodology to measure the impact of newly deployed commercial cellular equipment on DoD Test Range systems.</div> </div> </div> </article> </div> <div> <article about="/nist-awards/2022-bronze-medal-award-avi-gopstein-cuong-nguyen-nelson-hastings-david-wollman" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-bronze-medal-award-avi-gopstein-cuong-nguyen-nelson-hastings-david-wollman" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/12/21/Gopstein.Wollman.Hastings.Nguyen.Bronze.jpg?itok=0FJnCGb7" width="100" height="60" alt="Avi Gopstein, Cuong Nguyen, Nelson Hastings and David Wollman bronze award" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-bronze-medal-award-avi-gopstein-cuong-nguyen-nelson-hastings-david-wollman"><span>2022 - Bronze Medal Award---Avi Gopstein, Cuong Nguyen, Nelson Hastings, David Wollman</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="string-long">For exemplary leadership and technical contributions in modernizing NIST’s strategic vision for power systems communication and information exchange.</div> </div> </div> </article> </div> <div> <article about="/nist-awards/2022-allen-v-astin-measurement-science-award-dazhen-gu-aaron-hagerstrom-benjamin-jamroz" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-allen-v-astin-measurement-science-award-dazhen-gu-aaron-hagerstrom-benjamin-jamroz" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/18/ASTIN-gu%2Chagerstrom%2Cjamroz%2Cjargon%2Cstanfield%2Cstoup%2Cwilliams-comp.jpg?itok=S6zz8k1_" width="100" height="99" alt="Allen V Astin Award 2022" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-allen-v-astin-measurement-science-award-dazhen-gu-aaron-hagerstrom-benjamin-jamroz"><span>2022 - Allen V. Astin Measurement Science Award---Dazhen Gu, Aaron Hagerstrom, Benjamin Jamroz, Jeffrey Jargon, Christian Long, Ann F. Monke, Eric Stanfield, Angela Stelson, John Stoup, Dylan Williams</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="string-long">For developing rigorous traceability with correlated uncertainties for microwave power and scattering parameters at 5G/6G communications frequencies.</div> </div> </div> </article> </div> <div> <article about="/nist-awards/2022-colleagues-choice-award-linda-derr" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-colleagues-choice-award-linda-derr" hreflang="en"><img loading="lazy" src="/web/20231223110406im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/12/20/Derr.ColleaguesChoice.jpg?itok=YGy70LJW" width="67" height="100" alt="Linda Derr Colleagues Choice" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20231223110406/https://www.nist.gov/nist-awards/2022-colleagues-choice-award-linda-derr"><span>2022 - Colleagues' Choice Award---Linda Derr</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="string-long">For innovation in the Boulder Professional Research Experience Program (PREP) enhancing growth, stakeholder communication, and collaborative research.</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20231223110406/https://www.nist.gov/awards/org/5636">View All Awards</a></div> </footer> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="grid-container"> <div class="nist-page__region nist-page__region--content-bottom"> <div class="nist-block nist-block--contact"> <h2 class="nist-block__title">Contacts</h2> <div class="nist-contact"> <h3 class="nist-contact__heading">Director, Communications Technology Lab</h3> <ul class="nist-contact__items"> <li class="nist-contact__item"> <div class="nist-contact__name"> Dereck Orr </div> <div> <a href="https://web.archive.org/web/20231223110406/mailto:dereck.orr@nist.gov">dereck.orr@nist.gov</a> </div> <div> (303) 497-5400 </div> <div> 325 Broadway <br> MS 670.00 <br> Boulder, CO 80305-3337 </div> </li> </ul> </div> </div> </div> </div> </section> </div> <div data-elastic-exclude>  <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/web/20231223110406/https://www.nist.gov/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/web/20231223110406im_/https://www.nist.gov/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo" width="300px" height="42px"/> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="https://web.archive.org/web/20231223110406/tel:301-975-2000">301-975-2000</a> </address> <p> <a href="https://web.archive.org/web/20231223110406/mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://web.archive.org/web/20231223110406/https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://web.archive.org/web/20231223110406/https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--twitter-white" href="https://web.archive.org/web/20231223110406/https://twitter.com/NIST"> <span>Twitter</span> </a> <a class="nist-social nist-social--facebook-white" href="https://web.archive.org/web/20231223110406/https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href="https://web.archive.org/web/20231223110406/https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href="https://web.archive.org/web/20231223110406/https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href="https://web.archive.org/web/20231223110406/https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href="https://web.archive.org/web/20231223110406/https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href="https://web.archive.org/web/20231223110406/https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href="https://web.archive.org/web/20231223110406/https://public.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? 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