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<h1>ITS: The Nation’s Spectrum and Communications Lab</h1>
<p><span style="font-size: 1.2em;"><span style="line-height: 1.5em;">Our mission is to ADVANCE innovation in communications technologies, INFORM spectrum and communications policy for the benefit of all stakeholders, and INVESTIGATE our
Nation’s most pressing telecommunications challenges through research that employees are proud to deliver. Learn more about ITS on our
<a rel="noopener" href="https://www.youtube.com/watch?v=IBWp_T79ZZ8&list=PLO2lqCK7WyTBV5JZrCd77CvJT6LhU_XJv" target="_blank">YouTube Channel</a> or read about our research programs in the <span
class="pubTR"><a id="ContentPlaceHolderDefault_Main_BrowsePublicationsJQ_4_rm1_rm2_10_pr_0_hlPubTitle_0" href="/publications/3209.aspx">Technical Progress Report</a>.</span></span></span></p>
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<div class="header-2"><a href="/about-its/archive/2020/isart-2020-presentations-available-now.aspx">ISART 2020 Presentations Available Now</a></div>
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<p><em>August 18, 2020</em></p>
<p>Presentations from the ISART 2020, the International Symposium on Advanced Radio Technologies: 5G Spectrum and a Zero-Trust Network are now available on the <a data-udi="umb://document/7e4c9dcc81a34af8aa468c9bea01fc1e"></a>...</p>
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<div class="header-2"><a href="/about-its/archive/2020/its-releases-open-metadata-extensions-for-sharing-and-reusing-rf-measurement-data.aspx">ITS Releases Open Metadata Extensions for Sharing and Reusing RF Measurement Data</a></div>
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<p><em>April 2, 2020</em></p>
<p>The Open, Public, Electronic, and Necessary (OPEN) Government Data Act, signed into law on January 14, 2019, requires federal agencies to publish their information online as open data, using standardized, machine-readable...</p>
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<div class="header-2"><a href="/about-its/archive/2019/its-open-sources-p528-reference-software-implementation.aspx">ITS Open Sources P.528 Software Implementation</a></div>
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<p><em>May 9, 2019</em></p>
<p>ITS has a long history of leadership in air-to-ground propagation model development within the International Telecommunications Union – Radiocommunication Sector’s (ITU-R) Study Group 3 – Radiowave Propagation (and its...</p>
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<div class="header-2"><a href="/about-its/archive/2019/expanding-spectrum-use-detecting-and-avoiding-radar-signals.aspx">Expanding Spectrum Use: Detecting and Avoiding Radar Signals</a></div>
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<p><em>March 10, 2019</em></p>
<p>How can we get more use out of the radio spectrum? One way is by sharing radio bands between users who have never shared before. Consider radio frequencies near 3.5 GHz. Until recently, that part of the spectrum was...</p>
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<div class="header-2"><a href="/about-its/archive/2018/measurement-best-practices.aspx">Measurement Best Practices</a></div>
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<p><em>November 26, 2018</em></p>
<p><span>Behind every initiative to share spectrum are models of how radio waves in a particular band propagate through different environments. How far will a signal travel before it becomes too faint to be useful or</span>...</p>
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<a href="/publications/3279.aspx"><span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label5_0">NTIA Special Publication</span> <span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label4_0">SP-22-560</span>: <span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_lblTitle_0">5G In-Air Field Strength Measurements for Radar Altimeter Research</span></a>
<span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label3_0">March</span> <span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label2_0">2022</span>, <span
id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label1_0">Frank H. Sanders; Kenneth Tilley; Geoffrey A. Sanders</span>. <em><span
id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label7_0"></span></em>
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<p><em>The topic of radio interference that might possibly occur from some U.S. 5G transmitters to band-adjacent airborne radar altimeter (radalt) receivers is currently of great interest to federal agenc...</em></p>
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<p>
<a href="/publications/3276.aspx"><span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label5_1">NTIA Technical Report</span> <span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label4_1">TR-22-557</span>: <span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_lblTitle_1">Tropospheric Scatter: Theory vs. Predictive Models</span></a>
<span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label3_1">February</span> <span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label2_1">2022</span>, <span
id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label1_1">Roger A. Dalke</span>. <em><span id="ContentPlaceHolderDefault_Main_ctl02_NewPublicationsHome_5_rptResults_Label7_1">Circa 1960, the National Bureau
of Standards intensively studied over-the-horizon radio propagation due to tropospheric (aka forward) scatter. The results of that effort, published in the form of grap...</span></em>
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<div class="header-2">This Month in ITS History</div>
<h3>March 1915: NBS Radio Section Funded</h3>
<p><span
style="font-size: 11.0pt; line-height: 115%; font-family: 'Calibri','sans-serif'; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">On
March 4, 1915 the National Bureau of Standards received its first appropriation for radio research. The Bureau had been investigating radio-wireless technology since 1913 in the electricity division, but, for the first time, the new
budget for Fiscal Year 1916 included a separate line item of “$10,000 for the investigation and standardization of methods and instruments employed in radio communication.” F.A. Kolstler and J.H. Dellinger, well regarded researchers from
the electricity division, divided the leadership of the new radio lab. While Kolstler was named chief of the section on the organizational paperwork, his duties were focused on military applications for the new technology. Dellinger,
listed as a research assistant, was in charge of personnel, publications, and his own research lab. By the next year, the radio section had outgrown its lab space and Congress appropriated an additional $50,000 for the construction of a
building south of the Bureau’s existing electrical building. The 1918 construction costs of the two-story Radio Building included two one-hundred-fifty foot antennas. Over the years the work of the radio section changed to keep up with
new technologies and new needs. Its name also changed—the NBS Radio Section became the Inter-service Radio Propagation Laboratory in 1940, the Central Radio Propagation Laboratory in 1946, the Institute for Telecommunication Science and
Aeronomy in 1964, and finally the Institute for Telecommunication Sciences in 1967. ITS is the country’s principal resource for governmental radio research and still works to improve the scientific understanding that underlies cellular,
satellite, and public safety communications as well asother radio technologies such as Wi-Fi, radar, and GPS.</span></p>
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ITS: THE NATION’S SPECTRUM AND COMMUNICATIONS LAB
Our mission is to ADVANCE innovation in communications technologies, INFORM
spectrum and communications policy for the benefit of all stakeholders, and
INVESTIGATE our Nation’s most pressing telecommunications challenges through
research that employees are proud to deliver. Learn more about ITS on our
YouTube Channel or read about our research programs in the Technical Progress
Report.
ISART 2020 Presentations Available Now
August 18, 2020
Presentations from the ISART 2020, the International Symposium on Advanced Radio
Technologies: 5G Spectrum and a Zero-Trust Network are now available on the ...
ITS Releases Open Metadata Extensions for Sharing and Reusing RF Measurement
Data
April 2, 2020
The Open, Public, Electronic, and Necessary (OPEN) Government Data Act, signed
into law on January 14, 2019, requires federal agencies to publish their
information online as open data, using standardized, machine-readable...
ITS Open Sources P.528 Software Implementation
May 9, 2019
ITS has a long history of leadership in air-to-ground propagation model
development within the International Telecommunications Union –
Radiocommunication Sector’s (ITU-R) Study Group 3 – Radiowave Propagation (and
its...
Expanding Spectrum Use: Detecting and Avoiding Radar Signals
March 10, 2019
How can we get more use out of the radio spectrum? One way is by sharing radio
bands between users who have never shared before. Consider radio frequencies
near 3.5 GHz. Until recently, that part of the spectrum was...
Measurement Best Practices
November 26, 2018
Behind every initiative to share spectrum are models of how radio waves in a
particular band propagate through different environments. How far will a signal
travel before it becomes too faint to be useful or...
New Publications
* NTIA Special Publication SP-22-560: 5G In-Air Field Strength Measurements for
Radar Altimeter Research March 2022, Frank H. Sanders; Kenneth Tilley;
Geoffrey A. Sanders.
The topic of radio interference that might possibly occur from some U.S. 5G
transmitters to band-adjacent airborne radar altimeter (radalt) receivers is
currently of great interest to federal agenc...
* NTIA Technical Report TR-22-557: Tropospheric Scatter: Theory vs. Predictive
Models February 2022, Roger A. Dalke. Circa 1960, the National Bureau of
Standards intensively studied over-the-horizon radio propagation due to
tropospheric (aka forward) scatter. The results of that effort, published in
the form of grap...
This Month in ITS History
MARCH 1915: NBS RADIO SECTION FUNDED
On March 4, 1915 the National Bureau of Standards received its first
appropriation for radio research. The Bureau had been investigating
radio-wireless technology since 1913 in the electricity division, but, for the
first time, the new budget for Fiscal Year 1916 included a separate line item of
“$10,000 for the investigation and standardization of methods and instruments
employed in radio communication.” F.A. Kolstler and J.H. Dellinger, well
regarded researchers from the electricity division, divided the leadership of
the new radio lab. While Kolstler was named chief of the section on the
organizational paperwork, his duties were focused on military applications for
the new technology. Dellinger, listed as a research assistant, was in charge of
personnel, publications, and his own research lab. By the next year, the radio
section had outgrown its lab space and Congress appropriated an additional
$50,000 for the construction of a building south of the Bureau’s existing
electrical building. The 1918 construction costs of the two-story Radio Building
included two one-hundred-fifty foot antennas. Over the years the work of the
radio section changed to keep up with new technologies and new needs. Its name
also changed—the NBS Radio Section became the Inter-service Radio Propagation
Laboratory in 1940, the Central Radio Propagation Laboratory in 1946, the
Institute for Telecommunication Science and Aeronomy in 1964, and finally the
Institute for Telecommunication Sciences in 1967. ITS is the country’s principal
resource for governmental radio research and still works to improve the
scientific understanding that underlies cellular, satellite, and public safety
communications as well asother radio technologies such as Wi-Fi, radar, and GPS.
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United States Department of Commerce
National Telecommunications and Information Administration
Institute for Telecommunication Sciences
325 Broadway, Boulder, CO 80305-3337
(303) 497-3571 itsinfo@ntia.gov
The Institute for Telecommunication Sciences (ITS) is the research and
engineering laboratory of the National Telecommunications and Information
Administration (NTIA), an agency of the U.S. Department of Commerce (DOC). ITS
performs basic research in radio science that provides the technical foundation
for NTIA's policy development and spectrum management activities.
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