International Space Station Ham Radio (also known as Amateur Radio on the International Space Station (ARISS)) (ISS Ham Radio (ARISS)) - 01.16.19

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
Since the earliest space station expeditions, International Space Station Ham Radio (ISS Ham Radio) has allowed groups of students in schools, camps, museums and planetariums to hold a conversation with the people living in space. As the International Space Station (ISS) passes overhead, students have about 9 minutes to ask crew members 10 to 20 questions.
Science Results for Everyone
Information Pending

The following content was provided by Kenneth Glenn Ransom, and is maintained in a database by the ISS Program Science Office.
Experiment Details

OpNom: ISS Ham

Principal Investigator(s)
FRANK H. BAUER, ARISS-International Working Group, Silver Spring, MD, United States

Mark Steiner, Lanham, MD, United States

Amateur Radio on ISS (ARISS) International Working Group, Silver Spring, MD, United States
American Radio Relay League (ARRL), Newington, CT, United States
American Satellite Corporation (AMSAT), Silver Spring, MD, United States
Center for the Advancement of Science in Space (CASIS), Melbourne, FL, United States
NASA SCaN, Washington , DC, United States

Sponsoring Space Agency
National Aeronautics and Space Administration (NASA)

Sponsoring Organization
National Laboratory Education (NLE)

Research Benefits
Information Pending

ISS Expedition Duration
November 2000 - December 2002; November 2002 - May 2003; April 2003 - March 2016; March 2016 - March 2020

Expeditions Assigned

Previous Missions
ISS Ham has been conducted on the International Space Station since Expedition 1 following the delivery of the ham radio to the ISS. Previous amateur radio experiments were flown on the Space Shuttle under the name SAREX (Shuttle Amateur Radio Experiment).

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Experiment Description

Research Overview

  • In preparation for International Space Station Ham Radio (ISS Ham Radio), students research the ISS and learn about radio waves, ham (amateur) radio and related topics. Before their scheduled contact with the ISS, students prepare a list of questions on topics they have researched, many of which have to do with career choices and science activities aboard the ISS. Depending on the amount of time and complexity of the questions, from 10 to 20 questions are asked during one of the sessions.
  • As the ISS passes over a school or another location that receives a signal from the ISS, there is typically a 9-minute window to make contact with the ISS crew.
  • Only a few students ask questions due to the limited time available. Hundreds of other people are usually listening to the event from their classrooms or auditorium or via live streaming video.

International Space Station Ham Radio (ISS Ham Radio) provides opportunities to engage and educate students, teachers, parents and other members of the community in science, technology, engineering and math. Through the use of NASA educational resources, the ISS Ham Radio contact and related activities are integrated into the educational curriculum. ISS Ham Radio reaches a diverse population nationally and internationally in both formal (schools, universities) and informal (museums, camps, scout troops, planetariums, Challenger Learning Centers) settings. Opportunities exist for experimentation and for the evaluation of new technology as it relates to this program.

ISS Ham Radio also provides a contingency communications network for NASA and the ISS crew.

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Space Applications
In preparation for their conversation with orbiting crew members, students learn about radio waves, amateur radio and related science topics. Students conduct research to prepare their questions, which often discuss science activities aboard the ISS and the career choices that led to a trip to space. In addition to inspiring new generations of space engineers, ISS Ham Radio serves as a backup communications network between the ISS crew and NASA.

Earth Applications
Direct contact with an orbiting outpost captures students’ imaginations and sparks a wide range of school activities related to science, technology, engineering and mathematics. While only a handful of students are able to ask questions in the brief flyover window, typically hundreds of other students are listening from their classrooms or the auditorium.

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Operational Requirements and Protocols

The ISS ham radio is needed to successfully conduct an ISS Ham Radio session. During the sessions the crew members answer questions from the students for approximately 10 minutes. These activities are scheduled as time is available from the crew members.

ISS Ham Radio requires that the crew position themselves in front of the ISS ham radio equipment during each session.

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Decadal Survey Recommendations

Information Pending

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Results/More Information

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Related Websites
Amateur Radio on the International Space Station (ARISS)

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image NASA Image: ISS014E18307 - Astronaut Sunita L. Williams, Expeditions 14 and 15 Flight Engineer, talks with students at the International School of Brussels in Belgium during a ham radio pass from Amateur Radio on the International Space Station (ARISS) in the Zvezda Service Module.
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image Students attending Hanazono Elementary School in Akashi-city, Japan get together for an ARISS contact with Sunita Williams in February 2007. Image courtesy of Satoshi Yasuda, 7M3TJZ.
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NASA Image: ISS024E013397 - Doug Wheelock as he uses a HAM radio in the service module.

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image NASA Image: ISS034E023686 - View of CSA Chris Hadfield during Ham radio session.
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image NASA Image: ISS039E016502 - JAXA astronaut Koichi Wakata poses for a photo as he conducts a ham radio session.
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NASA Image: ISS040E024110 - NASA astronaut Reid Wiseman conducting a ham radio session on board the International Space Station.

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