Amateur Radio on the International Space Station (ARISS), operating in the Amateur-satellite service, is a project sponsored by various entities and carried out by astronauts and

cosmonaut An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft. Although generally r ...

s on the

International Space Station The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA ( ...

who also have an

amateur radio license Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency comm ...

. The program was previously called SAREX, the Space Amateur Radio Experiment, and before that the

Shuttle Amateur Radio Experiment The Shuttle Amateur Radio Experiment (SAREX), later called the Space Amateur Radio Experiment, was a program that promoted and supported the use of amateur ("ham") radio by astronauts in low earth orbit aboard the United States Space Shuttle to co ...

. In 2011, Kenwood Electronics launched an advertising campaign capitalizing on the fact that their TM-D700A transceiver is currently in use on the ISS. Amateur radio operators all over the world are able to speak directly to astronauts/cosmonauts via their handheld, mobile, or home radio stations. Low power radios and small antennas can be used to establish communications. It is also possible to send digital data to the space station via laptop computers hooked up to the same radio and antenna, similar to an email communication, except that it uses radio frequencies instead of telephone or cable connections. This has been done by a youtube channel known by the name "Retro Recipes" but instead of using a laptop he used a Commodore 64 along with a modem and a terminal. The experiment was successful and the international space station even broadcast the message back to earth. The space station occupants work a standard work day and have breaks in the evening and during meals. While on break, some of them will spend some time communicating with "earthlings" via amateur radio.

Interoperable Radio System (IORS)

Interoperable Radio System (IORS) is the foundation element of the ARISS next-generation radio system on ISS. A total of four flight units and ten total units are being built by the ARISS hardware team. This first IORS radio was flown to ISS on

SpaceX CRS-20 SpaceX CRS-20 (CRS-20), also known as SpaceX-20, was a Commercial Resupply Service mission to the International Space Station (ISS) launched on 7 March 2020. The mission was contracted by NASA and was flown by SpaceX using Dragon. This was S ...

and installed in the ISS Columbus module by

Expedition 63 Expedition 63 was the 63rd long duration mission to the International Space Station, which began on 17 April 2020 with the undocking of the Soyuz MS-15 spacecraft and continued until the undocking of the Soyuz MS-16 spacecraft on 21 October 20 ...

Commander, Chris Cassidy on September 2, 2020. System activation was first observed at 01:02 UTC on September 2 by ARISS control station and amateur radio ground operators. Initial operation of the new radio system began as an FM cross band repeater. A second flight unit is expected to be launched on a later 2020 cargo flight for installation in the Russian Service module. The IORS will include a higher power radio, an enhanced voice repeater, updated digital packet radio (APRS) capabilities and slow scan television (SSTV) capabilities for both the US and Russian segments. The IORS consists of a special, modified JVCKenwood D710GA transceiver, an AMSAT-developed multi voltage power supply and interconnecting cables. Future upgrades and enhancements to the next generation system are in various stages of design & development. These include a repaired Ham Video system (currently planned for launch in mid-to-late 2020), L-band (uplink) repeater, ground command operations capability, LimeSDR signal reception, a microwave “Ham Communicator” and Lunar Gateway prototype experiment.

Notes

External links

* ARISS amateur radi
website
* amateur radio operator
ISS Fanclub

Station to Saly : short documentary about an ARISS contact with French School in Senegal
{{Spaceflight Amateur radio organizations Articles containing video clips