ISS SSTV experiment

Friday and Saturday August 6 – 7, 2021, Russian cosmonauts onboard the International Space Station will transmit SSTV images from the station on 145.800 MHz FM. They will use SSTV mode PD-120.
The transmissions are part of the Moscow Aviation Institute SSTV experiment (MAI-75) and will be sent via RS0ISS, the ham station in the Russian Zvezda (Service) module using a Kenwood TM-D710 transceiver.

The announced schedule is August 6, 10:50 UTC – 19:10 UTC and August 7, 09:50 UTC – 15:55 UTC. Dates and times are subject to change.


An ARISS Slow Scan TV (SSTV) event is scheduled from the International Space Station (ISS). This will be a special SSTV event to celebrate the 20th anniversary of ARISS onboard the International Space Station. The event is scheduled to begin on December 24 at 16:40 UTC and continue through December 31 ending at 18:15 UTC. Dates are subject to change due to ISS operational adjustments.

Images will be downlinked at 145.8 MHz +/- 3 KHz for Doppler shift and the expected SSTV mode of operation is PD 120. Radio enthusiasts participating in the event can post images they receive at the ARISS SSTV Gallery at .

After your image is posted at the gallery, you can acquire a special award by linking to and follow directions for submitting a digital copy of your received image.

First Element of ARISS Next Generation (Next-Gen) Radio System Installed in ISS Columbus Module

The ARISS team is pleased to announce that set up and installation of the first element of our next generation radio system was completed and amateur radio operations with it are now underway. This first element, dubbed the InterOperable Radio System (IORS), was installed in the International Space Station Columbus module. The IORS replaces the Ericsson radio system and packet module that were originally certified for spaceflight on July 26, 2000.

Initial operation of the new radio system is in FM cross band repeater mode using an uplink frequency of 145.99 MHz with an access tone of 67 Hz and a downlink frequency of 437.800 MHz. System activation was first observed at 01:02 UTC on September 2. Special operations will continue to be announced.

The IORS was launched from Kennedy Space Center on March 6, 2020 on board the SpaceX CRS-20 resupply mission. It consists of a special, space-modified JVC Kenwood D710GA transceiver, an ARISS developed multi-voltage power supply and interconnecting cables. The design, development, fabrication, testing, and launch of the first IORS was an incredible five-year engineering achievement accomplished by the ARISS hardware volunteer team. It will enable new, exciting capabilities for ham radio operators, students, and the general public. Capabilities include a higher power radio, voice repeater, digital packet radio (APRS) capabilities and a Kenwood VC-H1 slow scan television (SSTV) system.

A second IORS undergoes flight certification and will be launched later for installation in the Russian Service module. This second system enables dual, simultaneous operations, (e.g. voice repeater and APRS packet), providing diverse opportunities for radio amateurs. It also provides on-orbit redundancy to ensure continuous operations in the event of an IORS component failure.

Next-gen development efforts continue. For the IORS, parts are being procured and a total of ten systems are being fabricated to support flight, additional flight spares, ground testing and astronaut training. Follow-on next generation radio system elements include an L-band repeater uplink capability, currently in development, and a flight Raspberry-Pi, dubbed “ARISS-Pi,” that is just beginning the design phase. The ARISS-Pi promises operations autonomy and enhanced SSTV operations.

ARISS is run almost entirely by volunteers, and with the help of generous contributions from ARISS sponsors and individuals. Donations to the ARISS program for next generation hardware developments, operations, education, and administration are welcome — please go to to contribute to these efforts.

ARISS–Celebrating 20 years of continuous amateur radio operations on the ISS!

Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station (ISS). In the United States, sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL), the ISS National Lab-Space Station Explorers, and NASA’s Space Communications and Navigation program. The primary goal of ARISS is to promote exploration of science, technology, engineering, the arts, and mathematics topics by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students. Before and during these radio contacts, students, educators, parents, and communities learn about space, space technologies, and amateur radio. For more information, see

Media Contact:
Dave Jordan, AA4KN

Categories: ISS

ISS SSTV images

ARISS will be supporting SSTV transmissions worldwide in memory of cosmonauts Alexei Leonov, Valery Bykovsky and Sigmund Jähn. Event runs from Dec 28 (11:00 UTC is the setup time) until Jan 1, 2020 (18:20 UTC when the system is scheduled for shutdown). Transmissions should be on the standard frequency of 145.800 MHz and in the PD 120 format.

The picture on the diploma presents the characters of three astronauts who passed away in 2019.
From the left side:
Alexei Leonov – during the flight with the space ship Voskhod 2, on March 18, 1965, as the first man went into open space. The walk lasted 12 minutes and 9 seconds. He made his second space flight within the Soyuz-Apollo program (July 15 -21, 1975). Under this mission Soyuz 19 space ship merged with American Apollo. It was the first ever merger in the orbit of an American and a Soviet ships. In total, three American and two Soviet astronauts flew in both vehicles.
In the years 1970–1991 he was deputy commander of the Cosmonaut Training Center Yuri Gagarin.
He was also known as a painter creating paintings on subjects related to the conquest of space.
He died in Moscow on October 11, 2019, at the age of 85.

Valery Bykovsky – took part in three space missions. For the first time he flew into space in 1963 on board of the Vostok 5 spacecraft. For the second time 13 years later – in 1976 he was the commander of the Soyuz 22 crew. In 1978 he took off into space for the third time – as the commander of Soyuz 31 spacecraft. It was a flight to the Salut 6 space station within the Intercosmos program. He died at the age of 84, on March 27, 2019 in Star City near Moscow.

Sigmund Jähn from the then German Democratic Republic was the first German to fly into space. In the company of the above-mentioned Valery Bykovsky and on board of the Soyuz 31 spacecraft, he went to the Salut 6 space station, on August 26, 1978, as part of the Intercosmos program. After a 7-day trip, 20 hours, 49 minutes and 4 seconds, they both returned to Earth on board of the Soyuz 29 spacecraft. He died at the age of 82, on September 21, 2019 in Strausberg (Germany).