Category: Hamradio from ISS

Re-post from ANS-060:

Amateur Radio on the International Space Station (ARISS) reports that the packet radio in the Zvezda Service Module has been configured for temporary APRS operation on 437.825 MHz. The system is expected to remain active for testing through March 2, 2026, giving stations worldwide an opportunity to receive packet transmissions and attempt limited digipeating through the orbiting station.

Operators wishing to access the ISS digipeater are advised to include ARISS or APRSAT in the PATH field of their transmissions. The Service Module station is operating under the call sign RSØISS using FM packet at 1200 bps. ARISS recommends transmit power of 5 watts or less, preferably with a directional antenna, to improve uplink reliability and help minimize interference.

The current activation follows a prolonged outage of the Service Module amateur radio system that began during ARISS SSTV Series 30 in November 2025. Images were received early in the event, but subsequent passes produced no SSTV transmissions, and the event was ultimately scrubbed. The Service Module radio used for APRS and SSTV was then taken out of service while teams investigated the problem.

Subsequent ARISS updates reported that the primary Kenwood D710GA radio was replaced with an onboard spare D710E while teams continued troubleshooting and preparing reset procedures. Status reports in the following months continued to show the Service Module radio offline while restoration efforts were planned and carried out.

The newly announced APRS configuration suggests the system is now being evaluated through on-orbit testing following these repair activities. Temporary activations such as this allow radio amateurs worldwide to help confirm reception, observe system behavior, and provide useful reports while the station’s amateur radio capability is assessed.

ARISS encourages operators to monitor official status channels for schedule updates and to share reception reports as testing continues. Additional information on ISS amateur radio operations and current station status is available at https://www.ariss.org.

[ANS thanks Amateur Radio on the International Space Station (ARISS) for the above information]

Amateurs and others around the world may listen in on contacts between amateurs operating in schools and allowing students to interact with astronauts and cosmonauts aboard the International Space Station. The downlink frequency on which to listen is 145.800 MHz worldwide.

Successful Contacts

South-West State University, Kursk, Russia, direct via UB3WCL.
The ISS callsign was RSØISS.
The crewmember was Sergey Ryzhikov.
The ARISS mentor was A.R.C. ENERGIA, RV3DR.
Contact was successful on Saturday, November 22, 2025 at 14:54 UTC.

Moscow Aviation Institute, Moscow, Russia direct via R2AS.
The ISS callsign was RSØISS.
The crewmember was Oleg Platonov
The ARISS mentor was A.R.C. ENERGIA, RV3DR.
Contact was successful on Mon 2025-11-24 14:56 UTC.

Upcoming Contacts

Lincoln Magnet School, Springfield, Illinois, direct via K9OK.
The ISS callsign is presently scheduled to be NA1SS.
The scheduled crewmember is Jonathan (Jonny) Kim, KJ5HKP.
The ARISS mentor is Charlie Sufana.AJ9N.
Contact is go for Friday, December 5, 2025 at 15:29 UTC.

Russian State Agrarian University – Moscow Agricultural Academy named after K.A. Timiryazev, Moscow, Russia, direct via TBD.
The ISS callsign is presently scheduled to be RSØISS.
The scheduled crewmember is Sergey Kud-Sverchkov.
The ARISS mentor is A.R.C. ENERGIA, RV3DR.
Contact is go for Friday, December 5, 2025 at 11:00 UTC.

• The crossband repeater continues to be active (145.990 MHz up {PL 67} & 437.800 MHz down). If any crewmember is so inclined, all they have to do is pick up the microphone, raise the volume up, and talk on the crossband repeater. So give a listen, you just never know.
• The packet system is also active (145.825 MHz up & down).
• As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol.
• Note, all times are approximate. It is recommended that you do your own orbital prediction or start listening about 10 minutes before the listed time.
• The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html .
• The latest list of frequencies in use can be found at https://www.ariss.org/contact-the-iss.html .

[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors for the above information.]

Re-post from ANS-313:

Amateur Radio on the International Space Station (ARISS) will commemorate the 25th anniversary of continuous human presence aboard the International Space Station with a special worldwide Slow-Scan Television (SSTV) event in mid-November. The ISS has been continuously inhabited since November 2, 2000, marking a major milestone in human spaceflight and international cooperation. ARISS, the first educational payload on the station, continues to play a key role in inspiring students, supporting STEM engagement, and connecting the global amateur radio community with astronauts in orbit.

The Series 30 SSTV event, titled “ISS at 25 and Scouts!” will feature 12 SSTV images celebrating the station’s 25-year milestone and Scouting. Transmissions are scheduled to begin Wednesday, November 12 around 1730 UTC and continue through Thursday, November 20 (time TBD). Downlink will occur on 145.800 MHz FM using the PD120 mode, following the standard ARISS pattern of approximately two minutes of transmission followed by two minutes off. A planned pause in images will occur to support an ARISS school contact with Azerbaijan on November 16 at 1450 UTC.

Radio amateurs and listeners worldwide are encouraged to participate, as ISS SSTV events are accessible to stations with a broad range of equipment. Many operators successfully receive images using only a handheld VHF radio and a phone-based decoding app, while more advanced satellite stations can produce particularly clean results. SSTV events continue to be a popular entry point for newcomers interested in amateur space communication.

Participants may upload their best received image to the ARISS SSTV portal at https://ariss-usa.org/ARISS_SSTV/ and then request a commemorative event certificate. Submitted images must be single, unedited SSTV frames in GIF, JPG, or PNG format, limited to 800×800 pixels and 800 kB. Once the image is uploaded, operators will be prompted to request their personalized certificate, and because submissions are only accepted for a short time after the conclusion of the event, prompt participation is encouraged.

In keeping with past ARISS activities, operators may also request a traditional ARISS QSL card to confirm SSTV reception. QSL requests must be mailed to the appropriate regional bureau with a self-addressed stamped envelope or sufficient return postage. Details and mailing addresses for each world region are available at https://www.ariss.org/qsl-cards.html, and operators should include date, time, frequency, and mode with their report.

Additional updates and operating details will be posted on www.ariss.org and ARISS social media channels as the event approaches. AMSAT congratulates ARISS and the ISS program on 25 years of continuous human presence aboard the station and encourages radio amateurs everywhere to join in this special commemorative SSTV celebration honoring the ISS legacy and the role of amateur radio in space education.

[ANS thanks Amateur Radio on the International Space Station (ARISS) for the above information]

Time for a new #ariss SSTV transmission between May 5 – May 12. 145.800 MHz FM PD-120.

Repost from ANS-084

With the spectacular launch of SpaceX-30 on March 21, 2024, the HamTV system is now back on it’s on its way to the ISS. Although it is not expected that the HamTV equipment will be activated for at least a few weeks, the British Amateur Television Club (BAT) has created a new wiki page which gives a lot of information on how to receive, decode and display the DATV signals from the ISS. See:
https://wiki.batc.org.uk/HAMTV_from_the_ISS
There is also a discussion channel available on the site.

[ANS thanks Graham Shirville, G3VZV for the above information.]