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Varios ham radio satellites news.
Space-X Falcon 9 Transporter-17 launch 2026-07-07 contained a large amount of satellites, many of them un-coordinated 70 cm ham radio frequencies. It also will deploy MarmotSat.
A lot of information about the satellites at SatNogs:
https://community.libre.space/t/transporter-17-rideshare-vsfb-slc-4e-2026-07-07-07-10-utc/14950
The launch at Youtube:
MARMOTSat is a 3U CubeSat currently under development with an Amateur radio focus. It is slated to launch NET June 2026 on SpaceX Transporter-17.
MARMOTSat will use the following frequencies for TT&C and Amateur experiments:
| Amateur Experiment | Frequency |
|---|---|
| TT&C up- and downlink | 436.125 MHz |
| Digipeater up- and downlink | 145.875 MHz |
| CW telemetry beacon downlink | 145.875 MHz |
| CW telemetry beacon downlink | 29.410 MHz |
| DVB-S2 digital video beacon | 29.410 MHz |
| Linear frequency modulation downlink | 29.410 MHz |
Frequencies in each band are shared. The Amateur experiments which use the same frequencies are mutually exclusive and will never be run at the same time.
The Amateur payload is available to be used by all interested and propely licensed parties, gobally. The Amateur payload is the debut of the Modular CubeSat Radio, featuring the RF modules necessary to facilitate MARMOTSat’s Amateur radio and ionospheric science experiments. The MCR configuration for this mission is the core consisting of the SDR, computer and camera, as well as HF and VHF RF front ends, and wire antennas:
Full information at: https://www.propagationlab.ca/satellite/
Image: Reception of a 5.84 GHz CW signal from Fuji-OSCAR 126 (FO-126) displayed on an Icom IC-905. [Credit: JA1OGZ]
OrigamiSat-2, one of eight satellites launched aboard Rocket Lab’s Kakushin Rising mission for JAXA on April 23, 2026, has now received an official OSCAR designation from AMSAT. Developed by the Institute of Science Tokyo, the satellite has been assigned the designation Fuji-OSCAR 126 (FO-126) following a request submitted through the Japan Amateur Satellite Association (JAMSAT). The announcement came after satellite teams confirmed successful deployment and initial on-orbit operations.
The 3U CubeSat was designed to demonstrate lightweight deployable membrane antenna technology and promote amateur use of the 5.8 GHz band. Mission goals include testing a high-gain deployable reflector array antenna, demonstrating its performance in orbit, and helping establish methods for future advanced satellite systems. OrigamiSat-2 carries both UHF and C-band transmitters and aims to expand amateur radio experimentation beyond traditional VHF and UHF operations.
IARU coordination lists downlinks on 437.505 MHz and 5840.000 MHz. The satellite supports CW and digital modes, including higher-speed data experiments over its 5.8 GHz link. Project information released by the team indicates a desire to openly share reception techniques and operational status with amateur operators, encouraging wider participation in receiving and decoding signals from the spacecraft.
Reports from the satellite team indicate the 5.8 GHz downlink has already been confirmed operational. Amateur satellite observers have expressed interest in monitoring activity from outside Japan as additional operational details become available. OrigamiSat-2 now joins the long-running OSCAR satellite tradition under its new designation, Fuji-OSCAR 126, continuing the international partnership between satellite developers and the amateur radio community.
[ANS thanks Drew Glasbrenner, KO4MA, AMSAT President / OSCAR Number Administrator, and Shiro Sakai, JH4PHW, JAMSAT President, for the above information]
Re-post from ANS-123:
Fuji-OSCAR 29 (FO-29 / JAS-2), the long-lived Japanese amateur radio satellite launched in 1996, continues to operate its V/U inverting analog linear transponder under the control of the Japan Amateur Radio League (JARL). Because the onboard batteries have failed years ago, the satellite depends entirely on solar power and can only function when its solar panels are illuminated.
Current Status (May 2026)
FO-29 entered a full-sunlight orbit in early March 2026 and lasted approximately 40 days. This continuous operation ended around April 21, 2026, after which the satellite entered an eclipse period for about one month.
A second, longer full-sunlight period is expected from approximately May 20 to mid-November 2026, during which continuous operation should resume.
Transponder Details
Mode: V/U inverting linear transponder (SSB and CW only)
Uplink: 145.900 – 146.000 MHz (LSB)
Downlink: 435.800 – 435.900 MHz (USB)
CW Beacon: 435.795 MHz (typically 100 mW)
Digitalker: 435.910 MHz FM (rarely activated)
The digital BBS (1k2/9k6) remains non-operational.
Operating Procedure
During eclipse periods (or the transition out of full sunlight), the JARL control team sends specific commands to activate the transponder at designated UTC times. If the transponder does not turn on within about 2 minutes of the command start, the team terminates the attempt.
During confirmed full-sunlight periods, no regular command schedule is needed — the transponder stays active whenever the satellite is in sunlight.
Operators should always check real-time status via AMSAT Live Satellite Status, OSCAR Status pages, or recent community reports, as voltage instability in the aging satellite can occasionally cause unexpected behavior.
The scheduled activations for the eclipse period are:
May
1st 22:56~
2nd 22:00~
3rd 22:51~
4th 21:55~
5th 22:45~
6th 21:50~
7th 22:40~
8th 21:44~
9th 22:35~
15th 22:19~
16th 23:10~
Amateurs are reminded to:
The JARL page provides the detailed historical and upcoming command schedules for eclipse periods across 2025–2026. For the absolute latest status and any updates from the Japanese control team, monitor the official JARL FO-29 page, AMSAT.org, and AMSAT bulletins.
FO-29’s continued operation nearly 30 years after launch remains a testament to robust engineering and the dedication of the JARL team.
[ANS thanks JARL for the above information.]
From ANS-102 and JARL: here is an update about FO-29:
Fuji-OSCAR 29 (FO-29 / JAS-2), the long-lived Japanese amateur radio satellite launched in 1996, continues to operate its V/U inverting analog linear transponder under the control of the Japan Amateur Radio League (JARL). Because the onboard batteries have failed years ago, the satellite depends entirely on solar power and can only function when its solar panels are illuminated.
In early-to-mid April 2026 (while still in the March full-sunlight window), expect the transponder to be available on most or all illuminated passes with no fixed on/off times. After approximately April 21, operation will shift back to scheduled command activations until the next full-sunlight season begins in late May.
The scheduled activations for the eclipse period are:
April
24th 22:22~
25th 21:27~
28th 22:11~
May
1st 22:56~
2nd 22:00~
3rd 22:51~
4th 21:55~
5th 22:45~
6th 21:50~
7th 22:40~
8th 21:44~
9th 22:35~
15th 22:19~
16th 23:10~
Amateurs are reminded to:
The JARL page provides the detailed historical and upcoming command schedules for eclipse periods across 2025–2026. For the absolute latest status and any updates from the Japanese control team, monitor the official JARL FO-29 page, AMSAT.org, and AMSAT bulletins.
FO-29’s continued operation nearly 30 years after launch remains a testament to robust engineering and the dedication of the JARL team.
[ANS thanks JARL for the above information]
Repost: ANS-074
The 6U CubeSat Ten-Koh 2 (also written as Tenkoh-2 or てんこう２) from Japan’s Nihon University was successfully deployed into orbit on March 11, 2026, at approximately 09:34 UTC. The satellite was released from JAXA’s new HTV-X1 cargo spacecraft using the HTV-X Small Satellite Orbital Deployer (H-SSOD) after the vehicle departed the International Space Station (ISS) on March 6 and raised its altitude to around 500 km. This marks the first use of the H-SSOD mechanism for satellite deployment from HTV-X.
Developed by the Okuyama Laboratory in the Department of Aerospace Engineering at Nihon University’s College of Science and Technology, Ten-Koh 2 builds on the legacy of its predecessor, Ten-Koh (launched in 2018). The mission focuses on low-Earth orbit environmental observations to gather data for future space development, alongside in-orbit demonstrations of next-generation communication technologies. Key goals include evaluating high-speed data transmission and enabling global access for amateur radio operators to collect telemetry and experiment with the payloads.
The satellite carries an amateur radio payload coordinated by the International Amateur Radio Union (IARU) and supported by JAMSAT (Japan Amateur Satellite Association):
The transponder is expected to operate on a scheduled basis (initially two days per week, with details forthcoming from the team). Operations began shortly after deployment, with the university’s ground station confirming reception of the CW beacon for basic telemetry (voltage, temperature, etc.).
Post-deployment updates from the Okuyama Lab indicate the signal level is currently weaker than anticipated, prompting ongoing monitoring and appeals for reception reports via networks like SatNOGS to aid diagnostics and performance assessment. Early passes over Japan and other regions have yielded mixed results, with some operators reporting no signals yet, while preliminary TLEs (e.g., temporary NORAD 98542) are circulating for tracking.
[ANS thanks the Okuyama Laboratory at Nihon University for the above information]