ASRTU-1 Launched November 4 2024

Re-post from ANS-315

On November 4, 2024 at 23:18 UTC, a Soyuz rocket launched from Vostochny with at least 17 satellites using amateur satellite service frequencies. Among those launched was ASRTU-1, a 12U CubeSat designed by Russian and Chinese students and developed by the Harbin Institute of Technology in Harbin, China, for education and amateur radio.

The satellite contains an FM transponder, which is currently operational, with an uplink of 145.850 MHz (67 Hz CTCSS tone required) and a downlink of 435.400 MHz. After the repeater detects the end of uplink, it will wait for 0.5s. If no new uplink in 0.5s, telemetry will be sent. So make fast QSOs so the telemetry is less like to interrupt you.

The satellite also contains two cameras with an SSDV downlink for low resolution images on 436.210 MHz, and a high speed downlink on 10460.00 MHz for high resolution images.

On November 7, 2024, the camera system was tested for the first time. N6RFM uplinked the command and the image was downloaded by Chinese stations using the UHF SSDV downlink.

Windows software for decoding telemetry is available at https://drive.google.com/file/d/1W8nm-P0_h0J1Bd1eif74mLo-EuRdWcjH

A Live ISO Linux image is also available for telemetry at https://drive.google.com/drive/folders/1T6GMNnDNEEavckoe4oPXPIU_SPFXLDd4

A Telegram group has been created for discussing the satellite: https://t.me/+I5NTtX7eAJA4ZDVl

Latest TLEs:

ASRTU-1_20241108D
1 99130U 24313.98869213 .00036395 00000-0 15511-2 0 00005
2 99130 097.3830 178.7387 0016365 224.8894 196.6964 15.22873038000014

ASRTU-1
	Uplink FM (67 Hz CTCSS)	Downlink FM	Comments
ASRTU-1	145.850 MHz	435.400 MHz	In orbit, commissioning
Also downlinks on 436.210 MHz, 10460.00 MHz. Download Live CD for telemetry decoding.

[ANS thanks BG2BHC, the IARU, and AMSAT-F for the above information]