for archieve:
"SSTV image transmission from the UmKA-1 RS40S satellite has begun in test mode.
Transmission will end on November 23 at 18:20 UTC.
Interval: ~200 sec
Frequency: 437.625 MHz
Mode: Robot36"
telegram: onthe_air
2025-11-23 09:16
And CW but very weak.
RS40S RS40S and then some numbers like 2400 and this repeated 3 or 4 times.
very good
like a pro
Hi!
We recently upgraded the UMKA‑1 CubeSat, enhancing its support for school educational programs, amateur radio activities, and mission‑focused operations. We are currently testing several features, including a CW beacon. The beacon is not active continuously; it can be enabled on request by amateur radio operators or for school events.
New events are also planned, which we will inform you about later.
73!
I’ve already received the CW beacon but very weak.
Could you provide us the beacon format?
Well, the current CW beacon only stores the callsign and name: RS40S UMKA1 RS40S, but it can store any information as needed.
It’s strange that your signal is weak. Maybe it was just an unfortunate moment during the satellite pass?
Wow !! Amazing
Any other interesting features besides CW?
I’m really excited to maybe one day receive CW transmissions from the satellite
![]()
The UMKA-1 satellite has begun broadcasting children’s drawings.
The broadcast is primarily a test program and uses past children’s drawings.
It is expected that the image will now be free of distortion (excluding interference from ground stations).
Transmission ends: Sunday, November 30, 16:30 UTC
Interval: every 2 minutes
Frequency: 437.625 MHz
Mode: SSTV — Robot36
- 2025-11-29 12:37UTC
- 2025-11-29 12:39UTC
- 2025-11-29 12:41UTC
- 2025-11-29 12:43UTC
- 2025-11-29 12:45UTC
UmKA-1 over Brazil
!!
No distortions in the images I received @ra3ppy ![]()
UmKA-1 over Brazil
Many images received, but several were duplicates… @ra3ppy Are there plans to upgrade the UmKA-1 to include a randomly alternating images transmission ? (I believe this would be possible
)
On the pass at 19:3x were several images in jpg.
UMK_8.jpg decodes with Satellites decoder v0.2.13 to this:























