UMKA-1 telescope satellite mission

for archieve:

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"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

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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.

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very good

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like a pro

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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!

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I’ve already received the CW beacon but very weak.

Could you provide us the beacon format?

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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?

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CW beacon received yesterday, Nov 25, at 19:24 UTC

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Wow !! Amazing

Any other interesting features besides CW?

I’m really excited to maybe one day receive CW transmissions from the satellite :grin: :grin:

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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

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UmKA-1 over Brazil :brazil: !!

No distortions in the images I received @ra3ppy :grin:

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2025-11-29 19:55 - 20:01

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… and one from me on the same 195xUTC pass.

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UmKA-1 over Brazil :brazil: on 2025-11-30 !! Images received at night and north of my QTH with a srtong ionospheric scintillation (For reference, in Brazil we are at -03UTC).

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 :grin:)

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On the pass at 19:3x were several images in jpg.

UMK_8.jpg decodes with Satellites decoder v0.2.13 to this:

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