SakhaCube-Cholbon (RS18S) Transmissions

2026.02.18. Loc:JN87ng Telemetry heard.

Can you translate? (It’s an image file so I can’t copy/paste into Google Translate! Is it announcing SSTV transmissions between 21-23 February? Thanks!

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The following is the English translation:

After some discussion, we decided to reschedule the next SSTV broadcast from RS18S to the weekend, February 21st - February 23rd at 0900 UTC (48 hours straight), there will be no broadcasts on February 17th - February 18th at 0900. We will try to launch the entire set of 8 postcards.

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Thanks! - and excellent news for me because I was travelling on 17/18th and so couldn’t install my yagi. But I just installed it at my new QTH in Siem Reap, Cambodia :slight_smile:

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Please note that Google translates images also.

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Update: SAKHACUBE-CHOLBON will broadcast SSTV from 21 Feb, 09:00 UTC until 23 Feb, 09:00 UTC. After this final broadcast, we will begin processing QSL card requests.
We have received more than 100 reports at amsat@yksa.space, thank you all for the enthusiastic participation!

Any image quality is acceptable, as long as the “RS18S” callsign is visible, to qualify for a QSL card.
Regarding physical cards, we are still working out some logistical issues and currently expect to begin mailing them by the end of April.

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2026-02-21 09:4x UTC
no SSTV

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Working in sisters garden so not decoded recording yet but sounded good sstv on 1116 utc pass over nw UK.

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The satellite is rotating slowly. In the first image, I tried to make polarization corrections, and in the second image, I left the antenna fixed.

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2026-02-22 11:02

2026-02-22 11:05

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Passed over PN27 at 1345 UTC
Use the N76 handheld radio for direct TNC decoding
There are decoding errors, but the quality is extremely high.

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Man, I can’t imagine how you did that. Last nights pass wouldnxt decode into a single image… more like someone took a picture and ripped it into strips!

Today was better… ill post later once I get the strips reconstructed!

C

Here you go: Feb 22, ~0140 UTC from my QTH in FM14


and

Then this morning ~1545 UTC:

I figure it was turning on a different axis this morning, relative to my antenna. Shrug. Still, loads of fun. Thanks!

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I managed a broken image from my new QTH in Cambodia, but it’s good enough to get the e-qsl…

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This was my final result from the first SakhaCube-Cholbon (RS18S) event.

What a cool satellite :star_struck: :star_struck:

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Very nice!

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March 07 — 09, 2026: SSTV Image Transmission Planned from SAKHACUBE-CHOLBON (RS18S) CubeSat

From March 07 (12:00 UTC) to March 09 (23:59 UTC), 2026, SAKHACUBE-CHOLBON (RS18S) CubeSat will be transmitting images via SSTV mode.

Event Schedule:

  • Active Broadcasting: 2026-03-07 12:00 UTC — 2026-03-08 11:59 UTC

  • Maintenance: 2026-03-08 12:00 UTC — 2026-03-08 23:59 UTC

  • Active Broadcasting: 2026-03-09 00:00 UTC — 2026-03-09 23:59 UTC

Interval between image transmissions is 180 seconds, Robot36 mode. The schedule may be adjusted depending on the satellite performance (energy balance, transceiver temperature, etc.).

QSL Cards: To confirm reception and request a QSL card, please send your reports to amsat@yksa.space. Please follow the provided submission format.

Email Subject: SAKHACUBE-CHOLBON 07-09 MAR SSTV QSL Request (Your Callsign or Full Name)

Report Form:

  1. Full Name and Callsign (if applicable)

  2. Time of Reception (UTC)

  3. Location (QTH or City/Country)

  4. Mode (SSTV/Telemetry) and optional details on the rig and software

  5. Decoded images (as attachments)

  6. Preferred QSL Card Language (Russian or English)

  7. Paper Card Request: Indicate if you wish to receive a paper QSL card (available for those who have received 2 or more unique images).

  8. Mailing Address: Required only if a paper QSL card is requested.

A note regarding the previous SSTV event: we are still processing eQSL submissions and aim to send the whole batch by the end of this week (08.03).

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RS18S over Brazil

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