April 10 — 14, 2026: SSTV Image Transmission Planned from SAKHACUBE-CHOLBON (RS18S) CubeSat
From April 10 (12:00 UTC) to April 14 (11:59 UTC), 2026, SAKHACUBE-CHOLBON (RS18S) CubeSat will be transmitting images via SSTV mode. The event commemorates the International Day of Human Space Flight on April 12.
Event Schedule:
Active Broadcasting: 2026-04-10 12:00 UTC — 2026-04-11 11:59 UTC
Maintenance: 2026-04-11 12:00 UTC — 2026-04-11 23:59 UTC
Active Broadcasting: 2026-04-12 00:00 UTC — 2026-04-12 23:59 UTC
Maintenance: 2026-04-13 00:00 UTC — 2026-04-13 11:59 UTC
Active Broadcasting: 2026-04-13 12:00 UTC — 2026-04-14 11:59 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.).
Hi, most of the eQSL cards were sent out on Apr.2, some cards are delayed due to email issues. We will try to send the rest soon. As for the paper cards, unfortunately I cannot give a certain date, the logistics in Yakutsk is a bit complicated. We are still planning to mail them, so stay tuned!
Mailbox-mode (or “store-and-forward”) message relay is in development. We have had issues with the onboard UHF transceiver which severely impact the uplink budget (in other words, the spacecraft is “deaf”), so we are not sure how to proceed. In any case, custom software and modems are necessary, as we are using SPUTNIX’s implementation of AX.25/G3RUH; we will publish everything in advance.
2 images heard during 1029+UTC over SE London but no / very poor decode. Should spend more time visiting my sister in NW England - seem to get much better / clearer signals there
April 25 — 27, 2026: SSTV Image Transmission Planned from SAKHACUBE-CHOLBON (RS18S) CubeSat
From April 25 (12:00 UTC) to April 27 (23:59 UTC), 2026, SAKHACUBE-CHOLBON (RS18S) CubeSat will be transmitting images via SSTV mode. The event commemorates the Sakha Republic Day on April 27.
Event Schedule:
Active Broadcasting: 2026-04-25 12:00 UTC — 2026-04-26 12:00 UTC
Maintenance: 2026-04-26 12:00 UTC — 2026-04-27 00:00 UTC
Active Broadcasting: 2026-04-27 00:00 UTC — 2026-04-27 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.). Please visit the event page at https://qsl.yksa.space/events/sstv-sakha-republic-day-17/ for an up-to-date schedule.
QSL Cards: to request a QSL card for this event, please fill in the form at https://qsl.yksa.space/qsl/submit/. Choose “SSTV: Sakha Republic Day 2026” in the Event field. Paper cards are available for receiving 3 and more images. For general QSL program information, please visit https://qsl.yksa.space/qsl/programs/.
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