SSTV weekend

[S57NML]

Za ljubitelje SSTV:

ISS, SAKHACUBE-CHOLBON (RS18S) CubeSat, UMKA-1, MONITOR-3 (RS58S)

ARISS Plans SSTV Event for April

ARISS is planning for a 70cm (437 MHz) event for the week of April 12, 2026.

The ARISS teams are preparing a new series of SSTV transmissions for the event. The SSTV Series 31 images will pay tribute to Cosmonautics Day, the 100th anniversary of liquid-fueled rockets, the inaugural Space Shuttle launch and SuitSat.


SSTV transmission from MONITOR-3 (RS58S) celebrating Cosmonautics day 2026
• Tx start: April 10, 2026 at ~00:00 UTC.
• Tx end: April 13, 2026 at ~ 19:00 UTC.
• Format: Robot36.
• Interval: 120 s

UMKA-1 (RS40S)
On April 10, at 17:17UTC, the school orbital telescope will begin broadcasting a series of nine images in SSTV format, featuring the winners of the “Let’s Go!” science and education project competition.

Interval: 150 seconds
SSTV mode: Robot-36
Frequency: 437.625 MHz

April 12 – Several more orbital postcards are planned. The total broadcast series will be 12 images."

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.).

Details on SAKHACUBE-CHOLBON (RS18S) satellite:

Frequency: 437.350 MHz

Modes: GMSK 2k4 USP FEC, GMSK 9k6 USP FEC, SSTV Robot36

Callsign: RS18S

NORAD SATCAT ID: 67290

SatNOGS / sonik.space ID: CPWN-2484-4785-1722-0154

IARU Coordination completed on August 25, 2025

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 10-14 APR SSTV QSL Request (Your Callsign or Full Name)

Report Form:

Full Name and Callsign (if applicable)

Time of Reception (UTC)

Location (QTH or City/Country)

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

Decoded images (as attachments)

Preferred QSL Card Language (Russian or English)

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

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