ArcticSat-1 (RS74S) Transmissions

pu4elt · June 28, 2025, 12:39am

ArcticSat satellite starts transmitting SSTV images in honor of the “White June” festival - a multi-format city festival, the program of which unites many cultural areas!

Frequency: 435.890 MHz (ArcticSat-1, RS74S)
Broadcasting territory: worldwide
Protocol: SSTV Robot 36
Broadcast start: June 27, 2025 21:00 UTC - has already begun!
Scheduled end of broadcast: June 28, 2025 21:00 UTC
Only 1 image, 150 second interval
Transmission may be interrupted without prior notice (due to temperature increase, battery discharge, etc.)

pu4elt · June 28, 2025, 12:42am

2025-06-27 23:00UTC

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ArcticSat-1 over Brazil !!

jomjom79 · June 28, 2025, 7:49am

07:45UTC

Jomjom79

2e0gkw · June 28, 2025, 6:03pm

Got the same image 3 times a few minutes earlier (0740+) over the uk.

dl7ndr · June 29, 2025, 9:18am

Me too.

2025-06-28 07:42

dl7ndr · July 8, 2025, 4:35pm

Got my QSL card.

2e0gkw · July 8, 2025, 9:14pm

Yes, mine arrived this afternoon too. Thanks to the team for the activation and qsl.

pu4elt · August 10, 2025, 11:32pm

The ArcticSat-1 (RS74S) is transmitting only one image in SSTV RB-36 in worldwide. From what I can tell, the transmission interval is approximately 3 minutes.

Freq: 435.890 MHz

There is no specific date for the end of transmissions.

2025-08-10 23:12UTC

202508102312320×240 31.3 KB
2025-08-10 23:15UTC

202508102315320×240 39.7 KB

ArcticSat-1 over Brazil !!

Note: The transmission lasts a little longer than standard transmissions in Robot-36 and this causes my decoding software to start a second image.

See below the original image in a higher resolution :

2e0gkw · August 11, 2025, 8:17am

@pu4elt Thanks for heads-up Managed to catch this on the 075xUTC pass over UK.

ArcticSat-1 (RS74S) 11-Aug-25 0754UTC

dl7ndr · August 11, 2025, 8:47pm

2025-08-11 20:45

ahans · August 13, 2025, 7:10am

250813_06.45UTC_ArcticSat1(RS74S) approx. 10° height.

pu4elt · August 18, 2025, 1:05pm

A new image is being transmitted by the ArcticSat-1 (RS74S) !!

Transmission interval is approximately 5 minutes.

2025-08-18 12:39UTC

202508181239320×240 44.3 KB

ArcticSat-1 over Brazil !!

This is the Octo-Pax (a 3D-printed octopus) inside ArcticSat-1 in orbit.

See below the same image transmitted in SSTV, but in a higher resolution

2e0gkw · August 19, 2025, 8:16am

@pu4elt Thanks again for heads-up on this new image. Managed to grab it on the 073xUTC pass over UK. A little more noise that your capture but with the 5min gap between transmission only got the one shot at reception.

ArcticSat-1 (RS74S) 0740Z 19-Aug-25