Soyuz-2.1b/Fregat - Ionosfera-M 3&4 - Vostochny - 25 July 2025 (05:54 UTC)

Satellites & Observations Launches
81

Thank you so much for the reply!

Clearly there are IoT/LoRaWAN downlinks being transmitted from some object (or objects) that were deployed from this launch, so we will have to just continue monitoring to determine the source(s).

We have over 100 decodes in the tinyGS database now that ground stations are listening for this signal world-wide. That should make it easier to correlate to one or more satellites.

Screenshot from 2025-08-05 04-50-33
Screenshot from 2025-08-05 04-50-33427×339 21.7 KB

Thanks again for the assist! As always, this will get easier as the spacecraft from this deployment spread out.

-Scott, K4KDR

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82

Hi Scott,

From a couple of days ago, GEOSCAN-4 and also a LoRA signal at the same/similar freq from a different object.

image
image966×718 50.1 KB

Jan | PE0SAT

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83

Looking at the identification table. This object may be one of the Astroline satellites or Nahid 2. Currently they have random object given to them in tinygs

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84

Info from tinygs

Satellite Name Mode Bandwidth Frequency Possible NORAD
Astroline-1 LoRa 125 kHz 436.865 MHz ?
Astroline-2 LoRa 125 kHz 436.365 MHz ?
Astroline-3 LoRa 125 kHz 435.865 MHz ?
Astroline-4 LoRa 125 kHz 435.365 MHz ?
CSTP-4.1 LoRa 62.5 kHz 436.734 MHz 64888
CSTP-4.2 LoRa 62.5 kHz 436.162 MHz 64887
CSTP-4.3 LoRa 62.5 kHz 436.162 MHz 64886
CSTP-4.4 LoRa 62.5 kHz 437.326 MHZ 64889
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NORAD identification Satellite Name Possible satellites based on the tinygs and deployment schedule
64876 IONOSFERA-M 3
64877 IONOSFERA-M 4
64878 INNOSAT 16 (RS92S7)
64879 GEOSCAN 6 (RS92S6)
64880 GEOSCAN 1 (RS92S1)
64881 239ALFEROV (RS61S)
64882 OBJECT G Astroline-N
64883 OBJECT H Astroline-N
64884 OBJECT J Astroline-N
64885 OBJECT K Astroline-N
64886 OBJECT L CSTP-4.3
64887 OBJECT M CSTP-4.2
64888 OBJECT N CSTP-4.1
64889 OBJECT P CSTP-4.4
64890 GEOSCAN 2 (RS92S2)
64891 GEOSCAN-5 (RS92S5)
64892 GEOSCAN-4 (RS92S4)
64893 GEOSCAN 3 (RS92S3)
64894 INNOSAT 3 (RS92S0)
64895 OBJECT V Nahid-2
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86

Frequency corrections

Satellite Actual Frequency
239Alferov 436.2723
GEOSCAN-1 435.9735
GEOSCAN-2 436.163
GEOSCAN-3 435.7423
GEOSCAN-4 435.3385
GEOSCAN-5 436.6632
GEOSCAN-6 436.9389
InnoSat3 436.4373
InnoSat16 435.8265
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