ISRO: PSLV-C62 / EOS-N1 Mission - 2026-01-12 04:48 UTC

[K4KDR]

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last update: 2026-01-12 04:00 UTC

Temporary NORAD ID	Satellite	Frequency	Notes	Deployed
UHF
98409	MUNAL	401.375 MHz	GFSK 4800.0	-
AMATEUR UHF
98411	CGUSAT-1	435.360 MHz	CW	-
98412	DSAT-1	435.360 MHz	CW	-
98413	LACHIT-1	435.360 MHz	CW	-
98411	CGUSAT-1	436.175 MHz	FSK 9600.0	-
98412	DSAT-1	436.175 MHz	FSK 9600.0	-
98413	LACHIT-1	436.175 MHz	FSK 9600.0	-
S-Band
98410	THEOS 2A	2236.666 MHz	FM	-

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Initial post:
Looks like we have a ride-share mission from ISRO scheduled for 12-Jan-2026.

From their Media Brief (https://www.isro.gov.in/media_isro/pdf/PSLVC62/PSLV_C62_Brochure080126.pdf), here are the sats that we can hope to see downlinks from:

… there are some very interesting sites that appear to be related to some of these satellites (or previous members of the same family)…

Polar Access - 1 Mission - Control Center

GitHub - thybolt4hams/gr-thybolt

Thybolt Mission for HAMS | Dhruva Space

[K4KDR]

And the Launch LiveStream URL:

PSLV-C62 / EOS-N1 Mission | Live Launch Coverage

[PE0SAT]

Hi Scott,

Thanks for sharing the information on this upcoming launch.
I had a quick look but couldn’t find any frequency information on the satellites in the list.

Only Thybolt 1/2 are launched earlier and where also IARU coordinated.
Did you already find some frequency details ?

Nasa Space Flight Forum launch information.

Jan | PE0SAT

[K4KDR]

Not yet - but I certainly plan to start the usual searches!

[pu4elt]

I am familiar with the Brazilian satellites, which are:

• EduSat-1
• UaiSat (Satellite for my state )
• Galaxy Explorer
• Orbital Temple
• Aldebaran-1

From what I know ALL Brazilian satellites should transmit at 468.5MHz (I know that UaiSat and Aldebaran should transmit in LoRA). Both are on the TinyGS network

For UaiSat:

Spreading Factor = SF11
Coding Rate = 4/5
Sync Word = 0x12
Preamble Length = 8 symbols
CRC = Enabled

For Aldebaran-1:

Spreading Factor = SF09
Coding Rate = 4/5
Sync Word = 0x12
Preamble Length = 8 symbols
CRC = Enabled

Edit: Please note that HERE we have information about Aldebaran-1 radio, however, as far as I know, this information is outdated.

[K4KDR]

Here are the ‘easy’ payloads that are in ITU, SatNogs, tinyGS, etc:

-Theos-2 (58016 ??) 2244.230

-CGUSAT IARU Sat Coordinator
a telemetry and data downlink on 436.175 MHz and for the beacon on 435.360 MHz have been coordinated

Polar Access - 1 Mission - Control Center

-Sanskarsat ITU lists 70cm (435 - 438), but not specific freq

-Uaisat
Mode LoRa
Frequency 468.5 MHz
Bandwidth 250 kHz
Spreading Factor SF11
Coding Rate 4/5
Sync Word 0x12
Power 5 dBm
Preamble Length 8 symbols
CRC Enabled

-Aldebaran-1
Mode LoRa
Frequency 468.5 MHz
Bandwidth 250 kHz
Spreading Factor SF9
Coding Rate 4/5
Sync Word 0x12
Power 5 dBm
Preamble Length 8 symbols
CRC Enabled

… and tinyGS lists two of the others as ‘possible LoRa’ downlinks: Orbital Temple & SanskarSat-1

[XtopheSwl]

Dear all

I have found :

CGUSAT-1 : IARU Sat Coordinator

LASHIT 1 - IARU Sat Coordinator

for DSUSat : may be : IARU Sat Coordinator

for Thybolt-3 I have found for Thybolt 1 & 2 : IARU Sat Coordinator

73’s

[PE0SAT]

Temporary NORAD ID	Satellite	Frequency	Notes	Deployed
AMATEUR UHF
-	CGUSAT-1	435.360 MHz	IARU Coordinated	Directly
-	LACHIT-1	436.175 MHz	IARU Coordinated	Directly
-	DSUSAT	-	Non IARU Coordinated	Directly
-	THYBOLT-3	-	Non IARU Coordinated	Directly
COMMERCIAL UHF
-	-	-	-	-

[jp_polito]

Brazilian satellites are within the Constellation A2S_1 registered with the ITU.

ITU Space Explorer

[jp_polito]

Here are some images of UaiSat and the mission emblem. If you need more information, don’t hesitate to ask!

[K4KDR]

Thanks for the info! Any idea how frequently those sats will be transmitting? With a 250k bandwidth, it’s going to take a long time before they drift far enough apart to be clear of each other’s downlinks.

[jp_polito]

So, each satellite has a different bandwidth; the highest is UaiSAT’s 250kHz beacon, and this standard is at 30s. I don’t remember the other three PocketQubes exactly. But each beacon is set to a different time.

[K4KDR]

Thanks! If anybody has a list of which sat has which bandwidth, please share.

That would be a very easy way to identify the downlinks whether you have any LoRa receivers or not!

[K4KDR]

Launch live-stream currently showing a start time of 0415utc.

[fredy]

TLE for satellites added in DB from suggestions (first post updated accordingly):

MUNAL
1 98409U          26012.20347222  .00000000  00000-0  50000-4 0    05
2 98409  97.5000  83.3410 0000001   0.0000 166.0420 15.20183509    06
THEOS 2A
1 98410U          26012.20347222  .00000000  00000-0  50000-4 0    07
2 98410  97.5000  83.3410 0000001   0.0000 166.0420 15.20183509    08
CGUSAT-1
1 98411U          26012.20347222  .00000000  00000-0  50000-4 0    08
2 98411  97.5000  83.3410 0000001   0.0000 166.0420 15.20183509    09
DSAT-1
1 98412U          26012.20347222  .00000000  00000-0  50000-4 0    09
2 98412  97.5000  83.3410 0000001   0.0000 166.0420 15.20183509    00
LACHIT-1
1 98413U          26012.20347222  .00000000  00000-0  50000-4 0    00
2 98413  97.5000  83.3410 0000001   0.0000 166.0420 15.20183509    01

[bali]

for archieve:

[fredy]

It seems that something went wrong and there is an issue on flight path. Not sure from the announcement if the satellites were successful deployed.

[fredy]

In the live stream around 4:57 UTC time where it shows a view from the control room, there is a live feed from camera on the last stage(?) and shows a quick spin (earth shows up and disappears), like the last burn was done uncontrollable (my speculation).

Wondering now if the payload were deployed in the scheduled time or not, independently from the last stage status, and if yes what orbit they will follow.

Looking forward for the official announcement to find out what happened.

EDIT:
I’m going to leave the scheduled observations just in case the satellites were deployed until we have any news.

[bali]

@fredy

shows a quick spin

i record it

[bali]

@fredy

shows a quick spin (earth shows up and disappears), like the last burn was done uncontrollable (my speculation).

take down on youtube