NG-23 / SilverSat

[K4KDR]

Greetings! OE6ISP brought to my attention that the recent NG-23 mission to the ISS included ‘SilverSat’ for later deployment.

Looks to be a 9600 baud downlink on 437.175.

IARU Sat Coordinator

https://x.com/silversatorg

Mission Status – SilverSat

[K4KDR]

Speaking of NG-23, has this happened before?

[fredy]

Thanks for the info, I’ve created a DB entry SatNOGS DB - SilverSat

Let’s keep watching for its deployment time.

[fredy]

Doing a quick search mostly in this SpaceX F9 : Cygnus NG-23 : Florida : 14 September 2025 (22:11 UTC) thread. It seems that on the same launch there are satellite from ELaNa 58, RHOK-SAT and EagleSat-2.

Additionally it seems that ContentCube was also launched. Probably there are a couple more satellites that we don’t know. Maybe we found out more in future Voyager space(old Nanoracks) announcement.

[davecopela]

Our estimated deployment is now Dec 1.

[K4KDR]

Thanks for the update!

[bali]

hi @davecopela any update about tx schedule event for silversat? ssdv?

[dl7ndr]

SSDV transmission schedule:
1/12 19:06:00
1/12 23:38:00
1/14 22:06:00
1/15 22:30:00
1/16 18:40:00

from x.com/SilverSatorg

QSL cards

[K4KDR]

Great news! Assuming those are UTC times, here are the corresponding positions (time in upper-left)

[alpha_adhito]

Possible SSDV transmission from SilverSat?

[PE0SAT]

Obs https://network.satnogs.org/observations/13186133/ WP2D GW SHLI

Jan | PE0SAT

[dl7ndr]

I’ve receive and recorded about 300 packets 5 minutes long starting from 19:06 UTC.
I then adapted silversat_realtime.grc to the below version to work with my recorded wav file.

After 5 minutes of processing, I got this 42.5 KB binary file: silversat_realtime_outputfile.bin(remove.zip).zip (42.5 KB)

At last I processed this file using ssdv with ./ssdv -d -l 195 silversat_realtime_outputfile.bin output.jpg

The output was:

Callsign: WP2XGW
Image ID: 16
Resolution: 320x240
MCU blocks: 300
Sampling factor: 2x2
Quality level: 4
Gap detected between packets -1 and 3
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 5

And so on

Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 0
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.
Packets are not in order. 5 > 0
Packets are not in order. 5 > 1
Packets are not in order. 5 > 2
Packets are not in order. 5 > 3
Packets are not in order. 5 > 4
Packets are not in order. 5 > 5
Unexpected MCU ID in packet 6.

Read 223 packets

This is the output.jpg

[K4KDR]

Great job! Obviously we don’t have the frames to render an entire image, but the ability of SSDV to give us partial pics sure is better than a JPG where you get zero if a single frame is missed!

[bali]

@dl7ndr

I’ve receive and recorded about 300 packets 5 minutes long starting from 19:06 UTC.

can you share the iq file here? thanks

[K4KDR]

Could you please share the .GRC file shown in the picture? Thanks!

[bali]

@dl7ndr

I then adapted silversat_realtime.grc to the below version to work with my recorded wav file

can you decode using recorded audio from this obs

[K4KDR]

Thank you - downloaded the linked file but it bears little resemblance to his working solution pictured, so I didn’t even know where to begin.

[K4KDR]

Do we know the framing of SilverSat’s 9k6 downlink?

[HS318]

the CW beacon is strong SatNOGS Network - Observation 13186540

[N6RFM]

Very nice job. Please clarify, how did you prepare the input wav file? For example, is it 48K audio after FM demodulation? TKS