Transporter-14 Rideshare: Vandenberg SLC-4E: 23 Jun 2025 21:18 UTC

PE0SAT · June 24, 2025, 1:04pm

Indeed TPA-1 uses Light-1 framing

For gr-satellites users, here is the yaml file.

name: TPA-1
norad: 98587
data:
  &tlm Telemetry:
    unknown
transmitters:
  2k4 FSK downlink:
    frequency: 401.900e+6
    modulation: FSK
    baudrate: 2400
    framing: Light-1
    data:
    - *tlm

***** VERBOSE PDU DEBUG PRINT ******
((transmitter . 2k4 FSK downlink))
pdu length =         93 bytes
pdu vector contents = 
0000: 01 20 00 e8 ac 02 01 00 00 b0 00 00 00 00 00 00 
0010: 00 00 00 4c 00 00 00 02 00 02 00 01 00 24 00 00 
0020: 00 fa fa fa fa fa fa fa fa fa 05 7f 7f fa fa 00 
0030: 00 80 0c 11 01 00 00 3c b4 00 00 9f 00 00 00 80 
0040: 18 85 40 60 58 3f 42 00 00 00 00 00 00 9c c1 00 
0050: 00 dc c1 00 00 c0 7f 00 80 ee c1 00 80 
************************************
***** VERBOSE PDU DEBUG PRINT ******
((transmitter . 2k4 FSK downlink))
pdu length =         91 bytes
pdu vector contents = 
0000: 01 20 00 e8 ac 02 02 8a c1 00 00 c0 7f fb 00 fb 
0010: 00 a0 87 5a 68 12 61 c3 ff 01 3d cc a1 41 d4 34 
0020: 19 c3 bd 68 fb 48 01 00 00 00 02 8c 86 08 3f 00 
0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0050: 00 00 00 00 00 00 00 00 00 00 00 
************************************
***** VERBOSE PDU DEBUG PRINT ******
((transmitter . 2k4 FSK downlink))
pdu length =         93 bytes
pdu vector contents = 
0000: 01 20 00 e8 ad 02 01 00 00 ac 00 00 00 00 00 00 
0010: 00 00 00 4b 00 00 00 01 00 02 00 02 00 24 00 00 
0020: 00 f9 f9 f9 f9 fa fa fa f9 fa 05 7f 7f f9 f9 00 
0030: 00 80 0c 11 01 00 00 b5 b4 00 00 9f 00 00 00 00 
0040: c6 84 40 90 c8 44 42 00 00 00 00 00 00 c0 c1 00 
0050: 00 e0 c1 00 00 c0 7f 00 00 d1 c1 00 80 
************************************
***** VERBOSE PDU DEBUG PRINT ******
((transmitter . 2k4 FSK downlink))
pdu length =         91 bytes
pdu vector contents = 
0000: 01 20 00 e8 ad 02 02 91 c1 00 00 c0 7f fb 00 fb 
0010: 00 19 88 5a 68 23 5c c8 ff 01 88 b0 de 41 a6 e6 
0020: 1a c3 fa ec fb 48 01 00 00 00 02 fe 86 ac 3e 00 
0030: 00 00 00 00 00 80 bf 00 00 80 bf 00 00 80 3f 00 
0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
0050: 00 00 00 00 00 00 00 00 00 00 00 
************************************

Jan | PE0SAT

PE0SAT · June 24, 2025, 1:35pm

The frequency used is 436.300 MHz, the SatNOGS transmitter is also updated.

A SatNOGS obs IQ replay places the signal 5 kHZ higher.

Jan | PE0SAT

sv2hwm · June 24, 2025, 1:48pm

BRO-18 IQ replay.

fredy · June 24, 2025, 1:56pm

Awesome work everyone!

T14 Unknown 1 is JACK-001, thanks @EU1SAT for the demodulated data!

EDIT: fixed in the next post.

Also it’s transmitter is now move at 436.305 MHz per @PE0SAT and Network’s observations.

Good job also by @sv2hwm and @PE0SAT for TPA-1 demodulation. Just to be accurate, we may need some more data to confirm it is TPA-1 but until now this is the best candidate.

fredy · June 24, 2025, 1:57pm

Oops my bad… @PE0SAT had already moved the transmitter from 436.295 MHz to 436.300 MHz, I’m changing back my wrong change.

fredy · June 24, 2025, 2:08pm

From nanosatellite.eu TPA-1 uses PLATFORM - NanoAvionics for its subsystems, similar to the Bluewalker and Light-1 that have the same framing and modulation and baudrate. So, I guess we can be 99% sure that these signals are from TPA-1.

K4KDR · June 24, 2025, 3:18pm

Oh man - I’ve not even had a pass over 25° elevation yet on the U.S. East Coast and you all have practically identified the entire deployment!

Great work, everyone!!

I guess the challenge now for those of us ‘orbitally challenged’ is to try to figure out which objects remain uncertain or silent. Maybe the SatNogs system can add a ‘10 Most Wanted’ list?

pe2bz · June 24, 2025, 5:59pm

identified as 98570 on 2256 MHz

pe2bz · June 24, 2025, 6:46pm

and the bottom signal identified as 98578 on 2255.510 MHz by the way

pe2bz · June 24, 2025, 6:55pm

And an unknown (yet)

guestimating 2245.400 center and matching 98581 and / or 98591 on either top or bottom of the signal

hoping for a bit stronger signal coming night passes

pe2bz · June 24, 2025, 7:03pm

With some help from Fredy this might match Hyperfield-1B

K4KDR · June 25, 2025, 1:22am

Since the Bochum decodes in their PARUS-T2 observation are from other transmitters on 145.825, is it correct to say that as of 0120utc on 25-June-2025 that we still don’t have any RX decodes from any of the PARUS-T2 frequencies?

(just trying to narrow the list of Transporter-14 objects to monitor)

Also, has anyone heard any speculation or Team statements as to whether they suspect a failed antenna deployment or what? (since a few very weak signals have been seen in waterfalls)

Thanks!

PE0SAT · June 25, 2025, 4:39am

Decoding JACK001 with gr-satellites.

name: JACK001
norad: 98563
data:
  &tlm Telemetry:
    telemetry: ax25
transmitters:
  9k6 FSK downlink:
    frequency: 436.300e+6
    modulation: FSK
    baudrate: 9600
    deviation: 2600
    framing: AX.25 G3RUH
    data:
    - *tlm

-> Packet from 9k6 FSK downlink
Container: 
    header = Container: 
        addresses = ListContainer: 
            Container: 
                callsign = u'6L433' (total 5)
                ssid = Container: 
                    ch = False
                    ssid = 0
                    extension = False
            Container: 
                callsign = u'DS35' (total 4)
                ssid = Container: 
                    ch = False
                    ssid = 0
                    extension = True
        control = 0x03
        pid = 0xF0
    info = b'\x84\xd2\xa1\x01JACK001\x03>u\x00\xaa\x0bq\x84\x07\x8fH\xc1\xb3\xfc\x14\x00G\xfd\xfe\x01\xde\xfe\xe7\xfe\x14\x00\x00\x00\x00\x00\x00\x00\x00$\r\x00\x84\x00\x00\x00\x00\x00\x00\xf5I>$\x0eV~\xe4e\xe3\\y)~,\x17{\xea\xabH\x0f}\xfd\xe8$H\xf9X!D\xbd\x0cn<\x1c\xab' (total 90)

Jan | PE0SAT

n5zkk · June 25, 2025, 5:11am

I have monitored RIDUSAT-1 and PARUS-T2 on VHF each pass and have heard nothing yet.

alpha_adhito · June 25, 2025, 6:19am

RIDUSAT-1 is seen transmitting beacon on 145.925 above Europe around 22.00 - 00.00 UTC that was observed by multiple station, but not heard again on my QTH pass about an hour ago.

So far I have not yet heard Parus-T2 from my QTH with manual observation.

One example:
https://network.satnogs.org/observations/11823861/

K4KDR · June 25, 2025, 7:10am

Tonight’s pass provided enough elevation for me to join the Transporter-14 club…

First a bunch of 9k6 AX.25 decodes from JACK-001 (https://x.com/scott23192/status/1937764900258132311):

… and then my first LoRa decode from FossaSat-2E21 down on 401.700 (https://x.com/scott23192/status/1937768430045921406):

sv2hwm · June 25, 2025, 1:36pm

11:27 UTC - Tentative reception and decoding of SkyBee-2, on 401.050 MHz, in GFSK 2400 bd, using UZ7HO’s Light-1 SoundModem.

dl7ndr · June 25, 2025, 1:50pm

@K4KDR , @BV2DQ
PARUS-T2
Observed the pass on 2025-06-25 13:30 UTC (max 46° elevation).
No signals on UHF, no signals on VHF and response from digipeater.

dl7ndr · June 25, 2025, 1:54pm

RIDU-Sat 1
Observed the pass on 2025-06-25 12:5x UTC (max 68° elevation).
No signals on 145.925, no signals on 145.825 and response from digipeater.

sv2hwm · June 25, 2025, 2:06pm

12:05 UTC Reception of telemetry and music from HUBBLE-6.