Thanks for the information, the yaml is updated as is the output shared.
Now we only need an active satellite over Europe.
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In the continuing search for HERMES-H1/H2, I had a very low pass over the Eastern U.S. this morning (27-Mar) but nothing seen from H2.
When the tracking indicated that H1 should have been overhead, signals appeared with almost a perfect match to the expected doppler:
… however, much to my disappointment they did not decode. Taking a closer look in Inspectrum, the appearance of these packets was different from the confirmed H2 packets observed yesterday. Instead of a 2-packet burst, these signals were one longer transmission. Additionally, the best estimate for a baud rate in inspectrum was something in the area of 19k9. So, likely from a different satellite. Will keep looking!
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Hi Scott,
To give you an idea of all the satellites using 401.500 MHz, this obs is made during a perfect overhead pass.
TLE observation:
Multiple wide signals being received, but no unidentified.
I will also keep looking for HERMES
Jan | PE0SAT
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Thanks @K4KDR and @PE0SAT for your precious contributions!
Taking a closer look in Inspectrum, the appearance of these packets was different from the confirmed H2 packets observed yesterday.
I confirm that the appearance seems not compatible with the HERMES beacon. We transmit a PRN noise for something like 200-300 ms then the telemetry data is modulated. This is quite clear from yesterday signal.
Francesco from HERMES team
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In the latest Network’s observations I see a lot of signals from YAM-5 satellite at that frequency, so it could be it.
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Dear All,
Hope you are fine.
Try this TLE for Uvsq-Sat NG… 26 March 2025
1 88353U 25 85.85876334 +.00012157 +00000+0 +12101-2 0 0023
2 88353 97.7346 340.8027 0001573 294.6796 65.4259 14.9177380700185
F4IXO & the Uvsq-Sat NG team
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1 88353U 25 85.85876334 +.00012157 +00000+0 +12101-2 0 0023
2 88353 97.7346 340.8027 0001573 294.6796 65.4259 14.9177380700185
A new one … Thank you to follow us.
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Dear all,
Thank you for helping tracking the JINJUSat-1B.
I’d like to update JINJUSat-1B’s TLE data with SatNOGs ID#.
JINJUSat-1B
1 98650U 14900A 25086.00000000 .00026984 00000-0 13176-2 0 00004
2 98650 097.4517 341.1470 0003512 194.1554 222.0856 15.18236133001937
I hope this data is helpful.
Best regards,
Hongju So
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Changed to use the temporary NORAD ID:
UVSQ-SAT-NG
1 98638U 25085.85876334 +.00012157 +00000+0 +12101-2 0 00238
2 98638 97.7346 340.8027 0001573 294.6796 65.4259 14.91773807001857
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Updated TLE for Buccaneer MM:
Buccaneer MM
1 98648U 00000A 25087.41588569 .00000000 00000-0 29838-3 0 09
2 98648 97.7394 342.3007 0006083 17.6570 40.8124 14.91287974 09
buc_087_v1.dat (2.9 KB)
sites.txt (10.5 KB)
Hello @K4KDR, thank you again for your precious help!
We are still trying to contact our H1 and H2, hoping to tell you more in the next hours! Can we kindly ask you if it is possible for you to retrive the exact UTC time when the first H2 beacon arrived?
Thank you so much for the help!
Andrea B from HERMES team
ION SCV-017 TLE Update
ION SCV-017
1 98635U 25052X 25087.46043715 .00000000 00000-0 79995-3 0 02
2 98635 97.4434 342.5640 0004588 342.2991 68.6516 15.16742059 05
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Good afternoon,
Last night 27-03-2025 22:35:00 UTC I had a perfect overhead pass and recorded the whole 15 minutes.
I am very sorry to say but there where no signals received that could be an indication of H1 or H2.
Start:
End:
Frequency range monitored was 401.35e6 - 401.65e6
There was a signal close to 401.5e6, but that doesn’t seems to be wide enough
I have if you want a PCM 16 IQ recording from this pass.
Input File : 'iq_401500000Hz_312500_27-03-2025T22:35:12.wav'
Channels : 2
Sample Rate : 312500
Precision : 16-bit
Duration : 00:15:44.29 = 295090176 samples ~ 70821.6 CDDA sectors
File Size : 1.18G
Bit Rate : 10.0M
Sample Encoding: 16-bit Signed Integer PCM
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Hi!
HERMES TLE Update
To increase the chances of getting better observation data, we’ve computed new TLEs for HERMES (H1) and HERMES (H2) with the latest info we got after deployment:
HERMES (H1)
1 98615U 25000A 25083.29468752 +.00000000 000000+0 +43131-3 0 00015
2 98615 097.4406 338.4605 0007185 329.8647 030.3111 15.15668850000015
HERMES (H2)
1 98614U 25000B 25084.28431715 +.00000000 000000+0 +39387-3 0 00011
2 98614 097.4423 339.4312 0004771 231.1920 128.9522 15.17692543000014
Thank you!
Davide from the HERMES Team
2 Likes
Updated TLE for OTP-2:
OTP-2
1 98652U 25087.65900457 .00000000 00000-0 29648-3 0 03
2 98652 97.4377 342.7749 0005879 319.2026 83.6603 15.16719036 02
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Hi !
'will try these new TLE this evening !
I’m seeking H1 and H2 for a few days, but without success so far…
To be honest, our stations with directional antennas are not the most suitable for this type of search (especially when the band is so crowded).
This is probably why K4KDR, which I guess uses an omnidirectional antenna, has been more successful.
I made a gnuradio graph that allowed me to demodulate the K4KDR recording signals very easily. So I hope to be ready to identify your birds properly!
I made a TLE file that lists the satellites that use the same frequency as you.
I can’t upload it, as i’m a new user, but feel free to ask by DM.
Yannick - F4HDA
4 Likes
Updated TLE for M-SEL/CORTEZ:
M-SEL/CORTEZ
1 98622U 00000A 25087.39431296 .00000000 00000-0 16109-4 0 00
2 98622 97.7394 342.2369 0002339 101.2000 314.6347 15.17358051 02
The stronger of the two downlinks… the one that decoded the 2 frames provided previously, was at 0400utc on 26-Mar. (the timestamp in the screen shot below is a 4-hour offset as that computer was set to Eastern Daylight Time)
… also visible in the waterfall is a weaker downlink about 30 seconds (estimate) before the one that decoded.
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Updated TLE for Sphinx/Frazier:
Sphinx/Frazier
1 98621U 25052S 25087.34920099 .00000000 00000-0 34094-3 0 04
2 98621 97.4477 342.1596 0002900 328.4921 196.0058 15.16818920 06
Which also agrees with the one observed in this observtions:
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