47.7°E Eutelsat Quantum

**satesco** · November 29, 2021 at 11:56 AM

I open this thread because Eutelsat Quantum has long passed the testing phase, when it was in "the Testposition section".

The transponders found by marval450 and stephan94 are still valid, 12370 V and 12372 V, which I confirm now.

I visited this position now, but I did not find 12105 H,1000,1/2 in my area.

**satesco** · May 7, 2022 at 9:33 PM

11893 H,61898,2/3,S2-Data,(Bryce on FS)

**hvdh** · July 2, 2022 at 12:22 AM Official Post

Now also above 12.5 GHz there are 5 peaks, unlockable for me.

I thought Quantum didn't have that band, but there is not another satellite nearby.

The strong one at 12530H has a strange constellation, probably not DVB-S.

**qwer** · July 2, 2022 at 10:07 AM Official Post

I can see them too on this position, but nothing lockable with TBS 6522, TBS 6903, TBS 6903X and TBS 6925.

**s-band** · July 2, 2022 at 10:40 AM Official Post

The group around 12530H all look like ~400kHz wide BPSK

**strannik** · July 2, 2022 at 6:03 PM Official Post

**hvdh** · July 3, 2022 at 11:36 AM Official Post

Hard to unravel what is going on here, is it DVB-S or something else?

Entering Strannik's Freq. and SR parameters on Dr.HD F16 often gives high dB readings (up to 17 dB), but never a lock.

With TBS-5927 and CrazyScan, manual entry (no blindscan) crashes CrazyScan.

**strannik** · July 4, 2022 at 2:27 PM Official Post

s-band

Thank you so much for posting the spectrum.

You opened an object for me to study low-speed transponders, which have a very high signal quality, SNR ~ 17dB, noise at the level of 0.7dB. This allows you to see and study the delicate internal structure of the transponder.

hvdh

Signal modulation is BPSK, which is defined in BlindScan as QPSK.

The difference is that the two varieties of BPSK form a cross-shaped constellation during synchronization, which precedes signal capture (lock), and QPSK, during synchronization, which precedes signal capture (lock), form a circular constellation.

DVB-S2 signal demodulators "do not see" BPSK signals

**satesco** · July 5, 2022 at 2:52 PM

At 11790 H, 132996, no other parameters were found, because the signal is weak.

Found with 6903x card.

**qwer** · July 5, 2022 at 3:04 PM Official Post

Quote from satesco

11790 H, 132996

SR: 133000 ... I must have a look on that one later with my TBS 6903X...

/edit: tried - but without success yet...

**satesco** · July 9, 2022 at 11:14 PM

Quote from satesco

At 11790 H, 132996, no other parameters were found, because the signal is weak.
Found with 6903x card.

I finally managed to lock the signal manually and see the parameters of this transponder: 11790 H,100000(132997),5/6,16apsk-Data(new)

**qwer** · July 10, 2022 at 2:19 PM Official Post

I´ve tried latest CS Version now and latest StreamReader - without success yet on 11790 H 133000 - even not in manual...

**satesco** · July 10, 2022 at 4:24 PM

qwer,

I think it's better to try manually at 11790 H, entering symbol rate 13299 (without the last digit), insisting

**qwer** · July 10, 2022 at 4:33 PM Official Post

Thanks satesco - I´ve tried all - even on changed TBS tuner...

**satesco** · July 10, 2022 at 5:55 PM

Quote from qwer

Thanks satesco - I´ve tried all - even on changed TBS tuner...

I hope, qwer, that this video tutorial will help you lock this big symbol rate

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**satesco** · July 25, 2022 at 9:22 AM

IQmonitor and Crazyscan, my scan:

**strannik** · July 25, 2022 at 8:53 PM Official Post

satesco

Please set Fstart=12520, Fstop=12545 Then expand the spectrum window so that you have df=25kHz and run an HR scan. Thanks

**stephan94** · July 26, 2022 at 1:43 PM Official Post

Hallo ,

hier sind meine Ergebnisse auf Quantum

( kleine Schwierigkeit, als ich das Spektrum speichern wollte,

nachdem ich jeden Transponder gescannt hatte: error 32?)

here are my results on Quantum

(small difficulty when I wanted to record the spectrum

after having scanned each transponder : error 32 ?)

Вот мои результаты по Квантуму

(небольшая трудность, когда я хотел записать спектр

после сканирования каждого транспондера: ошибка 32 ?)

**strannik** · July 26, 2022 at 2:32 PM Official Post

Quote

here are my results on Quantum
(small difficulty when I wanted to record the spectrum
after having scanned each transponder : error 32 ?)

I can not say anything - there is little information

However, the small (32) error number indicates that this is a common I/O system error, possibly due to an invalid character in the file or directory name.

**stephan94** · July 26, 2022 at 4:20 PM Official Post

Unfortunately this "error32" prevented me from

to memorize the table of all the frequencies found.

After more than 4500 seconds for the spectrum, it's a real shame.

I'll have to start again

К сожалению, эта "ошибка32" не позволила мне

запомнить таблицу всех найденных частот.

После более чем 4500 секунд для спектра, это действительно позор.

Мне придется начать все сначала

47.7°E Eutelsat Quantum

Thank you so much for posting the spectrum.

You opened an object for me to study low-speed transponders, which have a very high signal quality, SNR ~ 17dB, noise at the level of 0.7dB. This allows you to see and study the delicate internal structure of the transponder.

hvdh

Signal modulation is BPSK, which is defined in BlindScan as QPSK.

The difference is that the two varieties of BPSK form a cross-shaped constellation during synchronization, which precedes signal capture (lock), and QPSK, during synchronization, which precedes signal capture (lock), form a circular constellation.

DVB-S2 signal demodulators "do not see" BPSK signals

Please set Fstart=12520, Fstop=12545 Then expand the spectrum window so that you have df=25kHz and run an HR scan. Thanks

Participate now!

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47.7°E Eutelsat Quantum