Intelsat 35e 34.5 w

[william-1]

2 new transponders @ 34.5 west either test carriers or new data streams maybe from Intel 35e ?

 

[william-1]

11023 H 5000 2/3 DVB-S2 8PSK data stream
11468 H 14974 5/6 DVB-S data stream

Been active for 3 days now.

 

[s-band]

@satesco I see the same as your post on 36W but got totally confused as to which of the 34.5 sats is which. My scans:




The signal at 11136H is 16QAM


The pair at the top of H & V consist of one data and one that appears to be a wide band FM signal at 20Hz. The data on V will not lock.
The upper traces are max. held to show extent of the FM signal. I guess that the FM is a test signal.


11657H above, 11657V below


and this is what the modulation looks like when slope detected (i.e.FM)

 

[satesco]

Hi @s-band,
Forgive me as I posted on the topic 36W and in a way I misled you.But I realized later that the signal found was from 34.5 W.Indeed your spectrometer correctly shows the signal from this position,including 11136 V,which is the same as my constellation of 16 qam.
Your device sees better modulated signal,but unfortunately not with ours crazyscan.Maybe my lnb skew need to be adjusted because I have a signal on both polarities at 11669 H/V.I see that on your analyzer because you have signal on both polarities at 11013 HV, just like me. And no wonder, if we compare the signal,which is pretty much the same,as level/quality,with all that we are in two different areas. Now I can not make adjustments to lnb to check if polarities are well separated.Luckily you have a device which highlight the better signal on both polarities.We'll see later when it will be activate the other transponders on this satellite.
Here's the signal that I'm picking up from this position.
Regards

 

[s-band]

Hi @satesco , I have looked again and I now don't think it is FM. It is hard to tell as it is too wide for the analyser but it seems more like amplitude modulation of the data, maybe from the other polarisation? The amplitude variations are quite close to a sine wave at 20Hz. The total bandwidths of the 20Hz signals are similar to those of the data sigs on the opposite polarisation. It' almost like something is weird with the satellite unless it is a test mode. Looking at your Crazyscan plots, the 20Hz signals show up as spikes and I see that here.

I get about 20-22dB cross polar rejection and your system looks similar from the levels at 11075 on you CS scan. The signal centred on 11670H is about 11dB higher than the 20Hz signal in 11670V so that suggests it is not related to x polar problems on receive.

I wonder if @Feedsat_DXer has any ideas?

 

[Anonymous_1]

I am not able to check this at the moment.
I ll be Back to you asap if "necessary"

 

[Anonymous_1]

My 34.5°W BS

 

[s-band]

Thanks @Feedsat_DXer . You are seeing the 20Hz things as spikes as well. I still can not work out what is going on around 11665MHz. Do you have any thoughts or know someone who might?

 

[Anonymous_1]

Just checked

In my opinion, just a slot of transponder #68 which is open but empty.

but I m not an expert...

 

[Llew]

Yes, in real time, random amplitude bursts. Maybe they can extract information from it if that's its purpose

 

[Archive-8]

Yes, random amplitude bursts. Maybe they can extract information from it if that's its purpose

The video has the privacy set to private.

 

[Llew]

OK, try that.

 

[s-band]

Yes, random amplitude bursts. Maybe they can extract information from it if that's its purpose

If you change the sweep speed, you should see the modulation more clearly and if you can set your analyser to zero span with a wide bandwidth, triggered on video, you'll see the 20Hz. It looks random as the sweep is not locked to the modulation. The amplitude mod is a reasonable 20Hz sine wave. This plot shows it triggered on AM demodulated video https://www.satellites.co.uk/forums/attachments/34-5w_11665_slope-demod_h-gif.109789/
To me, it looks like the signal from the opposite polarisation is modulated by 20Hz AM. That applies to both pairs.

Just checked

In my opinion, just a slot of transponder #68 which is open but empty.

but I m not an expert...

View attachment 109829

This looks the same thing but a slower sweep speed. The waterfall shows that the AM is not locked to the sweep.

I wonder if there is something going on that is allowing signals from one polarisation to get to the opposite but modulated? Perhaps a problem with the switching matrix? or some diagnostics, as you suggest, Llew?

 

[Llew]

If you change the sweep speed, you should see the modulation more clearly and if you can set your analyser to zero span with a wide bandwidth, triggered on video, you'll see the 20Hz. It looks random as the sweep is not locked to the modulation. The amplitude mod is a reasonable 20Hz sine wave. This plot shows it triggered on AM demodulated video https://www.satellites.co.uk/forums/attachments/34-5w_11665_slope-demod_h-gif.109789/
To me, it looks like the signal from the opposite polarisation is modulated by 20Hz AM. That applies to both pairs.

Thanks s-band. If I change the sweep speed (1o MHz limit with the Promax) I have the trio of amplitude bursts. Your traces much clearer than anything I can view with the setup I have.
A stronger signal from 34.5W would be welcome.

 

[Anonymous_1]

must be deleted.
Oooppps

 

[Analoguesat]

Ive split the reception reports from the launch thread into a more suitable home.

 

[pontiend]

I receive four transponders from this satellite. Scan range 11000-11700H .
I have set it at 34.6 for scanning purposes.
TBS6983 100cm Dish.

 

[hvdh]

Note that Intelsat 903 left 34.5°W on 17 Sep 2017. So now it's only Intelsat 35e from this position.

Intelsat 903 should arrive at 31.5°W end of September.

 

[satesco]

11160 H,45000,3/4,Dvb-S2/32APSK,ACM,Multi254-new GS,
11560 H,21544,3/4,Dvb-S2/32APSK,ACM,Single-new GS,

 

[william-1]

Message from Intelsat:-
Intelsat 903 moved to 325.5° E/ 31.5°W
Status: Station Kept

No active transponders found in the active transponders for 903.

Upcoming Satellite Launches | Intelsat

Real time satellite tracking for: INTELSAT 903