East Beam of Atlantic Bird 2 @ 8 West,any signal?&stbs that handel low simbolrates?

[Turok]

Hello!
good evening!
just i recognize,browsing in the lyngsat list
that on atlantic bird 2 8 west,there are 2 channels with east beam!

**tp://www.lyngsat.com/ab2.html

gulfsat package


11554 v and 11595 v,with standart symbolarates!

currencly i have no signal with 1,25 m gregory and bad weather,so i just found this transponders,and i want to know,how is signal in difrent areas!


the last transponder,is a beligian mux,with very low simbolrate 12748 H 1097 2/3

currencly no lock with dm 800,i want to make a list,of today current stbs,that support,and does not support low symbolrates,the old dbox 1 does this job very well,but many new reveivers does not do it,my homecast for example,finds signal,after around 10 secounds,the i see the signal strenth very short,but it shows no signal,the response,of the tuner ist to slow,now i want to know,is ths problem,hardware or sofware "based"

dont find and receiver forum for this question,the general receiver forum,is only portuguese what i dont understand!
there are many old receivers,that we have in the forum,for discus,but no one writes on them,many topics,because ther out of the market long time ago,what the administartors,think about to upgrade this section,with current models stbs,there are so many new brands coming to the market,maybe i new universal receiver section,and deleting some old,would be look good i think!
what,the chief,from the board think about my idea?)

 

[canofan]

currencly no lock with dm 800,i want to make a list,of today current stbs,that support,and does not support low symbolrates,the old dbox 1 does this job very well,but many new reveivers does not do it,my homecast for example,finds signal,after around 10 secounds,the i see the signal strenth very short,but it shows no signal,the response,of the tuner ist to slow,now i want to know,is ths problem,hardware or sofware "based"

I am no chief Turok, but I know that it is the tyoe of LNB which you use.
To get low symbol rates and lock on them you need high stability LNBs.
The lower the signal rate the higher stability is required. Usually PLLs are used for this, especially that they also have a lower phase noise, they can accommodate the narrower band of low signal rate transponders.
Some DROs can go down to 100khz stability.
Usually these LNBs are used by professionals to lock on feeds.
Some receivers are able to detect them with ordinary LNBs but they cannot lock.

 

[Turok]

Hello!
thanks for your reply!
iam using inverto lnbs,on other receivers, like dbox i have no problem to lock on lower simbolrates,so i think this problem,results,in the tuner sofware,of each stb itself!


around 2 years ago on 43 west was a programm,with symbolrate 197

very low,on dbox 1,it was working finde,after waiting of 30 secounds,that the tuner can reach this freqency

 

[Park Royal]

Hi Turok
Belgian radio stations load and clear on 12748H, 1097.
Parky

 

[Analoguesat]

For those very low symbol rates its often useful to offset the nominal frequency a few knz up and down to help lock.

SO if the published frequency is 12000khz you try 11998khz then 11996, 11994, 11992 and 11990, then 12002, 12004, 12006, 12008, 12010.

This can help if the lnb is a little off nominal - many are, although it doesnt matter on high SR frequencies.

 

[Turok]

yes good evening!
thank you for your inputs
what stb do you using park royal?

its the same on turksat,with some freqencys,that it helps to get lock,when i change +/-5 mhz,but strangly not @ all,this is something what i cant explain!


how many difrent beams,for europe alone,has the telekom satelites?
i think the footprint,of this birds,are not so wide,in south or north europe,then on the astra satelites,for example,and need much bigger dishes

with dbox 1 look also no problem!

 

[Analoguesat]

Footprints library right here on the forum

http://www.satellites.co.uk/satellite/satellite-footprint-library/110357-footprint-maps-index.html

 

[Turok]

wow,thank you analouge sat,i dont know this topic,there are to many,to read them all
this is a lot of work to do for each satelite!

our hobby,takes much time,when we want to go into details!

 

[canofan]

For those very low symbol rates its often useful to offset the nominal frequency a few knz up and down to help lock.

SO if the published frequency is 12000khz you try 11998khz then 11996, 11994, 11992 and 11990, then 12002, 12004, 12006, 12008, 12010.

This can help if the lnb is a little off nominal - many are, although it doesnt matter on high SR frequencies.

Thanks for this useful suggestion.
I had noticed the discrepancy between the published frequency and the one displayed on my dreambox.
Inspired by your suggestion, I corrected the L.O. frequencies on the satellite configuration page and now the dreambox displays the published frequency exactly. But still no lock.
Now I shall go on to the next step.
i.e. Work individually on the signal rates of the individual transponders as you described.
I hope this effort would save the expense for a PLL or a higher stability DRO.
THANKS

 

[Park Royal]

Hi Turok
As per my profile
My System: Smart lnb, 1m Gibby dish, Stab motor, TM5200D receiver, 57east to 61west.

Just tried a TM 1000D on 12748H, struggling but will not lock on that low SR.

@Analoguesat
Have you re-read your post? kHz??.
In my day 12 GHz = 12000MHz =12000000kHz = 12000000000Hz.
Too much amber liquid last evening?lol

Parky

 

[Analoguesat]

Oops

 

[canofan]

gulfsat package


11554 v and 11595 v,with standart symbolarates!

currencly i have no signal with 1,25 m gregory and bad weather,so i just found this transponders,and i want to know,how is signal in difrent areas!


the last transponder,is a beligian mux,with very low simbolrate 12748 H 1097 2/3

currencly no lock with dm 800,

Gulfsat: forget it we are out of the footprint.

Belgian mux are radio channels. But they are at the end of the high band.
Some LNBs are unable to react to those high frequencies. Another LNB may do the job.

 

[deepbluesky]

According to your initial question Turok, i started a survey in greek boards since they are in the fringe area to see if the reality is better or worse than the footprint. Well, both frequencies on the ME Beam can be received on the very limit in Chania with 1.10m Tecatel and SS2 and in Syros on Gibertini 1.50m, Nokia 9902 the values are as followed: 11554 V 6.1db S/N , 11595 V 5.9 db S/N with latter breaking up sometimes. In Athens a 1m cannot get them anymore. The next people to ask would be Paolo Grandicelli in Civitanova (3.70m Prodelin) and Coviello in Potenza (Prodelin 3.30m). If they won't get them then you should forget them.

 

[Turok]

Hi!
good to see you here,after long time!

welcome back!

thank you for clrearing,always,my "beam"questions,its always,intresting,what in greece is posible,what other,will say,here in central europe,its an imposible project!

the try,and error priczip is the best,to find aswers!

 

[Sotos65]

Hello to all! I'm the one from west Crete (Chania) that deepbluesky is talking about in his previous message. As deepbluesky says, the reception of AB2's ME beam is very limited here, sometimes it is fine, sometimes full of artifacts. The reception is possible with a 1.10m dish (tecatel) and a Skystar HD2 pci card (also with a Technomate TM-5300 D+ usb set top receiver).

 

[deepbluesky]

Great to see you here Soto

 

[Sotos65]

Thanks Christo!!

 

[Turok]

Hello Satos!
welcome on board

do you have ,akways the same signal strenth,or is it in night time better,then on day?
you also get the 3. sterable beam transponder,of the sterable beam?

 

[Sotos65]

Hello Turok! The signal strength is variable, you may see this also on my screenshots, two of them (taken several days ago) show very low signal strength, the third (with the Al Kout channel) is taken just two hours ago when the signal was somewhat stronger, without artifacts in the picture. Actually I haven't spotted yet when the signal is stronger (day or night), but now that you mentioned this, I will! As for the beam, I'm talking about the steerable (this is the ME beam of AB2), I have no problem (or little) with the paneuropean beam. Is there a third (active) transponder in the steerable beam? I can only see 2, 11555V and 11595V.

 

[Sotos65]

To conclude with the ME beam of AB2 I made some reception tests early in the afternoon yesterday, and one right now (1:40 AM greek time). Actually there is no big difference in signal quality, the margin between having artifacts or not is very low. The signal doesn't seem to fade away totally during the day but I'm having too many artifacts at early afternoon. On the other hand the signal is somewhat better during the night, but it is still quite low. I'm having very few or no artifacts at night. The four screenshots demonstrate the differences between afternoon and night.

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