My C band install

[Vipersan]

Hi Paul ..
Just to let you know your promo find made its way to Lyngsat ..
Reported by someone else of course..

I suspect its incorrect tho'

We have more or less concluded that this promo is both linear ..and slightly off focus with regard to Rascom ..
..as reported by Huevos..

I still suspect this signal eminates from Chinasat ...and at some point this will be confirmed and a correction posted on Lyngsat..
..but for now here are the details

Notice the 'feed' is reported as Right circular ...
rgds
VS

3760 R



(feeds)
DVB-S 5786-3/4

Continental
0 J Horváth
110719

 

[aceb]

Will be interesting to see if it gets corrected on Lyngsat, I noticed it's been mentioned on another board too. Not had much time to play today, I've rethunk my LNB arrangement after finding some info on how to set the scalar and LNB so I've been metal bashing this morning to increase the distance of the feedhorn from the dish.

A new Inverto Black Pro arrived yesterday, bit of a surprise as I was expecting a White tech but there doesn't seem to be much difference if any according to the google hits.

Last night I removed the LNB from the feedhorn and poked a laser pointer through the hole in the middle of the dish up through the feed to check my arc. Unfortunately 20E is just starting to clip next doors tree so no chance of anything further east, 20E might be do-able if I increase the ground post height. 70W or there abouts is the other limit before it hits next doors roof, 61W Ku was booming last night when I checked it.

 

[Huevos]

61W Ku was booming last night when I checked it.

Really? I've never seen any signal on that one.

I sent an email to Lyngsat saying there was an error in the listing.

 

[nelson_b]

Really? I've never seen any signal on that one.

I sent an email to Lyngsat saying there was an error in the listing.

just the data transponder at 61 west --12562 V 27000 7/8 DVB-S/MPEG-2
i had a 70 cm fixed dish on this sat for 6 months last year hoping for feeds -
scanned many times, but never saw any - l.o.l.

cheers

 

[aceb]

Yes, that's the signal, I always use it for checking dish alignment, it's 93/100% S/Q here. I've not seen any Ku band TV on anything further than 45W for a long time, I noticed yesterday when BSing 45W that Canal Info News does seem to be still on air but much weaker so doesn't lock on my 7301. There is however a new channel called Canal Adulto, can't imagine what that's about lol

 

[Huevos]

Notice the 'feed' is reported as Right circular ...
rgds
VS

3760 R



(feeds)
DVB-S 5786-3/4

Well they've taken it down now from 2.8ºE... but not put it up at 3ºE. And they are now listing 3ºE as "Eutelsat 3A".

 

[Vipersan]

A step in the right direction I guess ..
Since Eutelsat have effectively leased Chinasat ..the rebranding makes sense.

It just remains to be seen if 3A will continue to be used at this location ...or will move again after its done 'testing'
cheers Huevos

rgds
VS

 

[Huevos]

One more find from this morning is a transponder on 34.5W

Can you receive Télé Côte d'Ivoire? Seems pretty strong here.

 

[Analoguesat]

A step in the right direction I guess ..
Since Eutelsat have effectively leased Chinasat ..the rebranding makes sense.

It just remains to be seen if 3A will continue to be used at this location ...or will move again after its done 'testing'
cheers Huevos

rgds
VS

Eutelsat have an old claim filed with the ITU for a "Eutelsat 3A" at 14.8W

-http://www.itu.int/ITU-R/space/snl/bresult/radvance.asp?sel_satname=EUTELSAT%203A-14.8W

THis may or may not be relevant

 

[Huevos]

Will be interesting to see if it gets corrected on Lyngsat

It's been corrected now.

 

[aceb]

Added another satellite to my collection earlier, managed to grab two transponders from 37.5W although there appears to be another dozen just below decoding threshhold if the constellation monitor is anything to go by. This is Silverbird TV on 3773H.

 

[A nonymous]

Ooops, the wifes found out and shes not happy

Just also purchased a Scalar ring so i can use it on the old 1.2m offset to start with.

Both c band lnb (260816431813) & scalar ring (200565297380) off ebay for under £28. Result. Can't see them being the best quality, but i'm only playing for now. Its just like being a satellite virgin all over again, except this time i've got a meter

Just need to make one of those dielectric plates that Doktorofsat has kindly shown us for the L & R circular polarities.

And just when i was starting to get bored you throw the c band stuff at me, Damn you

Well the lnb i purchased on ebay turned out to be pile of Crap

It wasn't even the Brand i ordered. It was a cheap and nasty brand called "Terrific". More like "Horriffic" 'O'-red

Avoid buying C Band lnbs from The far east as you don't know what your going to end up with.

Hopefully the WS International one i have now ordered should actually work.

Nano

 

[aceb]

I've spent the afternoon making a new larger dielectric plate from a Tesco chopping board, 7mm thick, 90mm in the throat, 160mm total width across the scalar rings and a total of 87mm in front of the scalar (50mm in front of the LNBf, 37mm is distance from scalar to LNBf rim).

Results are not quite what I expected, nearly everything I'm receiving already has jumped up nearly 20% quality but the signal has remained about the same. On 5W I've gained CRTV and Viasat, Unire and Record Africa on 27.5W and 8 transponders on 40.5W but what is surprising, to me at least is that's it! No new birds and the BBC transponder on 1W has remained at 1-2% quality, no sign of the ERTU signal either.

Not sure what to do next, I've got the other half of the board so could try one without the large section in front of the scalar to see if that makes a difference? I've also got a role of self adhesive Rosco foil, it's a flexible 0.5mm thick metal foil on a roll so I've found some perspex in the shed and will make a DoS plate, I've also got Prides measurements for his so will try that as well.

That's enough dishes for the afternoon, smells like the BBQ is ready!

 

[Analoguesat]

Looks like Eutelsat 3A is to stay at 3E -

-http://www.eutelsat.com/news/press-releases.html?idCp=940

and theres a new bird on order for the slot

Eutelsat Communications (Euronext Paris: ETL) today announced that it is expanding its commercial response to high-growth video, data, telecom and broadband markets with the opening of business at the 3° East orbital position. To support further long-term expansion, Eutelsat has selected Astrium to build a tri-band satellite, which will increase and diversify its resources for markets in Africa, the Middle East, Central Asia and South America. Called Eutelsat 3B, the satellite will operate in C, Ku and Ka-bands and be launched in early 2014

In advance of Eutelsat 3B, resources on a satellite now called Eutelsat 3A were deployed this month to 3° East. This capacity is able to deliver users powerful coverage of Europe and North Africa for services that include GSM backhaul, data networks, IP backbone connectivity and maritime applications.

Wonder why 3E when they only opened up 4E 18 months or so back

 

[Vipersan]

I've spent the afternoon making a new larger dielectric plate from a Tesco chopping board, 7mm thick, 90mm in the throat, 160mm total width across the scalar rings and a total of 87mm in front of the scalar (50mm in front of the LNBf, 37mm is distance from scalar to LNBf rim).

Results are not quite what I expected, nearly everything I'm receiving already has jumped up nearly 20% quality but the signal has remained about the same. On 5W I've gained CRTV and Viasat, Unire and Record Africa on 27.5W and 8 transponders on 40.5W but what is surprising, to me at least is that's it! No new birds and the BBC transponder on 1W has remained at 1-2% quality, no sign of the ERTU signal either.

Not sure what to do next, I've got the other half of the board so could try one without the large section in front of the scalar to see if that makes a difference? I've also got a role of self adhesive Rosco foil, it's a flexible 0.5mm thick metal foil on a roll so I've found some perspex in the shed and will make a DoS plate, I've also got Prides measurements for his so will try that as well.

That's enough dishes for the afternoon, smells like the BBQ is ready!

Hi Paul ..
To be honest ..your results/improvements are pretty impressive ..
The Plate wont perform miracles..
Its function is usually to produce overall gain/quality increases accross the board ..as its not 'tuned' to any specific frquencies.

It will often bring in channels which were previously just below threshold..but it wont pull in new birds ...unless these too have channels that previously were just bordeline.
In other words ..if you couldn't see it previous to installing the plate ...chances are you still wont see 'em ..as your dish just isn't big enough to capture 'em.

In the case of norderline birds/channels ...only persistance and trial and error will give you a chance.

Keep trying m8 ..
What you've achieved so far is impressive.
rgds
VS

 

[pride21]

hi aceb the plate you are talking about i do not use anymore i have a new design which i use which gives me gain on the whole frequency its the best one after about thirty plates,if you pm me your address i will send you one already made up to fit the esx if you like.cheers.

 

[aceb]

That's very kind of you Pride, thank you and PM sent!

You're probably right VS, I think I was getting a bit carried away with what it might be able to do, actually I was trawling some old threads yesterday evening and found one from your good self that suggested the larger dielectric plate helps to clean up the signal rather than amplifying it, I think you hit the nail on the head there as I've noticed very little difference in the signal strength but I'll start to alter the sizes of this one I have to see if I can improve on it at all.

A couple of pics showing the Tesco plate as it is at the moment. BTW, the tree behind the dish in pic 1 starts at 20E, luckily for the tree it's in next doors garden.

 

[nelson_b]

hi- aceb -

your results with the v.s. plate were ok , i thought ---
i also was playing around with my C band setup yesterday - trying to fine tune and just get a little more out of it -- and i dont know if it was just local weather conditions or what, but c band reception seemed down generally here yesterday - weak signals from a number of sats were struggling to lock that i normaly can get
and some channels just would not come in at all . -- i gave up on it in the end. --- and will try again another day

i,v had good results last year with d.o.s. plates - especialy with the cheapo pauxis l.n.b. that i was using then , and earlier this year with the BSC 421 .
the dos plate that worked best in the pauxis - was a different plate to the one that worked best in the BSC421, -but currently the plate giving best all round results ( on weak signals ) on the BSC421 - 1.8 offset combination , is the v.s. style plate i made a month or more ago .

but the more i,v played around with my own setup, and noted other peoples results with theirs , --
the more it seems that each dish l,n,b, setup is quite uniqe - esecialy with smaller borderline sized dishes
and requires individual tuning with whatever- plate - feed - l.n.b. - dish - setup is being used . and it just takes time and experimentation to find what is best for your own .

i,m quite puzzled at the moment over the 3 recievable transponders at 1 west -
the other week when i was trying C band on a 1.2 channel master offset
i could get the ERTU transponder ok - and even see the signal ( just below lock ) on the AFN t.p. -- but not a sniff of the BBC one ??

On the 1.8 dish the BBC - t.p. is notably the strongest of the three and locks and works just fine

regards nelson.b.

 

[Huevos]

Nelson, have you ever tried running the C-band LNB central on your 1.8m dish? It would be interesting to know how much performance you are giving away by the C-band LNBs being offset.

 

[nelson_b]

Nelson, have you ever tried running the C-band LNB central on your 1.8m dish? It would be interesting to know how much performance you are giving away by the C-band LNBs being offset.

yes , i did for a month or so last year with the Pauxis l.n.b,
and to be honest it seemed to work just as well offset as central -- i didnt gain any channels by having it central -- and signal levels were generaly much the same - even the weaker ones -- but levels from the k/u - l.n.b when placed in the offset position did show a very noticable loss - on marginal channels - so that setup was soon swapped back ,

Sometime i would like to try the BSC 421 in the centre - just to satisfy my curiosity - but it means taking apart all the support brackets , which have become quite complex -

not enough spare time for that right now -
and from the results with the pauxis - i expect the difference would be marginal .

cheers --