Astra 1N @ 28E - about to go on air / on air!!

[solly]

astra 2d will be end of live end december 2011
so maybe 2a will life first 2013
ses maybe take two satellite capity easy to switch tp
large satellite 55 tp astra 1n

 

[welshman234]

A beam that centred on Nigeria (as the current beam does) and tapered off in south Europe (or even France) could never be considered a spot beam. From central Spain we are 1400 great-circle kilometres and 1.5º off axis (seen from the satellite) from the centre of the UK spot beam. On the other hand we are 4800 great-circle kilometres and 5.8º off axis from the centre of the Nigerian beam. Which one do you think is going to win? Here, using a 1.8m dish, I can't even see a ripple on the spectrum from that beam.

I didnt say Nigeria I said North Africa ie Morrocco, Tunisia etc

 

[Bob Meade]

I wouldnt read too much into theoretical lifespans - the Boeing 376 spinners are ultra reliable - one was taken out of service just a couple of years ago after almost 30 years in use!

Intelsat 603 is still on air after 20 years,although rather inclined now.


The limiting factor on the spinners is the amount of onboard fuel for stationkeeping duties.

You would think by now, someone would have invented a refueler & battery replacement service for Birds, they could fly round & do the lot on one mission

 

[Huevos]

why a high high FEC is being used despite high field strengths

All this talk about error correction is pretty confusing and misleading. According to Shannon's Theorem the point of collapse of a data channel is based on power and data throughput. So if the power were the same in both cases the BBC HD transponder (10847 V 23000 8/9 QPSK, 40.6Mbps) would be more robust than the new C4 HD transponder (11127 V 22000 2/3 8PSK, 42.6Mbps).

This can be seen on any decent meter. When two signals, one QPSK and the other 8PSK, have equal signal to noise the 8PSK one will always have an MER that is 3dB worse, which is why the 8PSK signal requires greater error correction.

 

[Analoguesat]

You would think by now, someone would have invented a refueler & battery replacement service for Birds, they could fly round & do the lot on one mission

Refuelling is coming - give it another 5 years or so and we will see it happening regularly..

 

[Huevos]

I didnt say Nigeria I said North Africa ie Morrocco, Tunisia etc

Well all those countries are currently on 26ºE, and seeing as you can't achieve 2º spacing on small dishes there wouldn't be much market for such a service.

 

[Topper]

You would think by now, someone would have invented a refueler & battery replacement service for Birds, they could fly round & do the lot on one mission

They already have -http://www.space.com/11135-satellite-refueling-mission-space-debris.htmlhttp://www.space.com/11135-satellite-refueling-mission-space-debris.html

 

[M60]

There are only two groups of channels likely to go fta anytime soon.

Fiver / +1, Five US / +1 and the currently encrypted C5 regions.
The currently encrypted ITV regions.

Anything else is pure speculation.

The thing about Motors is that they were fta when I got into satellite, and were fta for several years.

Theres certainly not going to be a rush of encrypted channels going fta just because theres narrow beam capacity available. The economics dont make any sense for the channels.

SES will lease capacity to anyone who desires it and can provide the necessary paperwork and cheque. From the contracts already announced we know ITV have 3 1N tp's and C4 have one.

You also have to remember that most of the smaller channels dont lease their own capacity - they are various intermediaries such as Arqiva, BT and Globecast who provide them capacity.

I'm eagerly awaiting the C5 transponder to move over to 1N too however it's been reported that ITV are apparently closing a number of their micro-regions at the end of the year (TT South, Central S are apparently confirmed). If they decide to close a couple more and move the ITV1HD London off 10832H then they may migrate the remaining 12402V and 11973V sub-regions over to 10832H thus saving them a transponder. 10832H could support another six SD regions if the ITV1HD London feed was moved to one of their new 1N TP's.

My bet a the moment is that Sky Integration are doing various tests using 8PSK and C4HD. Not wanting to be a cynic here but I'd guess they are cleverly playing "their last gatekeeping stand" in terms of delaying the launch of the C4HD, and other services, on 1N. I can tell you for a fact that this was the case with the EB1 C4HD service, they tinkered with FEC's and SR's for nearly 4wks before their EPG was switched across (and it subsequently went FTA).

Lets hope that at least some of the existing SD channel changeovers such as C5's, if retaining the same frequency, FEC and SR's, then will simply be able to migrate over without much hassle from Sky and they can get 5* and 5US on to Freesat.

 

[Dan Dan]

yes i can see your point,but knowing SES from the start,they normally replace when they can,and use older satellies for secondary use...i still think 2d is RIP

 

[M60]

yes i can see your point,but knowing SES from the start,they normally replace when they can,and use older satellies for secondary use...i still think 2d is RIP

2D still has at least 12mths left in it (until 2F arrives). If SES move it now just because 1N has appeared then it doesn't solve their redundant backup resolution (ie having a backup satellite) as if 1N then failed 2A and 2B can't back up spotbeams!!

 

[Dan Dan]

No i said they will move channels from 2d to 1N ,i did not say they will not keep it there as backup,but i think they will move and use it somewhere else..they have not had backup there for 10 years....

 

[C0re]

11126 v is gone or did the settings change?

 

[omue]

10.000 2/3 dvb-s2 qpsk

 

[Pietclock]

It's clear again... showing ch4 hd

 

[Shrubsole]

11126 v is gone or did the settings change?

Yes nothing here at my end either. Maybe someone with better equipment can say if the settings have changed or the TP has stopped transmitting.

 

[Shrubsole]

It's clear again... showing ch4 hd

WOW things change around here fast! My post was out of date before I could hit reply!

 

[sattom]

10.000 2/3 dvb-s2 qpsk

where did you get this? My box still gets it with 8PSK 22000 but nothing with QPSK

btw at the moment NOT encrypted

 

[roberto mafara]

11127 now fta watching channel 4 hd

gosh I get 16.5db 100% compared to eurobird CH4HD 10.50db 62%

 

[Beef]

Sky Box reachable yet?

 

[C0re]

It's back, FTA now