Astra 2E at 28.2E: General Discussion Part 1

[Analoguesat]

Yes please refrain from commenting on whats posted on other forums. It only causes bad feelings, and hassle for the staff.

We will find out in the near future whats going to happen.


As for the Freesat home tp it'll be fixed one way or another - SES would have bad pr in bucketfuls if they managed to disable a couple of million FS boxes!

 

[M60]

inresting if it go 12500 band and low band of astra 2f ?

I suspect it will go to 2G and on a similar frequency within the same sub-band at the current EB1 frequencies, although on an SES 15MHz offset allocation plan, as per their other TP's. I wonder too if SES will use a lower SR of 22k and FEC 5/6 on the Eutelsat rented TP's which will achieve the same netto bitrate of 33.79mb, thus saving RF bandwidth? I see how both parties have dressed this up to be mutually agreeable but it's SES's craft that are hosting these TP's so in essence although Eutelsat can still operate, it's SES who've won in my opinion!

 

[solly]

I suspect it will go to 2G and on a similar frequency within the same sub-band at the current EB1 frequencies, although on an SES 15MHz offset allocation plan, as per their other TP's. I wonder too if SES will use a lower SR of 22k and FEC 5/6 on the Eutelsat rented TP's which will achieve the same netto bitrate of 33.79mb, thus saving RF bandwidth? I see how both parties have dressed this up to be mutually agreeable but it's SES's craft that are hosting these TP's so in essence although Eutelsat can still operate, it's SES who've won in my opinion!

the astra 2g similar like astra 2f
the coverange much betterh then 2f
maybe also 2e take band of eb 1

 

[Huevos]

keep 2A as backup until 2G arrives? would also save fuel on 2A as station keeping unnecessary.

If they let it go inclined it wouldn't be much of a backup.

 

[Pride Of Cucamonga]

If they let it go inclined it wouldn't be much of a backup.

Yes, true. Maybe not inclined, but could do fewer manoeuvres as long as could get back to position in reasonable time (if needed)? A question more than a theory

 

[Huevos]

could do fewer manoeuvres as long as could get back to position in reasonable time (if needed)?

Doesn't work like that. Fewer corrections means when it is corrected more fuel would be used on each correction. Net result is fuel use is the same.

 

[timo_w2s]

Doesn't work like that. Fewer corrections means when it is corrected more fuel would be used on each correction. Net result is fuel use is the same.

So basically a satellite has a usable DTH life span of about 15 years from launch, whether it's used or not?

 

[Schroeder]

I'm sure they can migrate STB's from that TP to another, providing there's some dual illumination. Also, within the EIT data transmit alongside other channels I'm sure there's default TP NIT data so, say, a STB that is powered down and misses the dual illumiation period can find the Freesat Home TP. A Box re-scan would also pick it up too.

The box only scans on 11428H for EPG and firmware updates unlike Sky where you can use any transponder (albeit with restrictions) that you specify through the menu, so it would need something to update it, like a downloadable patch, if it was switched off would require a USB stick "patch" to fix it, assuming one was available.

 

[M60]

the astra 2g similar like astra 2f
the coverange much betterh then 2f
maybe also 2e take band of eb 1

It looks like 2E can't cover the EB1 allocation (11.2-11.45GHz) as no noted testing took place in these bands at 43.5E. As others strongly suspect, and I'm inclined to agree, EB1 will remain until 2G arrives, 2G or 2F (or a combination of the two) can then support this band.

Once 2G arrives I reckon 2A will disappear off to 23.5E to provide backup for 3B, possibly sooner if 2C can be relinquished from 19.2E back to 28.2E - and that will only happen once 1N goes to 19.2E. It's like the SES pass the parcel game!

Edit: Thanks Schroeder for that, surely though Freesat could re-map it fairly easily by dual illumination? They would need to do this for a fair bit of time though to make sure all STB's (at least those powered down for short periods) receive the update?

 

[satesco]

Here 's the press release on Eutelsat 28B (formerly W2M ) from 28.5 E:

"Eutelsat Communications (NYSE Euronext Paris: ETL and the Afghanistan Ministry of Communications & Information Technology (MCIT) announced they have signed an MOU that brings to Afghanistan satellite resources that will enhance deployment of that country's national broadcasting and telecommunications infrastructure, as well as its international connectivity.

Under the multi-year agreement, Eutelsat, at the end of February, will deploy their Eutelsat 28B (formerly W2M) in-orbit satellite from 28.5 degrees East and move it to 48 degrees East to deliver full national coverage and extensive reach of Central Asia and the Middle East. The satellite will be officially called AFGHANSAT 1 by the Government of the Islamic Republic of Afghanistan, reflecting Afghanistan’s entry into the commercial satellite business. AFGHANSAT 1 will support a wide range of services including broadcasting, mobile telephony backhaul and IP connectivity. Eutelsat and the MCIT have also agreed on exploring opportunities for longer-term cooperation. Terms of this agreement have not been disclosed by either the company or the country."

Eutelsat's infosite is located at:http://www.eutelsat.com/

 

[Schroeder]

It looks like 2E can't cover the EB1 allocation (11.2-11.45GHz) as no noted testing took place in these bands at 43.5E. As others strongly suspect, and I'm inclined to agree, EB1 will remain until 2G arrives, 2G or 2F (or a combination of the two) can then support this band.

Once 2G arrives I reckon 2A will disappear off to 23.5E to provide backup for 3B, possibly sooner if 2C can be relinquished from 19.2E back to 28.2E - and that will only happen once 1N goes to 19.2E. It's like the SES pass the parcel game!

Edit: Thanks Schroeder for that, surely though Freesat could re-map it fairly easily by dual illumination? They would need to do this for a fair bit of time though to make sure all STB's (at least those powered down for short periods) receive the update?

Interesting Idea. Let's see what the solution is from Freesat, as the patch will need to come from multiple suppliers, it affects all Freesat boxes not just HDR's. Seems E28A is off somewhere, so maybe they need to sort it sooner rather than later.

 

[gibertini]

So basically a satellite has a usable DTH life span of about 15 years from launch, whether it's used or not?

theres only so much station keeping fuel on board as you know so im guessing even if the txp,s are not being deployed it still needs in orbit correction although in inclined figure of eight it would be"parked longer" anyone any idea of the longest time a commercial craft has lasted in service until all the txp,s, beacons,panels,fuel ect have total gone before graveyard

 

[timo_w2s]

Seems E28A is off somewhere, so maybe they need to sort it sooner rather than later.

If you are referring to the press release, it's about 28B which was only really a backup. Interesting that it is going so soon though...

 

[Tururu]

So basically a satellite has a usable DTH life span of about 15 years from launch, whether it's used or not?

It really is the fuel reserve that determines the life of the satellite, the correction of the position of the satellite is calculated by millimeters to save 100% (repeated every 24 hours), for these the "dances" from 19Este to 28Este and vuelte (if returns Astra1N) to over a satellite/technician will cost an upset and shorten its useful life.
Are moved to the "graveyard orbit" if I remember correctly, is 2 months of useful life ("fuel").

with clear skies and signals the limit, these corrections can see / measure and make a truth table, so we can see if the satellite is at the point of maximum signal (when we adjust the antenna).

Easy to do with the old Astra1F at 19°East and Astra2D at 28°East (Madrid).
--------------------
Realmente es la reserva de combustible lo que determina la vida del satelite, la correccion de la posicion del satelite esta calculada al milimetros para economizar al 100% (repetida cada 24 horas), por esos los "bailes" desde 19Este a 28Este y la vuelte (si vuelve el Astra1N) a mas de un tecnico/satelite le costara un disgusto y acortara su vida util.
El translado a la "orbita cementerio" si no recuerdo mal, son 2 meses de su vida util ("combustible").

Con cielo despejado y con señales al limite, estas correcciones se pueden ver/medir y hacer una tabla de la verdad, asi podemos ver si el satelite esta en el punto de maxima señal (cuando ajustamos la antena).

Facil de ver con el viejo Astra1F a 19ºEste y el Astra2D a 28ºEste (Madrid).

 

[Llew]

Currently testing carriers in the 11.470 - 11.680 area (28A/28B.) I can't home in on any one carrier, they're dancing around like a pig on a stick

 

[Acuario]

No changes detected here overnight - the wait continues!

 

[solly]

the probley start tonight

 

[Huevos]

Disney channels still mapped to 10861.

 

[Pride Of Cucamonga]

Is there any empirical evidence that UK beams exist in bands E, F and G on AStra 2F, let alone 2E?

 

[Lazarus]

The lull before the storm ....................


At long, long last we'll very soon find out the actualitế