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View Full Version : It will be AMC 2 at 105w in August

JohnH
07-04-03, 08:13 PM
http://www.ses-americom.com/media/2003/07_02_03.html
Darkman
07-05-03, 02:38 PM
http://www.ses-americom.com/media/2003/07_02_03.html

John,
Will the same 18 or 24 inch Round Dish with the same LNB that currently could be used for 61.5, 110, 119, 148 locations work at this 105w Sat. Location as well?
Or some other type of LNB and/or Dish will be needed for 105w?
Or no one really knows yet anyhow? :evilgrin:
JohnH
07-05-03, 04:23 PM
Larger dish. Linear Ku FSS LNBF instear of Circular DBS LNBF.
Darkman
07-05-03, 04:27 PM
What's the Minimum siize that will work for that Dish?
JohnH
07-05-03, 04:30 PM
Probably 30" since it only has 60 watts per.
Darkman
07-05-03, 04:32 PM
30 " then will work no problem? (or might not be large nuff' also?)
JohnH
07-05-03, 04:35 PM
Wait and see. :)
Darkman
07-05-03, 04:38 PM
LOL
Mike123abc
07-05-03, 05:31 PM
They might just run QPSK and low FEC like 2/3 and get 1 HDTV channel per transponder to make the antenna requirements easier. Then when they get the more powerful AMC-15 up there next year they can switch to 8PSK and get 2 HDTV channels per transponder. By adding more error correction they can compensate for lower power.
Chris Freeland
07-05-03, 10:15 PM
They might just run QPSK and low FEC like 2/3 and get 1 HDTV channel per transponder to make the antenna requirements easier. Then when they get the more powerful AMC-15 up there next year they can switch to 8PSK and get 2 HDTV channels per transponder. By adding more error correction they can compensate for lower power.

Could they run 8PSK at 2/3 FEC and get 2 HDTV channels per TP and still use the 26" SuperDish or not? I guess it is not a big deal if E* is forced to run QPSK and 1 HDTV channel per TP until they can launch AMC15 in 04, with 24 TP's their should be enough room on this bird to have a complete ATHD package and many or all of the new locals scheduled for Q3 and Q4 of this year.
Jacob S
07-05-03, 10:27 PM
Why would it take a 30" dish if it was just one dish itself if they are going to use a 26" dish? Also I have noticed that the earlier Primestar dishes that had come out were bigger than the ones they came out with later. Did the signal quality go down as a result or were they able to have some improvements with the signal. I mention this because I wonder if Dish would be able to do the same in the future as well with the SuperDish.
Mike123abc
07-06-03, 12:06 AM
I believe AMC-2 is running at 60 watts/transponder. E3 is doing 8PSK 2/3 at 110 watts/transponder. AMC-15 should be at 110 when it gets to orbit to replace AMC-2.

At 60 they will probably have to use a large error correction to prevent rain fade. That way they do not have to require people to use a one meter dish.
Tonto
07-06-03, 03:41 AM
Why would it take a 30" dish if it was just one dish itself if they are going to use a 26" dish? Also I have noticed that the earlier Primestar dishes that had come out were bigger than the ones they came out with later.

Satellite spacing is the answer. The closer the spacing; the larger the dish must be for the LNBF to "see" only 1 satellite. 105 is only 2.3 degrees from ANIK F1 "the world's most powerful commercial satellite"

This will be even more important for E9 @121 as it will be surrounded on 2 degree spacing by Galaxy 10 and the not yet built/launched ANIK F3
Jacob S
07-06-03, 01:08 PM
So basically it has to be larger to focus in on that one satellite to prevent interference.