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#141 OFFLINE   HoTat2

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Posted 21 September 2014 - 05:23 AM

OK, thanks for the updates. I removed Brooklyn from the list. I left Atlanta in for now. It doesn't make sense that Directv would file to transfer control of anything to AT&T before the sale is finalized, and only file to transfer this one station. Very odd....

 

 

No, if you look carefully in the first link I posted earlier regarding the transfer of control of the Atlanta earth station E930299 and download the "Exhibit A" document under the attachment menu. It appears that DIRECTV has filed for transfer of all it's Ku band satellite licenses at 101, 110, and 119 and their associated earth stations to AT&T.

 

S2455 - D7S

S2430 - D4S

S2673 - D5

S2669 - D9S (Ku-band payload)

S2632- D8 (Ku-band payload)

 

And all the above have the following associated Ku earth station licenses filed for transfer as well. 

 

E020172 E020241 E020242 E030105 E030117 E050112 E050113 E050121 E050122 E050255 E060014 E060236 E060441 E930229 (PAS Alt. site) E930304 E930485 E950349

 

But I agree, I don't understand why these T/C applications before the merger is even approved by government regulators. :confused: 


Edited by HoTat2, 21 September 2014 - 05:26 AM.

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#142 OFFLINE   slice1900

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Posted 28 November 2014 - 07:42 PM

So going back to my post a couple months ago where I detailed the various uplink/downlink facilities Directv uses, I figure the outage earlier today could provide a few more clues as to how the process of local delivery works. Based on the location of the outage, one would assume the fiber cut involved either the NEDF or NEUF. The fiber cut must have been within a mile or two of the facility, otherwise the telco would have been able to route around the damage and get them back up much more quickly.

 

The outage apparently affected HD only, not SD, so those must be uplinked from a different facility, probably ECUF or PAS ATLANTA? There were reports though that some areas of South Carolina and New Jersey still had their locals. Presumably they use the same broadcast center, but maybe their locals come in on a different fiber than the one that was cut?  Can't think of any other reason why they'd be OK when most other locations were down.

 

Too bad that Ka on 101 doesn't actually provide any useful backhaul capacity for this sort of thing, it would have come in handy :)


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#143 OFFLINE   slice1900

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Posted 07 December 2014 - 01:06 AM

I later saw an article that it was a fiber cut to the NEUF that caused the outage. The list of affected DMAs left a lot of DMAs in the east unaffected, so I would guess that some use NEUF and some use NEDF. I don't understand the naming scheme, as I can't imagine what the North East Downlink Facility or any of the other three regional "downlink facilities" could actually downlink. My guess would be that each backs up the other but normally they split the load.

 

The 'backup' capability between the two is probably intended for issues with uplinking (i.e. equipment failure or localized super heavy rain bad enough to rain fade a very large dish plus amplifier) rather than fiber cuts, but if so they might want to revisit that :)


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#144 OFFLINE   slice1900

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Posted 21 December 2014 - 03:01 PM

Is there any way to get the info on the Hawaii beam for D10/D11/D12? It isn't in the beam footprints, and the data doesn't seem to be included in the LOAs either. I'm trying to figure out if there's much difference in the signal power Hawaii gets for those satellites versus CONUS. D14/D15 give Hawaii slightly better signal power versus most of the US, but D8/D9S provide significantly less.

 

I'm curious what the big dish is actually needed for. Is it just Ku from 101 that needs the extra boost, or do the current set of HD satellites also provide a lower signal to Hawaii? I figure the added free space loss due to distance at barely more than 1 db, so if Hawaii received the same or slightly better signal power than the bulk of CONUS from all satellites as it will with D14/D15, it would no longer require the larger dish.


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#145 OFFLINE   Gary Toma

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Posted 21 December 2014 - 07:28 PM

 A comment from spear61, our 'Beam Master':
 
D12 Hawaii beam is in your files.  Directv only provided some example spot beams in the filings for D10 and D11  so no one other than Directv and their manufacturer has that information.  Their rational at the time was that it was too big a work burden to provide all the individual spot beams. And, the spots would all meet the technical parameters of the principle permitted coverage (Conus) .  All of the newer satellites include the complete set of beams.
 
Note: the D12 Hawaii beam is in the D12 Post (Post #12) as beam A3BB.  For D14, the Hawaii beam is in the D14 Post (Post #13).  The dBw signal level concentric bands should give you something to work with.
 
 
 



#146 OFFLINE   slice1900

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Posted 22 December 2014 - 12:01 AM

 

 A comment from spear61, our 'Beam Master':
 
D12 Hawaii beam is in your files.  Directv only provided some example spot beams in the filings for D10 and D11  so no one other than Directv and their manufacturer has that information.  Their rational at the time was that it was too big a work burden to provide all the individual spot beams. And, the spots would all meet the technical parameters of the principle permitted coverage (Conus) .  All of the newer satellites include the complete set of beams.
 
Note: the D12 Hawaii beam is in the D12 Post (Post #12) as beam A3BB.  For D14, the Hawaii beam is in the D14 Post (Post #13).  The dBw signal level concentric bands should give you something to work with.

 

 

So D12's A3BB beam is not just a single transponder spot like the others, but covers all 16 Ka hi CONUS transponders? If that's the case, and based on spear61's comments it sounds like D10 & D11 work similarly, they look to provide provide comparable or slightly better signal strength for Hawaii like D14/D15 will.

 

There would be no need for the big dish from a Ka perspective, only Ku from D8/D9S would be 'weak' beams that need the added gain. When Directv someday replaces the satellites at 101 they could do Hawaii installs using the same dish as CONUS. Not sure if it really matters too much in Alaska since it is so big it would be almost impossible to adequately cover, but in Hawaii I'd expect people would prefer a smaller dish from an aesthetic sense.


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#147 OFFLINE   HoTat2

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Posted 25 December 2014 - 10:17 AM

So D12's A3BB beam is not just a single transponder spot like the others, but covers all 16 Ka hi CONUS transponders? If that's the case, and based on spear61's comments it sounds like D10 & D11 work similarly, they look to provide provide comparable or slightly better signal strength for Hawaii like D14/D15 will.

There would be no need for the big dish from a Ka perspective, only Ku from D8/D9S would be 'weak' beams that need the added gain. When Directv someday replaces the satellites at 101 they could do Hawaii installs using the same dish as CONUS. Not sure if it really matters too much in Alaska since it is so big it would be almost impossible to adequately cover, but in Hawaii I'd expect people would prefer a smaller dish from an aesthetic sense.

From everything I've been able to grasp over the years on this issue, D10, 11, and 12 all use their same respective LiL spotbeams for Hawaii to also supply redirected Ka band nationals to the islands as well. This means that the larger AL/HI dish must indeed be needed primarily for the Ku band birds from 101 which don't have any spotbeams for Hawaii and must use an extended lobe off their CONUS beams to supply nationals.

D14 will use a spotbeam "C01" for Hawaii that carries redirected Ka nationals only (no locals for HI are supplied by D14).

Likewise, D15 will provide a spotbeam for HI (and for PR as well) that only carries redirected Ka nationals (no locals "at all" from D15 of course).

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#148 OFFLINE   HoTat2

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Posted 25 December 2014 - 01:07 PM

Of note also,

While I would assume that the RDBS beams for D14 are the same as with D15 with a spotbeam for Hawaii and PR. Unlike D15 I can find no specific mention of it in any of the FCC filings for D14 under either the S2869 or S2711 call signs.

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Edited by HoTat2, 26 December 2014 - 01:04 AM.

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#149 OFFLINE   slice1900

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Posted 25 December 2014 - 05:12 PM

You can see the beam contours for D14's RDBS on the RB1 link in this forum - at least the D14 link points you there for BSS. Judging by the contours, they are same strength as the midwest for part of the islands, same strength as the western US for the rest of the islands. Not quite as strong as D15's which are closer to Florida strength.


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#150 OFFLINE   HoTat2

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Posted 26 December 2014 - 02:04 AM

You can see the beam contours for D14's RDBS on the RB1 link in this forum - at least the D14 link points you there for BSS. Judging by the contours, they are same strength as the midwest for part of the islands, same strength as the western US for the rest of the islands. Not quite as strong as D15's which are closer to Florida strength.

Yeah...

I just thought that the beam system for RB-1 and 2 would logically be the same with a main CONUSplus beam for CONUS plus Alaska. And two spotbeams for Hawaii and PR as D15 RDBS payload is designed.

But I guess that strangely D14 will use only a single broad RDBS beam for CONUS, Akaska, Hawaii, and PR.

BTW, to Gary,

The RB-1 and especially RB-2 beam listings are way out of date.

RB-1 no longer includes a So. American beam and RB-2 no longer includes beams for Mexico and So. America and is composed of the BSS beam listings posted under D15's beams.

Edited by HoTat2, 26 December 2014 - 02:07 AM.

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