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Interactive Beam Footprint Library


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149 replies to this topic

#126 OFFLINE   P Smith

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Posted 25 May 2014 - 09:28 PM

same for 103W with SW-1 ... any tpn for DTH signal in Ka coming as 36 MHz bands


Edited by P Smith, 25 May 2014 - 09:30 PM.


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#127 OFFLINE   Gary Toma

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Posted 04 June 2014 - 03:29 PM

Yes, 'spear61' is on top of things...

 

He is aware of the D15 Satellite filing and hopes to have our Beam Footprints ready in the next few days.




#128 OFFLINE   Gary Toma

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Posted 05 June 2014 - 03:30 PM

SATELLITE DIRECTV 15 @103W

Beam Footprints added 6/5/2014

EDIT: 7/16/14 - Deleted Original Single BSS Beam, added three

new BSS Beams in accordance with supplemental filing.

 

EDIT: 7/20/14 - Added KBUS_ConusPlus KA Beam



Beam Footprint: D15_KaHI_Hawaii
Beam Footprint: D15_KaPR_Puerto_Rico
Beam Footprint: D15_KaUS_ConusPlus

Beam Footprint: D15_KBUS_ConusPlus_KA
Beam Footprint: D15_CAK_BSS_Continental
Beam Footprint: D15_KuHI_Ku_Hawaii
Beam Footprint: D15_KuPR_Puerto_Rico
Beam Footprint: D15_KuUS_ConusPlus

Beam Footprint: D15 HI BSS Hawaii

Beam Footprint: D15 PR BSS Puerto Rico
 




#129 OFFLINE   HoTat2

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Posted 16 July 2014 - 01:14 PM

SATELLITE DIRECTV 15 @103W

Beam Footprints added 6/5/2014



Beam Footprint: D15_KaHI_Hawaii
Beam Footprint: D15_KaPR_Puerto_Rico
Beam Footprint: D15_KaUS_ConusPlus
Beam Footprint: D15_KBUS_ConusPlus_BSS
Beam Footprint: D15_KuHI_Ku_Hawaii
Beam Footprint: D15_KuPR_Puerto_Rico
Beam Footprint: D15_KuUS_ConusPlus
 

Hey Gary;

 

Note of correction here;

 

It seems DIRECTV filed a little later on 6/12/14 for a modification to the RB-2 license so the RDBS payload antenna aboard D15 will be multi-beam to cover ConusPlus, PR, and HI., as well like with the Ka and Ku payload antennas are.

 

http://licensing.fcc...ing_key=-265801

 

So no longer just the single beam "D15 KBUS ConusPlus BSS" in the earlier D15 filing marked in red above.

 

Perhaps you can notify spear61 that three new plots are needed for downlink beams of "GXT1," "2", and "3" from the link above to correct the single BSS (RDBS) beam entry for D15 here as well as for RB-2 on page 1.

 

Their should be a similar filing for a modification to RB-1's antenna as well I would think. But I can't find one.

 

I also think it's pretty safe now to drop Mexico and S.A. beam from both the RB-1 and 2 entries on page 1 as they appear to be only for the CONUS+, HI, and PR.   


DIRECTV sub. since Sep. of '95


#130 OFFLINE   Gary Toma

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Posted 16 July 2014 - 05:55 PM

The D15 Beam Footprint (Post #128) has been updated with the three new BSS Beam Footprints.  How is THAT for a speedy response??   Yes - thank you once again, spear61 !

 

One new feature begun with these three new BSS Beam Maps that some folks (translated: HoTat2) should really enjoy:

 

While displaying the Beam Footprint, open up the GoogleEarth 'Sidebar' display.   [View/Sidebar]   There in the Sidebar you will see a "Space Station Call Sign" displayed.  For D15, for instance, it is 2712.  Clicking that call sign link will take you to the FCC filing documentation from which the Beam Footprint was derived.  It is a neat way of linking the FCC documentation and the resultant Beam Footprints.

 

And yes, we will be working at building in those FCC links to all our existing Beam Footprint displays.


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#131 OFFLINE   HoTat2

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Posted 19 July 2014 - 12:27 PM

The D15 Beam Footprint (Post #128) has been updated with the three new BSS Beam Footprints.  How is THAT for a speedy response??   Yes - thank you once again, spear61 !

 

One new feature begun with these three new BSS Beam Maps that some folks (translated: HoTat2) should really enjoy:

 

While displaying the Beam Footprint, open up the GoogleEarth 'Sidebar' display.   [View/Sidebar]   There in the Sidebar you will see a "Space Station Call Sign" displayed.  For D15, for instance, it is 2712.  Clicking that call sign link will take you to the FCC filing documentation from which the Beam Footprint was derived.  It is a neat way of linking the FCC documentation and the resultant Beam Footprints.

 

And yes, we will be working at building in those FCC links to all our existing Beam Footprint displays.

Hey Gary;

 

Many thanks for the work of you and spear61 on this so far.

 

Sorry to be a PITA though, but unfortunately I don't think we're quite out of the woods yet on this. :)

 

Carefully re-reading the narrative and studying the newly posted Schedule S for D15 in pdf. format, it seems that the Ka band CONUS+ has two distinct beams (surely completely overlapping of course) for the Ka A and B (or hi and lo) transponder sets respectively.

 

http://licensing.fcc...ing_key=-265083

 

See the "Schedule S Tech Report," also note the beam_ids for GXT 1 ("KBUS") and 2 ("KAUS")

 

From the Narrative P. 7

 

... Any Ka-band uplink channel, the technical details of which 

(i.e., center frequency, polarization, bandwidth) are included in the accompanying 
Schedule S as channels AR001-AR024 and BR001-BR014, can be received in either 
uplink spot beam defined in the Schedule S (i.e., beams KALA and KACR). The 
corresponding downlink channels AT001-AT024, whose technical details are also 
included in the accompanying Schedule S, are retransmitted in beams KAUS, KAHI, and 
KAPR, and likewise the channels BT001-BT014 are transmitted in beams KBUS, KAHI, 
and KAPR. Because of the national downlink coverage, each channel can be used only 
once. 
 
DIRECTV-15 Beams.png
 
So correct me if I'm reading this wrong, but it appears the D15's Ka downlink beam designations are;
 
KAU - "Ka A-Band U.S.?"
 
KBU - "Ka B-Band U.S.?"
 
KAHI - "Ka Band Hawaii?" (i.e. A single beam for both Ka A and B bands)
 
KAPR - "Ka Band Puerto Rico?" (Again, means a single beam for both Ka A and B bands)

DIRECTV sub. since Sep. of '95


#132 OFFLINE   Gary Toma

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Posted 20 July 2014 - 04:01 PM

Just added the link

 

Beam Footprint: D15_KBUS_ConusPlus_KA

 

To the D15 Beam Footprint posting, #128.

 

The spear61 note:  relabeled KBUS for correct band frequency and added the link to FCC documentation.  Still working to automate building in documentation links to all existing beam footprints.




#133 OFFLINE   Gary Toma

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Posted 24 July 2014 - 01:58 PM

A good reference from spear61:

 

You will see all kinds of different descriptions of  the new frequencies in the filings and forum posts.  A real mix of descriptions for the same bands and can get confusing.

 
When in doubt, use the FCC technical definitions.
 
For reference, the definitions as specified in Title 47 of the US Code are:
 
 

12/14 GHz bands. The 11.7-12.2 GHz Fixed-Satellite Service (FSS) space-to-Earth band and the 14.0-14.5 GHz Fixed-Satellite Service Earth-to-space band.

 

17/24 GHz Broadcasting-Satellite Service (17/24 GHz BSS). A radiocommunication service involving transmission from one or more feeder-link earth stations to other earth stations via geostationary satellites, in the 17.3-17.7 GHz (space-to-Earth) (domestic allocation), 17.3-17.8 GHz (space-to-Earth) (international allocation) and 24.75-25.25 GHz (Earth-to-space) bands. For purposes of the application processing provisions of this part, the 17/24 GHz BSS is a GSO-like service. Unless specifically stated otherwise, 17/24 GHz BSS systems are subject to the rules in this part applicable to FSS.

 

Direct Broadcast Satellite (DBS) Service. A radiocommunication service in which signals transmitted or retransmitted by Broadcasting-Satellite Service space stations in the 12.2-12.7 GHz band are intended for direct reception by subscribers or the general public. For the purposes of this definition, the term direct reception includes individual reception and community reception.




#134 OFFLINE   Gary Toma

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Posted 27 August 2014 - 09:06 PM

SATELLITE D15 @103 W

 

Beam footprints added 8/27/14.

 

This post provides the Beam Footprints for D15 which were submitted to the FCC 8/25/14 as part of a supplemental filing.  As always -- thanks to spear61 for his analysis.

 

The original Post # 128 provided the beam patterns presented with the original filing, June 5, 2014.  That post was then updated with new data provided in a Supplemental filing of July 16, 2014.

 

This Post, #134 provides the beam patterns presented in yet another supplemental filing, August 25, 2014.

 

The original beam footprints are still available since it is not clear which beams are being replaced and which beams are being modified.  It may be that some beams have been deleted.  The number of beams is not consistent from filing to filing.

 

*EDIT 8/28/14*  spear61 advises that this is a 'Launch and Operate' filing and as such replaces and supersedes any previous filings.  Post #128, the old beam patterns, is left for reference only.

 

 

Beam Footprints as of 8/27/14

Beam Footprint: D15_KAPR_PuertoRico
Beam Footprint: D15_KUUS_ConusAlaska
Beam Footprint:D15_KAHI_Hawaii

Beam Footprint:D15_KAUS_ConusAlaska
Beam Footprint:D15_KBUS_ConusAlaska
Beam Footprint: D15_KUHI_Hawaii
Beam Footprint:D15_KUPR_PuertoRico




#135 OFFLINE   Gary Toma

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Posted 30 August 2014 - 02:31 PM

For Sanity:

 

 

The DIRECTV D15 KA payload is Space Station 2930.

 

The DIRECTV D15 BSS 17/24 payload is Space Station 2712

 

The DIRECTC KU payload will be one more Space Station license application, when and if they choose to use it.

 

There can be multiple 'Space Stations' on one physical satellite.




#136 OFFLINE   slice1900

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Posted 19 September 2014 - 01:59 PM

I have been curious for a while about the various Directv facilities and what they do, to learn more about how the locals work and how spot beams are uplinked. I had to sit in on a long useless con call earlier today, so I used the time to dig into the FCC filings. I was hoping for a bit more specificity on which sites uplink to 101, but it does provide a good map of what sites are out there and what they can do. This covers every facility Directv is currently licensed to uplink from in the US, so I guess in a way it is the reverse of the footprint library :)

NAME          LOCATION             Ku uplink     Ka uplink     RDBS uplink

CANOGA PARK   Los Angeles, CA                    99/101/103[*]
CRBC          Castle Rock, CO      101/110/119   99/101/103    99/103
CRDUF         Englewood, CO        101/110/119   99/101/103
ECUF          Winchester, VA       101/110/119
LABC          Los Angeles, CA      101/110/119   99/101/103    [!]
LADUF         Long Beach, CA       101/110       99/101/103
LITTLETON     Littleton, CO                      99/101/103
MWDF          Big Lake, MN                       99/101/103
MWUF          Oakdale, MN          101/110/119   99/101/103
NEDF          Littleton, NH                      99/101/103
NEUF          New Hampton, NH                    99/101/103
NWDF          Ellensburg, WA                     99/101/103
NWUF          Moxee, WA                          99/101/103    99/103
PAS ATLANTA   Atlanta, GA          101/110/119
SWDF          Benson, AZ                         99/101/103
SWUF          Tucson, AZ                         99/101/103

[*] Ka hi only
[!] Yes, LABC is not currently licensed for RDBS!

Based on this it is a little easier to explain/understand how spot beams work, since 119 makes for a nice simple example. There are five sites licensed to uplink to 119. [Edit: the site in Atlanta was originally missed, so there is an additional site not included when I wrote this] The two in Colorado are only 20 miles apart, so can probably be considered as one for the purpose of uplinking unless the satellite can aim its receiving antenna a lot more precisely than I would think!

 

ECUF and MWUF collect the locals uplinked to 119 from the eastern US and midwest, respectively, and LABC and/or CRBF collect the locals out west. One of those two main broadcast centers uplinks the 7 CONUS transponders for 119, the other would uplink the western US spot beams, and the ECUF and MWUF would uplink their own locals. The allocated uplink frequencies for all 11 transponders Directv is licensed for would be used to do this. Thus, the three sites could uplink a maximum of 33 spot beams; there are in fact 29 spot beams broadcast from 119.

 

While it would be impossible to ever determine what is uplinked from where for the spots from 99 and 103 based on this information, it seems clear that there's absolutely no role for 101's Ka capability in all this. HoTat2 recently posted details on the uplink/downlink for Ka from 101, and it makes even less sense now that I've dug up the complete list of Directv sites.

 

D8 has "receive spotbeams from Seattle, Atlanta and NY". Directv has no licensed Ka uplink facility in any of those places! It also can receive a spot beam from CRBC as an alternate path to LABC, where it has a downlink. It has a second downlink to Kansas City, but Directv has nothing there unless it is receive-only and doesn't need to be licensed. D9 can receive a spot beam from LABC and Boise, ID (nope, Directv has nothing there either) and can downlink to MWUF or SWUF. So essentially all 101 can do is provide an alternate path from CRBC to LABC, and LABC to MWUF and SWUF.

 

Edit: Added PAS ATLANTA which was missed previously, which adds an additional site able to uplink to 119


Edited by slice1900, 20 September 2014 - 07:25 PM.

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#137 OFFLINE   HoTat2

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Posted 20 September 2014 - 04:39 AM



I have been curious for a while about the various Directv facilities and what they do, to learn more about how the locals work and how spot beams are uplinked. I had to sit in on a long useless con call earlier today, so I used the time to dig into the FCC filings. I was hoping for a bit more specificity on which sites uplink to 101, but it does provide a good map of what sites are out there and what they can do. This covers every facility Directv is currently licensed to uplink from in the US, so I guess in a way it is the reverse of the footprint library :)

NAME          LOCATION             Ku uplink     Ka uplink     RDBS uplink

n/a           Brooklyn, NY         101
CANOGA PARK   Los Angeles, CA                    99/101/103[*]
CRBC          Castle Rock, CO      101/110/119   99/101/103    99/103
CRDUF         Englewood, CO        101/110/119   99/101/103
ECUF          Winchester, VA       101/110/119
LABC          Los Angeles, CA      101/110/119   99/101/103    [!]
LADUF         Long Beach, CA       101/110       99/101/103
LITTLETON     Littleton, CO                      99/101/103
MWDF          Big Lake, MN                       99/101/103
MWUF          Oakdale, MN          101/110/119   99/101/103
NEDF          Littleton, NH                      99/101/103
NEUF          New Hampton, NH                    99/101/103
NWDF          Ellensburg, WA                     99/101/103
NWUF          Moxee, WA                          99/101/103    99/103
SWDF          Benson, AZ                         99/101/103
SWUF          Tucson, AZ                         99/101/103

[*] Ka hi only
[!] Yes, LABC is not currently licensed for RDBS!

Based on this it is a little easier to explain/understand how spot beams work, since 119 makes for a nice simple example. There are five sites licensed to uplink to 119. The two in Colorado are only 20 miles apart, so can probably be considered as one for the purpose of uplinking unless the satellite can aim its receiving antenna a lot more precisely than I would think!

 

ECUF and MWUF collect the locals uplinked to 119 from the eastern US and midwest, respectively, and LABC and/or CRBF collect the locals out west. One of those two main broadcast centers uplinks the 7 CONUS transponders for 119, the other would uplink the western US spot beams, and the ECUF and MWUF would uplink their own locals. The allocated uplink frequencies for all 11 transponders Directv is licensed for would be used to do this. Thus, three sites could uplink a maximum of 33 spot beams; there are in fact 29 spot beams broadcast from 119.

 

While it would be impossible to ever determine what is uplinked from where for the spots from 99 and 103 based on this information, it seems clear that there's absolutely no role for 101's Ka capability in all this. HoTat2 recently posted details on the uplink/downlink for Ka from 101, and it makes even less sense now that I've dug up the complete list of Directv sites.

 

D8 has "receive spotbeams from Seattle, Atlanta and NY". Directv has no licensed Ka uplink facility in any of those places! It also can receive a spot beam from CRBC as an alternate path to LABC, where it has a downlink. It has a second downlink to Kansas City, but Directv has nothing there unless it is receive-only and doesn't need to be licensed. D9 can receive a spot beam from LABC and Boise, ID (nope, Directv has nothing there either) and can downlink to MWUF or SWUF. So essentially all 101 can do is provide an alternate path from CRBC to LABC, and LABC to MWUF and SWUF.


Nice post;
 
And thanks for taking the time to dig all this up.
 
Just a couple of points, DIRECTV seems to have a Ku uplink facility at PAS Atlanta which is now an Intelsat site --- 
 
Two Ku 8.1m Dishes located at the PAS (PanAmSat) ATLANTA uplink site, which is now owned by Intelsat
2857 Fork Creek Church Rd., Dekalb Co., Ellenwood, GA.
33°39'50.00" N. LAT. 84°16'24.00" W. LONG.
 
And DIRECTV has applied for an RDBS license at their NEUF to pair with their one at the NWUF. Changing plans for it at their SWUF.  

DIRECTV sub. since Sep. of '95


#138 OFFLINE   slice1900

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Posted 20 September 2014 - 11:10 AM

I was doing a search on applicant/licensee name "directv", service "SES", application type "LIC" to keep the numbers manageable. For some reason that Atlanta site doesn't have a license application listed, so it was missed. Maybe a clerical error on the FCC's part?

 

Is there any way to know if that site, or the one in Brooklyn, is still in use by Directv? Do they have to file anything if they shut it down, or will the license remain until it expires and nothing is filed to renew it?

 

As far as RDBS, I was only grabbing active licenses. I know the situation will change over time as RDBS licenses are added, but they've got a pretty good collection of sites. Other than perhaps shutting down the Ku only locations like Brooklyn, Atlanta, and ECUF when they dump MPEG2 in a few years, there shouldn't think there would be many changes beyond additional RDBS licenses.


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#139 OFFLINE   HoTat2

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Posted 20 September 2014 - 03:46 PM

I was doing a search on applicant/licensee name "directv", service "SES", application type "LIC" to keep the numbers manageable. For some reason that Atlanta site doesn't have a license application listed, so it was missed. Maybe a clerical error on the FCC's part?

 

Is there any way to know if that site, or the one in Brooklyn, is still in use by Directv? Do they have to file anything if they shut it down, or will the license remain until it expires and nothing is filed to renew it?

 

It's earth station E930229 comprising two 8.1 m Ku band dishes designated "AK31" and "AK32" and they appear, along with others, to be in the process of transferal over to AT&T as a prelude to the possible merger I guess. Which is probably why the search engine criteria you entered caused a miss.

 

See the recent "Transfer of Control" filing on 6/12/14 here, Exhibit A;

 

http://licensing.fcc...rC/File Number 

 

As for the Brooklyn question, DIRECTV apparently applied and was granted a transfer of the station to the Atlanta facility back in 2003.

 

See the FCC filing here, where in the description apparently DIRECTV meant "Spring Creek" which is an area in Brooklyn, but misspelled it "Sprink Creek, N.Y." which does not exist.

 

http://licensing.fcc...erC/File Number

   

 

As far as RDBS, I was only grabbing active licenses. I know the situation will change over time as RDBS licenses are added, but they've got a pretty good collection of sites. Other than perhaps shutting down the Ku only locations like Brooklyn, Atlanta, and ECUF when they dump MPEG2 in a few years, there shouldn't think there would be many changes beyond additional RDBS licenses.

 

Yes, I realize that and don't know why I even bought that point up.

 

My apologies on that ....


DIRECTV sub. since Sep. of '95


#140 OFFLINE   slice1900

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Posted 20 September 2014 - 07:31 PM

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.

 

Anyway, for the moment it is still operated by Directv, and may uplink SD locals to 101 or 119 from DMAs down south so I'll leave it in.


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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.


SL5, PI-6S, SA-6AL 3xSWM16, 21 H20-100, 1 H20-600, 7 H24-700/AM21


#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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