[Gary Toma]

Here's the new Directv narrative for service to Mexico!

 

[trainman]

Thanks for posting.

Just wanted to note that to me, "narrative" makes it sound like this would be a memo that would go out to salespeople/installers/CSRs with information about Mexico service -- but this is actually DirecTV's application with the FCC to launch a new Ku-band satellite at 76ºW in order to serve Mexico. Still interesting, but not quite what I first expected when I clicked on it.

 

[HoTat2]

Just wonder what the actual plan is here?

SKY Mexico currently uses (AFAIK) 30" x 33" single slot round dishes aimed at intelsat birds located at 58w. So how does 76w fit with that?

Do they intend they to use two dishes?

Or do they intend to eventually move off the intelsat birds by re-pointing those customers to 76w?

If so then where is the real increase in capacity beyond what they already have now given that, at least according to LyngSat's latest data, SKY Mexico is currently using 24 36 MHz wide transponders on intelsat 21 at 58w?

http://www.lyngsat.com/Intelsat-21.html

 

[P Smith]

Seems to me it's obsolete data: by P Lagerstedt 080714 ie from year 2008.

 

[trh]

Seems to me it's obsolete data: by P Lagerstedt 080714 ie from year 2008.

Except on page 22 of the 30 page PDF file, it was signed on November 1, 2012.

/s/
Jack Wengryniuk
Senior Director
DIRECTV Engineering
November 1, 2012
Date

 

[P Smith]

You just jumped out of context. I did follow up previous post , not gct's URL.

 

[HoTat2]

Seems to me it's obsolete data: by P Lagerstedt 080714 ie from year 2008.

Yeah ... its probably operational data from intelsat 21's old location and services (wherever that was).

But it still amounts to 24 36 MHz transponders now for SKY Mexico's service if intelsat 21 has now replaced the former 9 and 16 as LyngSat indicates.

So how is the future Ku76 bird supposed to be an improvement in capacity I wonder?

Unless unless there contemplating a two dish arrangement or something as I said.

 

[P Smith]

You are right.
It's hard to imagine new sat with same set of tpns 24x36 MHz would be the "improvement".
Perhaps it's has more powerful TWTA ? Doesn't looks like. Same 150W.
New modulation ? DVB-S2 16APSK or 32APSK ?

 

[RobertE]

Someone check my math, but it's only 18deg between 76w and 58w. Same as it was for the Phase III dish here in the states 101-119. They may even use the slimline which we already know covers 20deg 99-119.

 

[HoTat2]

Someone check my math, but it's only 18deg between 76w and 58w. Same as it was for the Phase III dish here in the states 101-119. They may even use the slimline which we already know covers 20deg 99-119.

I considered a multi-sat dish, but since SKY Mexico uses the commercial FSS portion of the Ku band (11.7-12.2 GHz) where the power level of the satellites are limited to well below the DBS birds operating in the BSS Ku portion (12.2-12.7 GHz), their current single slot dish is already 30" x 33" in size.

So using that as a base how large would an oval (ala P III) or elliptical (ala SlimLine) type multi-sat dish need to be and still be practical for DTH satellite service where the "small" unmovable dish has always been the major traditional selling point?

 

[P Smith]

The 76W sat's narrative have mentioned of new dish size: 65 cm ie 20".

 

[HoTat2]

The 76W sat's narrative have mentioned of new dish size: 65 cm ie 20".

BUT they always list that same 65 cm dimension in any narrative for the customer receiving dish for DTH service in their link budget computations.

Yet the current SKY Mexico dish is 30 x 33 inches. So I was using that as a "real world" basis to whats actually needed for reliable reception for the service in Mexico, Central America, and the Caribbean.

 

[David Ortiz]

Don't forget that DLA1 and DLA2 are Ku payloads headed for 95°W. Perhaps Mexico will be served by birds at 95°W and 76°W received by a single Slimline style dish.

 

[HoTat2]

Don't forget that DLA1 and DLA2 are Ku payloads headed for 95°W. Perhaps Mexico will be served by birds at 95°W and 76°W received by a single Slimline style dish.

Of what dimensions might that be though given the present 30" x 33" size of the single slot dish?

It would certainly have to be much larger than the standard 22.5" x 32.5" Slimline for DIRECTV USA service. And would such a dish be reasonable for an allegedly "small dish" DTH satellite service?

 

[doctor j]

Directv already has been granted a LOA for a KU sat at 79 W. (S2861)

http://licensing.fcc.gov/cgi-bin/ws...=V_SITE_ANTENNA_FREQ.file_numberC/File+Number

Doctor j

 

[HoTat2]

Directv already has been granted a LOA for a KU sat at 79 W. (S2861)

http://licensing.fcc.gov/cgi-bin/ws...=V_SITE_ANTENNA_FREQ.file_numberC/File+Number

Doctor j

Perhaps this explains it in section 6 of the narrative;

Orbital Locations

The DIRECTV KU-76W satellite will operate at the nominal 76o W.L. orbital
location, and specifically at 76.0° W.L (see also Section 18 and GSO Orbit tab of
Schedule S). Until fairly recently, the Commission had licensed Ku-band satellite
operations at 74º WL, 77º W.L., and 79º W.L. - i.e., three slots covering five degrees of
the geostationary arc. However, the authorizations for the latter two slots lapsed and
were made available for reassignment,1 and there is currently no Ku-band satellite
operating at 74º W.L.2 The Commission recently granted DIRECTV's application for
the Ku-band authorization at 79º W.L. to support Sky Mexico. Although this application
seeks authority to operate at 76º W.L. rather than 77º W.L. as previously authorized by
the Commission, it will maintain the same usage of orbital resources - i.e., three slots