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DIRECTV Satellite Discussion SKYM-1 (Ku-79W) @79W

25K views 99 replies 15 participants last post by  HoTat2 
#1 ·
#2 ·
Yeah,

As I was several years ago, still trying to figure this issue out. According to Lyngsat SKY Mexico's service is currently from IS-21 at 58W. Yet these new generation of satellites, KU-79W (SKYMex-1) and it's future partner KU-76W on the other thread, will be positioned at 79W and 76W nom. respectively as their names indicate.

Is there to be a new multi-sat dish for SKY Mex. subs. aimed at 76-79W?

Or will the current 33" x 30" single linear LNBF be repointed to 79W with a new dish or perhaps a 76W LNBF retrofit be added later to the old dish when KU-76W joins the fleet?

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#3 ·
#4 ·
#5 ·
Well ... without a correspondent down there to describe the current reception equipment, its hard to fully understand whats going on.

Are SKY Mex. subs going to begin transitioning from 58W to 79W using IS16 in the interim for around the 2 to 3 months until SKYM-1 arrives?

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#6 ·
DIRECTV requests 30 day STA for TT&C of KU-79W (SKYM-1) during IOT at 77.5W and migration to it's operational slot at 79W nom. (78.8W specifically) using it's Winchester, VA. (ECUF) Ku band earth station E150029.

Note, there is an error in the STA stating 103W as the operational slot for KU-79W.

http://licensing.fcc.gov/cgi-bin/ws.exe/prod/ib/forms/reports/swr031b.hts?q_set=V_SITE_ANTENNA_FREQ.file_numberC/File+Number/%3D/SESSTAINTR201500728&prepare=&column=V_SITE_ANTENNA_FREQ.file_numberC/File+Number

DIRECTV requests 30 day STA for TT&C of KU79W during IOT and migration using it's Ku band earth station E150117 near Tucson, AZ., (SWUF).

http://licensing.fcc.gov/cgi-bin/ws.exe/prod/ib/forms/reports/swr031b.hts?q_set=V_SITE_ANTENNA_FREQ.file_numberC/File+Number/%3D/SESSTAINTR201500730&prepare=&column=V_SITE_ANTENNA_FREQ.file_numberC/File+Number
 
#10 ·
slice1900 said:
What is this satellite being used for? I assumed it was for DTV LA only, but Gary just posted footprint maps and there is a full US CONUS footprint?
For SKY Mexico;

DIRECTV's partnership with Innova to provide DTH sat. service to primarily Mexico, as well as Central America, and parts of the Caribbean.

Not sure where the CONUS beam for KU-79W (SKYM-1) Gary recently posted in the interactive beam footprint thread came from. The most recent Schedule S I found on file for KU-79W only has Ku band H/V linear pol. downlink beams for Mexico, CA, and the Caribe (called beams "TKH" and "TKV").

And RDBS band R/L pol. downlink beams for Mexico only (called beams "TBR" and "TBL").

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#15 ·
A little behind Directv 15 but moving up

10 SKY MEXICO-1_7
Lon 19.6796° E
Lat 0.2228° S
Alt (km) 16 171.620
Azm 80.9°
Elv -28.2°
RA 15h 42m 45s
Decl -8° 18' 17"
Range (km) 24 855.914
RRt (km/s) 0.893
Vel (km/s) 4.796
Direction Descending
Eclipse No
MA (phase) 6.6° (5)
TA 13.0°
Orbit # 10

Name 0 SKY MEXICO-1_7
NORAD # 40664
COSPAR designator 2015-026-B
Epoch (UTC) 2015-06-01 17:16:16
Orbit # at Epoch 9
Inclination 0.920
RA of A. Node 30.766
Eccentricity 0.3048042
Argument of Perigee 180.226
Revs per day 1.49757044
Period 16h 01m 33s (961.55 min)
Semi-major axis 32 271 km
Perigee x Apogee 16 056 x 35 729 km
BStar (drag term) 0.000000000 1/ER
Mean anomaly 284.324
Propagation model SDP4
Element number / age 999 / 0 day(s)
StdMag (MaxMag) / RCS N/A
Diameters N/A
Satellite group N/A

Astronomical object Symbol Font Circle Symmetry


Doctor j
 

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#16 ·
doctor j said:
A little behind Directv 15 but moving up

...
This line happened to bring The Jefferson's opening song to mind: ♫Moving on, up. To the East Side...♫

Thanks, Dr. for your regular doses of awesome.

Peace,
Tom
 
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#17 ·
Getting there.

10 SKY MEXICO-1_9
Lon 36.9233° W
Lat 0.2263° N
Alt (km) 32 827.330
Azm 114.7°
Elv 24.2°
RA 07h 34m 33s
Decl -5° 17' 16"
Range (km) 36 161.535
RRt (km/s) -0.249
Vel (km/s) 3.163
Direction Descending
Eclipse No
MA (phase) 265.4° (188)
TA 255.2°
Orbit # 22

Name 0 SKY MEXICO-1_9
NORAD # 40664
COSPAR designator 2015-026-B
Epoch (UTC) 2015-06-03 11:04:02
Orbit # at Epoch 12
Inclination 0.206
RA of A. Node 26.147
Eccentricity 0.0913453
Argument of Perigee 185.762
Revs per day 1.14523040
Period 20h 57m 23s (1257.38 min)
Semi-major axis 38 590 km
Perigee x Apogee 28 687 x 35 737 km
BStar (drag term) 0.000000000 1/ER
Mean anomaly 66.228
Propagation model SDP4
Element number / age 999 / 0 day(s)

Astronomical object Science Electric blue Space Circle


Doctor j
 

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#19 ·
P Smith said:
What's a schedule of the sat? IOT position ?
IOT destination is 77.5W.

As for the schedule, like with D15's filings it's based on the original 5/20 launch date. So you'll have to guess-timate how the actual 7 day delay in the launch will modify it beyond the dates given in the following.

From the 4/15 STA for KU -79W:

-After launch and orbit raising maneuvers, DIRECTV KU-79W will be located
at 77.5° W.L. [no earlier than about May 30, 2015].

-After DIRECTV KU-79W reaches 77.5° W.L., DIRECTV will then
commence IOT of the satellite for approximately 2 weeks.

-After IOT is completed, DIRECTV KU-79W will then be drifted to its
assigned location at 78.8º W.L. (nominal) over the course of approximately 3
to 5 days [reaching that orbital position on or about June 17, 2015].

Note: Of course in the last statement here it should read something like "... assigned location at 79 W.L. nominal and 78.8 W.L. exact."

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#21 ·
Close to Geostationary Orbit. Near testing slot 77.5 W

10 SKY MEXICO-1_15
Lon 76.5914° W
Lat 0.0052° N
Alt (km) 35 737.050
Azm 161.9°
Elv 49.5°
RA 03h 17m 39s
Decl -5° 24' 15"
Range (km) 37 054.544
RRt (km/s) 0.001
Vel (km/s) 3.076
Direction Descending
Eclipse No
MA (phase) 151.8° (108)
TA 151.9°
Orbit # 17

Name 0 SKY MEXICO-1_15
NORAD # 40664
COSPAR designator 2015-026-B
Epoch (UTC) 2015-06-06 10:50:20
Orbit # at Epoch 15
Inclination 0.053
RA of A. Node 212.351
Eccentricity 0.0006608
Argument of Perigee 43.709
Revs per day 1.00535728
Period 23h 52m 19s (1432.32 min)
Semi-major axis 42 091 km
Perigee x Apogee 35 685 x 35 741 km
BStar (drag term) 0.000000000 1/ER
Mean anomaly 82.367
Propagation model SDP4
Element number / age 999 / 2 day(s)
StdMag (MaxMag) / RCS N/A
Diameters N/A
Satellite group N/A

Asphalt Road surface Slope Automotive lighting Font


Doctor j
 

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#22 ·
PARKED !

10 SKY MEXICO-1_20
Lon 77.4965° W
Lat 0.0040° N
Alt (km) 35 785.630
Azm 163.5°
Elv 49.8°
RA 03h 28m 05s
Decl -5° 24' 03"
Range (km) 37 086.774
RRt (km/s) 0.000
Vel (km/s) 3.075
Direction Descending
Eclipse No
MA (phase) 27.1° (19)
TA 27.1°
Orbit # 21
Name 0 SKY MEXICO-1_20
NORAD # 40664
COSPAR designator 2015-026-B
Epoch (UTC) 2015-06-11 03:22:07
Orbit # at Epoch 20
Inclination 0.045
RA of A. Node 208.762
Eccentricity 0.0000110
Argument of Perigee 174.798
Revs per day 1.00272075
Period 23h 56m 05s (1436.8 min)
Semi-major axis 42 165 km
Perigee x Apogee 35 786 x 35 787 km
BStar (drag term) 0.000000000 1/ER
Mean anomaly 208.632
Propagation model SDP4
Element number / age 999 / 0 day(s)
StdMag (MaxMag) / RCS N/A
Diameters N/A
Satellite group N/A

Doctor j
 
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#24 ·
P Smith said:
fire up spectrum analyzers !
Unless the Ku downlink beam will reach far enough north of the border to pick it up., it will have to be those with SAs down south. :)

As this bird's d/l beams are aimed at Mexico, Central America, and parts of the Caribbean.

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#26 ·
P Smith said:
sometimes it possible to get signals from CA or south part of it ;)
Yeah possible;

Just don't know how far or well this new satellite will extend north of the border.

In fact I'm still puzzled by this whole thing. SKY Mexico is (was?) currently served from 58W, presently on IS21 according to Lyngsat.

Yet there is now a new SKY Mex. service at 79W currently being broadcast by IS16 on an interim basis until SKYM-1 becomes operational there. But I only see single LNBF dishes for SKY Mex.

How is this supposed to work? Is 58W being phased out and all SKY Mex. subs. eventually to have thier dishes' repointed to 79W?

Info. on this is hard to come by. But then again I realize it's really not for us here in the US to know about I guess as other than academic interest.

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