Echostar 14 119W transition information

[nelson61]

Thank you for answering. My regin is between the yellow line and red line, but very close to yellow. If using 33-inch dish, can I receive good singal? Thanks

Excellent change of working well with your 33.

 

[womboughjj]

what is that one channel that is listed for albany, ga? If anyone knows.

 

[barfo]

Are the color contours for E14 and E7 directly comparable? For example, would the signal be about the same if one lived exactly on the yellow contour line of each satellite? Also, the E14 footprint seems to extend quite a bit further northwards but less eastward than the E7 footprint. Is there any logic to this change?

 

[digiblur]

what is that one channel that is listed for albany, ga? If anyone knows.

Not sure. It justs lists it on the migration from the E7 beams to E14 beams.

And FYi, the list above is not complete but I have not seen the entire list yet.

 

[nelson61]

Are the color contours for E14 and E7 directly comparable? For example, would the signal be about the same if one lived exactly on the yellow contour line of each satellite? Also, the E14 footprint seems to extend quite a bit further northwards but less eastward than the E7 footprint. Is there any logic to this change?

no and no

 

[MexicoPete]

Are the color contours for E14 and E7 directly comparable? For example, would the signal be about the same if one lived exactly on the yellow contour line of each satellite? Also, the E14 footprint seems to extend quite a bit further northwards but less eastward than the E7 footprint. Is there any logic to this change?

They are very different. On E14. they're better focused on the US with much less bleed-over to my part of Mexico and other parts of countries outside of the US

Sadly that makes sense. If you need a certain amount of signal strength over all of the US and less bleedover into other countries, like Mexico, and you can do it, you are using less energy. Heck in the old days, you know the 80s the signals were so strong that they reached almost the equator.

Now by only having good signal strength in the US with less bleedover into other countries one needs less power and the satellite can last longer because it uses less power (Well maybe I should say it needs fewer solar panels or less energy per unit of time) . Sadly that means when I travel south for the winter to central Mexico, I need a bigger dish.....

Gosh I hope I'm wrong and there is more bleedover reaching as far south as 20 latitude, where I live in the winter. I would hate to have to continue to pay for DISH and get fewer channels than I'm paying for. At least the HD CONUS channels on 129 W are viewable with a large dish (2.4 meters or larger) along the shores of Lake Chapala.

 

[barfo]

Well, OK, you did answer my question, so the color contours are not directly comparable between the two footprint maps. But perhaps I wasn't clear. I realize that the shape and location of the contours is different, but what I was wondering was if the meaning (dB?) of each color was the same. If not, would one receive a stronger signal if on a E14 yellow contour as compared to an E7 yellow?

 

[digiblur]

The colors are different. If I remember when I checked in my area I had like 55dbw and on E14 I had 60dbw for the same colors. I believe if you zoom in to the maps you can see the dbw numbers.

 

[barfo]

Yes, I see that now, zoom in and click and use the hand tool to get the dbw. Thanks.

 

[nelson61]

Yes, I see that now, zoom in and click and use the hand tool to get the dbw. Thanks.

The protocal used in the filings bases everything on the peak (beam center dbw value). They then provide offset values in decreasing strength relative to the peak value: -2,-4,-6,-8 etc for the various contours.

The peak value can vary dramatically. This is why you have to look at the absolute numbers for each satellite.

 

[Rafaelccs]

Hello, does anyone have info of what will E* VII be used for after transition?
Back up for 119W? back for other orbital slot? or moved to 61.5 W?

Thanks in advance.

 

[rajmarie]

Hello, does anyone have info of what will E* VII be used for after transition?
Back up for 119W? back for other orbital slot? or moved to 61.5 W?

Thanks in advance.

Dish havent mentioned anything abt it.....but expecting to be a backup for E14 at the same location.....considering that E15 is going to be lauching soon.

 

[digiblur]

61.5 already has a backup there. I suspect they will try to keep for a western arc backup since they do not have one now. That could change though if the FCC forces their hand on 148 needing a bird.

 

[kstuart]

61.5 already has a backup there. I suspect they will try to keep for a western arc backup since they do not have one now. That could change though if the FCC forces their hand on 148 needing a bird.

E*7 has working spot beams at 119, it would make a lot of sense to keep it there, and use CONUS satellites at places like 148.

 

[kstuart]

Sacramento HD's have major drop out problems on 110 TP 18. This is a known issue that's out of Dish's control. It'd be nice if this could get resolved somehow.

That is not anything that will be affected by this change of satellite.

 

[rdavidowski]

Hi

Anyone care to coment on Why Echostar 14 has already passed it's destination spot and altitud is way low also. Right now at 8:20am EST the sat is located at 117.41 degrees and 22169 miles above earth. In contrast Echostar 7 is at 118.82 degrees and 22237 miles above earth. Can somebody explain the process of how to get an object in the correct orbital slot (The Box).

Thanks

 

[HDRoberts]

Hi

Anyone care to coment on Why Echostar 14 has already passed it's destination spot and altitud is way low also. Right now at 8:20am EST the sat is located at 117.41 degrees and 22169 miles above earth. In contrast Echostar 7 is at 118.82 degrees and 22237 miles above earth. Can somebody explain the process of how to get an object in the correct orbital slot (The Box).

Thanks

Old tracking data. There is no such thing as live satellite tracking, unless you work at NORAD.

 

[Dah-Henny]

An updated TLE hasn't been given yet. e14 is not really at 117.

 

[digiblur]

E*7 has working spot beams at 119, it would make a lot of sense to keep it there, and use CONUS satellites at places like 148.

Yes, but E-7 will be the only bird free coming up... and if the FCC says you better put something at 148 or lose it, then they will have no choice to slide it over there until E15 frees up something.

 

[Rafaelccs]

Hi

Anyone care to coment on Why Echostar 14 has already passed it's destination spot and altitud is way low also. Right now at 8:20am EST the sat is located at 117.41 degrees and 22169 miles above earth. In contrast Echostar 7 is at 118.82 degrees and 22237 miles above earth. Can somebody explain the process of how to get an object in the correct orbital slot (The Box).

Thanks

Hello. there's a a lot of factors in this movement to stationkeep, I will just post a few things. Among the most relevant extracted from Wikkipedia and just to give you an idea of what they are dealing with:

Geostationary orbits can be achieved only very close to the ring 35,786 km (22,236 mi) high, directly above the equator. This equates to an orbital velocity of 3.07 km/s (1.91 mi/s) or a period of 1436 minutes, which equates to almost exactly one sidereal day or 23.934461223 hours.

So the bird is Geo and traviling @ a speed of 1.91 miles per second, also, it has licence to operate @ 119W and also there are several birds there:

Anik F3 -118.71
E* VII -118.82
DTV 7S -119.07​

Consider these natural movements:

A geostationary orbit occurs when an object (satellite) is placed approximately 37,000 km (22,300 miles) above the Earth's equator with the characteristic that, from a fixed observation point on the Earth's surface, it appears motionless. A satellite is in an inclined orbit when its orbital plane is tipped some number of degrees from the horizontal defined by the equator. In the case of an inclined geosynchronous orbit, although the satellite remains geosynchronous (that is, completing one orbit around the earth every 24 hours), it is no longer geostationary. From a fixed observation point on Earth, it would appear to trace out a small ellipse as the gravitational effects of other stellar bodies (Sun & Moon) exhibit influence over the satellite, as the effect accumulates over time the trace becomes a figure-eight with lobes oriented north-southward once every sidereal day.
A geostationary orbit is not stable. It takes regular manoeuvres to actively counteract the above gravitational forces. The majority of the fuel, typically hydrazine is spent for this purpose. Otherwise the satellite experiences a change in the inclination over time. At the end of the satellite's lifetime, when fuel approaches depletion, satellite operators may decide on omitting inclination manoeuvres and only control eccentricity. This could prolong the life-time of the satellite as it consumes less fuel over time. On the other hand the satellite can only be used by ground antennae capable of following above mentioned north-south movement, Satellite Tracking earth stations. Before the fuel comes to an end, satellites can be moved to a graveyard orbit to keep the geostationary altitude free for subsequent missions.

Other interesting article:

From:

http://broadcastengineering.com/infrastructure/satellite-tvro-part-1-0813/

Communication satellites maintain their position within a very tight box of ±0.05 degrees to ±0.10 degrees around their assigned position. This works out to a box about 90mi on each side. Due to gravitational pull from the sun and moon, satellites tend to drift away from their assigned orbital slots. To correct this, thrusters on the satellites are used to maintain their position west and east (longitude) as well as north and south (inclination). One of the main reasons a satellite reaches its end of life is that it runs low on fuel for the thrusters.
Some satellites, as they near the end of their operational lifetime, are allowed to enter into an inclined geosynchronous (not geostationary) orbit to save on fuel. When an operator places a satellite in an inclined orbit, it maintains its normal east and west position, but uses very little fuel for north and south corrections. This lets it oscillate, within a 24-hour window, above and below the equator during its orbit, making a figure eight.

Controlling satellites

The responsibility of keeping satellites within their orbital slots falls on the satellite operators such as SES Global, PanAmSat and Loral Space Systems. These companies actually monitor and control the communication satellites in space. First, the satellite is built and then launched into space near its orbital slot. It is run through tests to ensure it is working as expected, and then it’s maneuvered into its assigned slot using thrusters.
It may sound easy to keep a satellite in place, but it becomes much more challenging when you have to keep two or more satellites within the same orbital slot and not hit each other. This is what is happening when you see two or more satellite names with the same latitude, such as 101 degrees west where AMC 2 and AMC 4 both reside, along with DirecTV 4S. All three satellites perform a sort of dance that keeps them within the box but not too close as to collide or block each other’s signals. The satellites can share an orbital slot but not the same frequencies.