zacojam
join:2003-01-13
Massapequa, NY | reply to Mark_H
Re: Does anyone know about the sat?
Now the question really is...when do they sell off their cable TV business? I don't think the FCC and SEC will allow them to be in both businesses. |
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Bichon
Premium,MVM
join:2002-10-10
Freehold, NJ
| reply to SuperBowl
said by SuperBowl  :
I have one more question for Bichon or anyone who may know.
My southeast is clear for trees, but the house next to me in the southeast is fairly tall. Will the house block the signal similar to trees ? I know trees can block the signal, but I am not sure about houses.
Yes, a house will block the signal. But an elevation of 41 is pretty high in the sky. Unless your house and your neighbors are right on top of one another, you should look right over his house. Especially if you mount the dish under an eave, which is generally the most aesthetically pleasing place to put them. Remember that dishes actually "look" much higher than most people think -- not at a right angle to their profile. Use a protractor and compass to check. |
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amenite
The Soylent - It's People
Premium
join:2002-11-21
Ridgewood, NJ
clubs:
 ·Verizon Online DSL
| reply to zacojam
said by zacojam :
Now the question really is...when do they sell off their cable TV business? I don't think the FCC and SEC will allow them to be in both businesses.
An even better question is will we let them off the hook for all the dish bashing they've been doing over the past few years. The marketing will be creative I'm sure.
--
Time is an abstract concept invented by carbon based life forms to monitor their constant decay.-Thunderclese |
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Alcohol
Premium
join:2003-05-26
Somerset, NJ
| reply to Mark_H
estimating the eventual cost at $2 billion
At least initially, the limited transmission capacity of the single satellite will prevent Rainbow DBS from transmitting local broadcast stations in most television markets, Cablevision acknowledged in an FCC filing. That means no CBS, NBC, ABC or Fox.
 |
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tonyfer2
join:2002-08-14
Elizabeth, NJ
clubs: |  but did cv not sell off sat rainbow |
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whizkid3
Premium,MVM
join:2002-02-21
Queens, NY
 ·Earthlink Cable Mo..
| reply to Mark_H
quote:
techtv and they said CV's sat can broadcast up to 460 standard definition channels
I'm sure TechTV was referring to the entire satellite, not the 11 transponders that CV will own, and broadcast from. At first, the other transponders will probably be leased to other users to raise money. (These could be used for anything from video, international telephony, government communications, data, etc.)
There are 36 transponders on this bird. If we do some math, this works out to about 12 or 12 standard definition digital television channels per transponder, which sounds about right. This would give CV 140 standard definition channels; not too shabby, but certainly not 'eclipsing' DirecTV or Dish.
quote:
That means no CBS, NBC, ABC or Fox
I doubt it. They could possible provide regional network feeds. However, since the satellite was built with 22 programmable spot beams, you can bet CV will make extensive use of these to provide local service. The spot beams on this satellite are probably made using very expensive 'beam steering' technology - this was not just a frill added, without intended plans to use it. Could be they will wait until things become profitable, and then use some of their leased transponders to provide local service. |
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roadrot
join:2001-12-01
Farmingdale, NY
| reply to Mark_H
satellite launched- Cablevision- has already requested a rate increase with the FCC..Claiming due to HBO and Showtime increases that need to be passed onto customers.
A Cablevision - Satellite spokeperson stated even at $129.95 a month it is still a great value......
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whizkid3
Premium,MVM
join:2002-02-21
Queens, NY |  reply to Mark_H
They are out of control. |
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rspanbauer
Premium,VIP
join:2002-03-01
Woodbury, NY
| reply to whizkid3
Actually, the satellite has "spot beam" technology, which
allows reuse of the transponder frequencies. They are
configurable to either CONUS or spot beam mode. As
for bandwidth vs channels, remember that there are
advanced codecs such as H.264 or WM9 that pack more
channels per bit/sec. Rick |
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Bichon
Premium,MVM
join:2002-10-10
Freehold, NJ
| reply to Mark_H
I'm certainly not a codec or compression expert, but from what I've read, those new codecs work wonders on low quality video like streaming Internet video, but as your requirements approach broadcast quality, their compression efficiency advantage relative to MPEG2 drops off quickly.
[text was edited by author 2003-07-19 17:19:54] |
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whizkid3
Premium,MVM
join:2002-02-21
Queens, NY
·Earthlink Cable Mo..
| reply to Mark_H
quote:
spot beam" technology, which
allows reuse of the transponder frequencies
Sounds good, but I am not sure if this is true. Each segment of transponder frequency can only be used by each of two polarized signals. This has nothing to do with spot beams. In the case of CVs bird, I am sure that the spot beams are downlink only. Uplinked signals can be directed to the spot beams for downlink. This does not add any reuse (increased capacity) to the satellite. Unless, there is an expanded uplink spectrum. Then several transponders could down-convert the signals to the same frequencies, and downlink them on different spot beams. This might be the case - I will check it out.
In theory, a satellite could have duplicate transponders on the same downlink frequency; and by employing the use of spot beam or narrow antennas (for both uplink and downlink); OR by having a larger uplink spectrum; could actually downlink to two or more different locations on the same frequency. This is reuse using spot beams.
I notice that this sat has 36 transponders. Other satellites using the Lockheed Martin A2100AX bus have had as little as 24, and as much as 72. I will check out the bus configuration (if available) and check out its design.
[text was edited by author 2003-07-19 17:15:55] |
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whizkid3
Premium,MVM
join:2002-02-21
Queens, NY
·Earthlink Cable Mo..
| reply to Mark_H
I tried to find out more about the bus configuration of CV's new satellite. Specifically the bus configuration. Apparently, there is a lot of tight-lipped secrecy about this. This is all I could find:
- A2100AX bus
- 36 active Ku-band transponders (bandwidth?)
- 22 programmable spot beams (have seen 26 reported)
- 18 years expected lifetime
My guess is that it is similar in design to the Nimiq2 satellite, also a LM A2100AX bus. There have been some 24 different satellites built with this bus, albeit in differing transponder configurations. (See »www.skyrocket.de/space/space.html for more info.)
My guess is that the transponders are 24MHz in bandwidth. For each polarization, that means a total of 24MHz x 18 transponders = 432 MHz of usable bandwidth. With the guard bands between transponders, this should work out to a 500 Mhz band. This is exactly the band alloted for North American FSS (fixed satellite service) in the Ku band - 14. to 14.5 Ghz uplink, and either the 11.7 - 12.2 GHz downlink band or the 12.2 - 12.7 GHz broadcasting downlink band.
I don't see any added capacity for transponder reuse using spot beams; although in no does this mean that the spot beams will not be used for locals. If I am correct, the spot beams will simply subtract bandwidth from the total of 432 MHz.
rspanbauer, please correct me if I'm wrong. Please also fill us in on anything that you might know about the payload and bus configuration on this satellite. We are aching to know. |
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rspanbauer
Premium,VIP
join:2002-03-01
Woodbury, NY | reply to Bichon
Speaking as someone who has tested them, real life, don't
believe everything you read  Rick |
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rspanbauer
Premium,VIP
join:2002-03-01
Woodbury, NY | reply to whizkid3
Spot beams have discrete uplinks in the spot coverage
area, ie both up/down link frequencies are reused..
I work on the sat project, BTW. Rick |
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rspanbauer
Premium,VIP
join:2002-03-01
Woodbury, NY
| reply to whizkid3
The configuration of CONUS vs spots is configurable in
orbit. Each spot would need its own uplink facility in the
spot. Modulation waveform is 8PSK. Beyond that, I'm not
sure what else has been released publicly, so I'll end
there.. Rick
[text was edited by author 2003-07-19 20:16:25] |
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whizkid3
Premium,MVM
join:2002-02-21
Queens, NY
·Earthlink Cable Mo..
| reply to Mark_H
quote:
Each spot would need its own uplink facility in the
spot.
Ah-ha. I got it. This is frequency reuse. Apparently they will dedicate some transponder space for each spot beam, operating on the same frequencies. They will have to locate a dish in each area of spot beam coverage, to uplink the locals. |
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Bobcat
Premium
join:2001-02-04
Bedminster, NJ | reply to rspanbauer
How do they do it? Phased array? |
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whizkid3
Premium,MVM
join:2002-02-21
Queens, NY
·Earthlink Cable Mo..
| reply to Mark_H
Using phased arrays as a beam-steering method (for the spot beams) is typically the way this is done today. This technology was developed for the military for anti-jamming and security purposes (as well as for frequency reuse).
In the old days, they used to have different feed-horns aimed at different spots to the downlink antenna, to achieve the spot beams. This was very common to have conus coverage over the USA, with spot beams over Hawaii and Alaska. Talk about funny looking dishes! |
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batterup
I Can Not Tell A Lie.
Premium
join:2003-02-06
Netcong, NJ
clubs:
·Verizon Online DSL
| said by whizkid3 :
Using phased arrays as a beam-steering method (for the spot beams) is typically the way this is done today. This technology was developed for the military ....
Does all this mean that I will have to get thicker aluminum to place in my hat? |
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CChoi83
join:2002-01-03
Manhasset, NY
| reply to Mark_H
Wow, talk about CV out for world domination in the telecommunications industry. I don't blame them, they're business men and I'm a business man. Do whatever it takes to meet those quarterly earnings.
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It's rarely a question of need, it's a question of want. |
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