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DirecTV Seattle area: Zero signal for Xponders 4,12,20,26



 
 
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  #1  
Old August 27th 04, 12:36 AM
Jack Ak
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Default DirecTV Seattle area: Zero signal for Xponders 4,12,20,26


"beldar" wrote in message . 130...
Anybody in the Seattle area having similar results. I'm trying to
figure out if this is with my system or on DTV's end. All the other
xponders are fine with readings in the 80s.

Since locals come in on xponders 26 and 27 I am getting sporatic
freezing and loss of signal for the local channels.

I called DTV and they hadn't received any other complaints. However,
with the symtoms I described, even they are suspecting it's probably a
DTV problem.

My hardware is a Hughes GCEBOA with a Sony dish with single feedhorn
pointed at 101°


Transponders 4, 12, 18, 20, 26, and 28 are the spot beam transponders.
Not all will be available in Seattle. Seattle locals are on transponder
numbers 18 and 28. The signal strengths on those two transponders
should be higher than any of the other transponder numbers.




  #2  
Old August 27th 04, 01:30 AM
KevinXKitchen
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Transponders 4, 12, 18, 20, 26, and 28 are the spot beam transponders.
Not all will be available in Seattle. Seattle locals are on transponder
numbers 18 and 28. The signal strengths on those two transponders
should be higher than any of the other transponder numbers.


The spot beam transponders are not always higher than the CONUS ones are. It
depends on where you live with respect to the beams center and width.
  #3  
Old August 27th 04, 04:44 AM
Jack Ak
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"KevinXKitchen" wrote in message ...
Transponders 4, 12, 18, 20, 26, and 28 are the spot beam transponders.
Not all will be available in Seattle. Seattle locals are on transponder
numbers 18 and 28. The signal strengths on those two transponders
should be higher than any of the other transponder numbers.


The spot beam transponders are not always higher than the CONUS ones are. It
depends on where you live with respect to the beams center and width.


That may be true for Dish Network. I've never seen a report of spot beam
transponder strengths in the covered market being lower than the conus beam
strengths for DirecTV.

If you are in the spot beam coverage area for a DirecTV local market, the
spot beam transponder strengths for that market will be higher than those
for any other market or the national beam. Adjacent local market spot beam
signals may have lower (or zero) signal strengths.

  #4  
Old August 28th 04, 02:20 AM
KevinXKitchen
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If you are in the spot beam coverage area for a DirecTV local market, the
spot beam transponder strengths for that market will be higher than those
for any other market or the national beam. Adjacent local market spot beam
signals may have lower (or zero) signal strengths.


Suppose then that DircTV has a spot beam and it shines a signal for locals on 3
cities- let's say St Louis, Kansas City and Wichita. Now if that beam is
centered on Kansas City, will the signal not drop to lower levels over the
other 2 cities?
  #6  
Old August 28th 04, 03:22 AM
Jack Ak
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"KevinXKitchen" wrote in message ...
If you are in the spot beam coverage area for a DirecTV local market, the
spot beam transponder strengths for that market will be higher than those
for any other market or the national beam. Adjacent local market spot beam
signals may have lower (or zero) signal strengths.


Suppose then that DircTV has a spot beam and it shines a signal for locals on 3
cities- let's say St Louis, Kansas City and Wichita. Now if that beam is
centered on Kansas City, will the signal not drop to lower levels over the
other 2 cities?


For one point, St Louis, Kansas City, and Wichita do not share a spot beam.

There is no reason that a spot beam must deliver decreasing signal levels
at various distances from the center. The national beams have fairly
consistent levels across the continent. Spot beams cast uniform signal levels
across covered areas, but signal levels drop off outside the service areas.

  #7  
Old August 28th 04, 05:13 PM
KevinXKitchen
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Not necessarily. It's possible to engineer the energy density in the
beam so that it linearly covers the desired area, and drops off
sharply at the edges. And every generation of sats improves on this
capability. Beams are no longer just circular spots.


I was not aware of that. I often wondered why the spot beams had spill over of
up to a few hundred miles or even more.
  #8  
Old August 28th 04, 05:18 PM
KevinXKitchen
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For one point, St Louis, Kansas City, and Wichita do not share a spot beam.

I just used that as an example because I really don't know DirecTV's spot beam
schemes. I do know that the spot beam for Dish that serves Birmingham covers
Atlanta rather well as does the one that serves South Carolina. But it appears
weaker on my signal meter than the CONUS transponders do.

There is no reason that a spot beam must deliver decreasing signal levels
at various distances from the center. The national beams have fairly
consistent levels across the continent. Spot beams cast uniform signal
levels
across covered areas, but signal


I didn't know this. I always figured that the beams would deliever the
strongest signal to the area right below where the reside in the sky (I guess
that would be southern Texas) and it would fall off from there outward finally
dying when it hit the Earth's curves.
 




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