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TWINHAN DVB-S PCI Receiver Users can discuss this up and coming PCI card that can be used to receive, record, and play satellite TV using your PC

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Old 04-16-2003, 06:48 AM
stal4 stal4 is offline
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Dish Offset Angle? w/ HH100 and receiver FORMULA

I am in San Antonio, Texas 78228
LA 29.42 LO 98.5
My system: a Fortec 786v3, with HH100 positioner with 36" dish.
Using Sadoun's formula I get the
positioner angle at 29.42,
dish elevation at 25.12
LNBF of -2.7 or Zeor, I need to recheck again.
Offset dish LNB angle????

MY QUESTION IS: do I have to consider the LNB ANGLE OFFSET OF THE ANTENNA as stated in the specs (it is not dead center with the dish), which in this model is 24.62 degrees?
If I do then where would I use this degrees offset in my settings. The positioner, the dish or do I have to consider it, I would think so?

I may power up today, since most of the time since I recd the system was installing the mast on a 20° sloped roof until yesterday. Finally went to the tire/muffler shop and had them make me a perfect angle for a permanent mount 2" diameter and with a little drilling I set it up. Also added turn buckles to the positioner and dish, this will greatly come in handy. Took some time to add, but well worth it later on.
thanks, art
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Old 04-16-2003, 07:43 PM
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Sadoun Sadoun is offline
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On a motorized system the LNBF is straight up/down (no tilt). The elevation angle calculated is what you should use only on the dish. In your case 25*

Make sure everything is pointing TRUE SOUTH. Use the DiSEqC 1.3 comand to find the satellite. When you enter your LA/LO in the receiver make sure your LO value is followed by W not E. Use the Page UP/Down button on the remote to change the E to W.

Use USALS to go to the satellite your want to receive channels from (i.e. Telstar 5). Use a live TP (i.e. 12152) to check for signal and quality. If your dish setup is accurate, you will get a lock right away. If you don't get a lock when the motor stops, try adjusting the azimuth for the motor slightly.
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Old 04-17-2003, 07:49 AM
stal4 stal4 is offline
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CORRECTION TO THE QUESTION BAR ANGLE OFFSET FOR DISH

After reading Sadounds response I realized I didnt ask the question quite correctly, yet that info is good also. My question was that : Do I have to consider the dish angle, not just the lnb. I mean the ANGLE THAT THE BAR HOLDING THE LNB IS AT? In the dish SPECS it gives an ANGLE OFFSET of this bar or the relation as to where the LNB is positioned in respecte to the center of the dish. It says that the OFFSET ANGLE OF THIS BAR IS 24.62°, So I dont know if this had to be included somehow in the actual settings for the motor angle and the dish angle adjustments. I find out soon.
THANKS ART
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Old 04-17-2003, 10:41 AM
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Art

No you don't need to use this angle in any calculations. Just use the elevation scale on the back of the dish. :lol:
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