pjgregory
Member
- Joined
- May 6, 2008
- Messages
- 46
- Reaction score
- 1
- Points
- 0
- Age
- 76
- My Satellite Setup
-
Humax FoxSat HDR,
Prodeline 3.7m dish,
Invacom C120 Quad LNB,
50m Hirschmann KOKA 799/500 Cable,
HD Home Theater System
- My Location
- Montepulciano, Italy
I am a new member on this forum, but I have spent the last week in reading a lot of posts about installing Big Dishes. Like may others, I am trying to get Astra 2D for BBC.
Living in central Italy (80km south of Florence), I know it is not easy. My exiting 2.4m IRTE dish is not working. While I have now bought the parts recomended here (Pace 2600 digibox, Invacom Quad C120 LNB etc., I am facing up to the reality of having to install a 3.1m or even 3.8m dish to make it work. Assuming I can find out where to buy it, how to transport it and how to assemble it to the accuracy required, there is still the problem of aligning such a monster.
Setting the feedhorn for the correct focal length and pointing it exactly at the center of the dish should only need to be done once during assembly. Pointing the dish at Astra 2D can be done from the AZ/EL screws at the back. But what about the skew of the LNB. It is only through reading post here that I have come to realise just how important this can be. One contributor (Snap) has talked of sub degree adjustments. How do you do this?
Well there is one photgraph of a guy standing inside the dish. I could hire a cherry picker and operator for a few days or build some sort of mobile scaffolding gantry.
Can you buy, or has anyone tried to make a motorized LNB mount that would allow you to rotate the LNB electically to sub-degree accuracy? Although it first sight it might appear total overkill, the other options for a non professional installer might just be worse.
PJG
Living in central Italy (80km south of Florence), I know it is not easy. My exiting 2.4m IRTE dish is not working. While I have now bought the parts recomended here (Pace 2600 digibox, Invacom Quad C120 LNB etc., I am facing up to the reality of having to install a 3.1m or even 3.8m dish to make it work. Assuming I can find out where to buy it, how to transport it and how to assemble it to the accuracy required, there is still the problem of aligning such a monster.
Setting the feedhorn for the correct focal length and pointing it exactly at the center of the dish should only need to be done once during assembly. Pointing the dish at Astra 2D can be done from the AZ/EL screws at the back. But what about the skew of the LNB. It is only through reading post here that I have come to realise just how important this can be. One contributor (Snap) has talked of sub degree adjustments. How do you do this?
Well there is one photgraph of a guy standing inside the dish. I could hire a cherry picker and operator for a few days or build some sort of mobile scaffolding gantry.
Can you buy, or has anyone tried to make a motorized LNB mount that would allow you to rotate the LNB electically to sub-degree accuracy? Although it first sight it might appear total overkill, the other options for a non professional installer might just be worse.
PJG