Steve Stras
Member
- Joined
- Sep 14, 2011
- Messages
- 51
- Reaction score
- 11
- Points
- 8
- Age
- 57
- My Satellite Setup
- W2 astra
- My Location
- Strasbourg
Hello everyone
I have a question regarding offset dishes. While I was in the UK over Christmas I installed a dish and decoder for my dad so he can watch saturday afternoon football, the system is Total TV pointing at Eutelsat W3C. My mother is particuler sensitive (difficult) about large sat dishes on the house so my dad bought a cheap 65cm model. Once it stopped raining (which I think was just 1 day during the week I was there) I installed the dish and pointed it at W3C without problems using a meter.
But, the dish simply isn't big enough to provide any insurance against rain fade, a bit of drizzle sees everything on the Europe A spot beam disappear along with HD channels from the B spot, the SD channels are ok though. They are located about 30 miles north of London.
My parents are now in Australia for a couple of months so my dad asked me if anything could be done while he's away without upsetting my mother too much by installing a large dish (anything greater than 65-70 is too large apparently)
I read about offset dishes, which from what I understand give a greater gain because the LNB arm is not blocking part of the signal. So, I thought I would buy Gibertini OP 65, which is an offset dish, I can pick this up for about €40 here. This model is actually 71.5cm x 67cm as opposed to 60x65 for the existing dish. I'm not really sure how to caluclate the surface area of a dish as they aren't round but the Gibertini has to have an increased surfaced area approaching 20%.
Therefore, is 20% more steel on an offset dish (with an invacom lnb)going to give me going to give me a significant increase in performance ?
I have a question regarding offset dishes. While I was in the UK over Christmas I installed a dish and decoder for my dad so he can watch saturday afternoon football, the system is Total TV pointing at Eutelsat W3C. My mother is particuler sensitive (difficult) about large sat dishes on the house so my dad bought a cheap 65cm model. Once it stopped raining (which I think was just 1 day during the week I was there) I installed the dish and pointed it at W3C without problems using a meter.
But, the dish simply isn't big enough to provide any insurance against rain fade, a bit of drizzle sees everything on the Europe A spot beam disappear along with HD channels from the B spot, the SD channels are ok though. They are located about 30 miles north of London.
My parents are now in Australia for a couple of months so my dad asked me if anything could be done while he's away without upsetting my mother too much by installing a large dish (anything greater than 65-70 is too large apparently)
I read about offset dishes, which from what I understand give a greater gain because the LNB arm is not blocking part of the signal. So, I thought I would buy Gibertini OP 65, which is an offset dish, I can pick this up for about €40 here. This model is actually 71.5cm x 67cm as opposed to 60x65 for the existing dish. I'm not really sure how to caluclate the surface area of a dish as they aren't round but the Gibertini has to have an increased surfaced area approaching 20%.
Therefore, is 20% more steel on an offset dish (with an invacom lnb)going to give me going to give me a significant increase in performance ?