esto
Member
- Joined
- Mar 15, 2011
- Messages
- 89
- Reaction score
- 14
- Points
- 8
- Age
- 54
- My Satellite Setup
- Kathrein uas 912
- My Location
- CE
Currently I have a 80cm dish, and generally it does fine, but when it rains I notice some HD channels start breaking up. DVB-S uses QPSK, and DVB-S2 doubles the modulation and uses 8PSK. So I understand it's more sensitive to rain, obstacles, etc. and needs a higher receive level than standard DVB-S signals.
Is there any kind of reference chart available that shows the sensitivity differences, and/or dish size recommendation differences? eg. "If your RSL is 48dBw you need a 60cm dish for DVB-S signals, or 80cm dish for DVB-S2 signals."
Also, when 4k comes to satellite (DVB-S2X), modulation rates will have to increase again, I suppose to 16PSK (altho Wikipedia mentions only 64PSK minimum?) How realistic is this going to be in terms of dish size? Eg. right now I need an 80cm dish for DVB-S, if I want DVB-S2 I need to upgrade to 100cm, and with DVB-S2X I will need, what a 1.5m dish I guess? I don't see DVB-S2X being too realistic for anyone who doesn't have a 100% clear view of the sky and living in a place where it never rains.
Is there any kind of reference chart available that shows the sensitivity differences, and/or dish size recommendation differences? eg. "If your RSL is 48dBw you need a 60cm dish for DVB-S signals, or 80cm dish for DVB-S2 signals."
Also, when 4k comes to satellite (DVB-S2X), modulation rates will have to increase again, I suppose to 16PSK (altho Wikipedia mentions only 64PSK minimum?) How realistic is this going to be in terms of dish size? Eg. right now I need an 80cm dish for DVB-S, if I want DVB-S2 I need to upgrade to 100cm, and with DVB-S2X I will need, what a 1.5m dish I guess? I don't see DVB-S2X being too realistic for anyone who doesn't have a 100% clear view of the sky and living in a place where it never rains.