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DVB-S vs DVB-S2

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  • pat3
    Board Senior Member
    • Sep 2010
    • 270

    #16
    Re: DVB-S vs DVB-S2

    is it a motorized dish? It needs absolutely perfect adjustment in your location.
    Please push thanks.

    Comment

    • phil76
      Board Senior Member
      • Oct 2012
      • 200

      #17
      Re: DVB-S vs DVB-S2

      Originally posted by rizwan
      Why DVB-S2 is difficult to get as compare to DVB-S from Same satellite and almost same beam ?
      My STB show a lower level signal for DVB-S2 transponders compared to DVB-S ones. Obviously I'm comparing transponders located on the same beam on Hot Bird. In any case I never experienced problems with rain.

      Comment

      • zoran89
        Experienced Board Member
        • Mar 2010
        • 1618

        #18
        Re: DVB-S vs DVB-S2

        All you need is to adjust a dish.
        You cant have problem with Hotbird in Central Europe, no matter of rain. Hotbird have very powerfull beams...

        Comment

        • Satphoenix
          Experienced Board Member
          • Oct 2012
          • 999

          #19
          Re: DVB-S vs DVB-S2

          Originally posted by zoran89
          ...You cant have problem with Hotbird in Central Europe, no matter of rain...
          Sorry, but I have sometimes problems with rain.
          Depending on heavy rain, every signal can be blocked/influenced by the weather.
          If you want to make God laugh, tell him your plans!

          Comment

          • rizwan
            Experienced Board Member
            • Sep 2010
            • 844

            #20
            Re: DVB-S vs DVB-S2

            My opinion, there is still more perfect and sensitive tuners require to tackle these problems
            Vu+ Solo2
            Dream Box 800HD,
            Neotion 3000, Skystar2, PTCL IPTV
            HP LCD W2338h
            Samsung LED 40 C5000

            Comment

            • Mobley3
              Experienced Board Member
              • Jun 2012
              • 722

              #21
              Re: DVB-S vs DVB-S2

              Originally posted by Satphoenix
              Sorry, but I have sometimes problems with rain.
              Depending on heavy rain, every signal can be blocked/influenced by the weather.
              Totally agree with you Satphoenix, heavy rain can wipe out even the best reception, admittedly only for short periods but I have on occasions lost signal on 28E with levels over 90% for both S&Q.If it is an DVBS-2 signal on 13E then the problem can be a lot more severe lasting for much longer periods, due to the less robust signal.

              Regards Mobley3


              mobley3

              Comment

              • herrr
                Experienced Board Member
                • Jan 2012
                • 1081

                #22
                Re: DVB-S vs DVB-S2

                What you say about rain is true, it's Physics.
                At those frequencies it's the same thing that smaller water drops in fog cause to the sight...
                When there are heavy rains on Milan even SKY IT uplinks themselves, with their giant dishes, for some minutes are not able to reach Hotbird with their transmissions...

                Comment

                • zoran89
                  Experienced Board Member
                  • Mar 2010
                  • 1618

                  #23
                  Re: DVB-S vs DVB-S2

                  Yes with realy heavy rain. What happend 1-2 a year.
                  And it depend on size of dish.
                  If you have 80-90cm dish in central EU then you can expect lost of signal maybe 2 times a year, and it will last maybe for 15min.
                  So it isnt much of a problem.

                  Comment

                  • phil76
                    Board Senior Member
                    • Oct 2012
                    • 200

                    #24
                    Re: DVB-S vs DVB-S2

                    To be honest, on HB channels, including HD, I never had problems you are reporting, even with eavy rain! In these wheather condition, the only thing that happen is some occasional image freeze that have a duration less than 1 second. This for me happen both on SD and HD channels.

                    Comment

                    • Satphoenix
                      Experienced Board Member
                      • Oct 2012
                      • 999

                      #25
                      Re: DVB-S vs DVB-S2

                      Originally posted by zoran89
                      Yes with realy heavy rain. What happend 1-2 a year.
                      And it depend on size of dish...
                      In really heavy rain you can have a 3m Dish and it won't help. Too much water above you.
                      The rules of physics make no exception. There's of course no difference between dvb-s and dvb-s2.
                      A bigger dish can only help if you have lower rain.
                      If you want to make God laugh, tell him your plans!

                      Comment

                      • KVF1966
                        Board Senior Member
                        • Dec 2012
                        • 279

                        #26
                        Re: DVB-S vs DVB-S2

                        I assembled multifeed on four satellites (5e, 13e, 19e, 36e), 13th in focus and always experience a problem with signals in heavy rain on all satellites. the laws of physics

                        Comment

                        • zoran89
                          Experienced Board Member
                          • Mar 2010
                          • 1618

                          #27
                          Re: DVB-S vs DVB-S2

                          I said that it can happend that you lose signal in havy rain, but that havy rain happend only few time of the year.

                          I have Total TV legaly and their dish is 90cm with monoblock 16E 19E.
                          On 16E I lose signal on havy rain maybe 5-10 times a year, because 16E is very weak sattelite, but on 19E I lose signal 1-2 times a year.


                          You obviusly dont know how blob of rain effect on signal, so you allways say physics.
                          It effect signal, but not that much how all of you whant to say. and only realy havy rain can block signal from strong sattelite if you have 80+ cm dish.

                          If that is true then in areas close to ecvator you wouldnt evan have sattelite dishs, because there is havy rain every day....

                          Comment

                          • herrr
                            Experienced Board Member
                            • Jan 2012
                            • 1081

                            #28
                            Re: DVB-S vs DVB-S2

                            Have an interesting reading about effects of rain on microwaves in equatorial countries...
                            _https://www.unilorin.edu.ng/publications/adimula/Effect%20of%20Rain%20on%20Microwave.pdf

                            Comment

                            • phil76
                              Board Senior Member
                              • Oct 2012
                              • 200

                              #29
                              Re: DVB-S vs DVB-S2

                              Originally posted by zoran89
                              I said that it can happend that you lose signal in havy rain, but that havy rain happend only few time of the year.
                              I dont know what you mean with "heavy rain"...peraphs a typhoon or a tornado? I repeat, also when it raining in heavy mode, I never had the "no signal" on the screen. At most I have some image freezes.

                              The only thing that cause "no signal" appears on my screen is snow...when it snows for some hours, no chance to view anything...

                              Comment

                              • zoran89
                                Experienced Board Member
                                • Mar 2010
                                • 1618

                                #30
                                Re: DVB-S vs DVB-S2

                                That is exactly what I mean. It must be almost typhoon to lose signal from that powerfull sattelite.

                                No matter what modulation it is....

                                Comment

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