Jump to content

Jako

Members
  • Posts

    394
  • Joined

  • Last visited

Posts posted by Jako

  1. No, the bird is still at 43.5 east. No testsignals have been observed for a week now and testing lasted a week longer than expected. Maybe they are testing Ka frequencies or there is a problem. This is all speculation as there is no official info available.

    'Live' tracking of astra2e here

    It is not really 'live'. The position of orbiting objects is updated by visual confirmation every 24/48 hrs, excluding weekends and bad weather, and then calculated. So when you see it has started moving, is has already been moving for at least 24 hours and later you will see it 'overshoot' the desired position, because the software will also miss the satellite hitting the breaks.

  2. Yes, according to the specs.

    Never tried one myself, but the improved frequency stability (Hohe Frequenzstabilität) due to the PLL should help especially with receiving  8PSK transponders.

    edit:

    If you can read German there is a testreport here (pdf). They claim the Inverto black ultra as 'winner', but the octagon best suited for 'weak satellite positions' because of the 'near perfect curve' due to the high stability.

  3. Yes, I took the frequency from Kingofsat. The last digit's accuracy should be irrelevant though as the tuner will try to tune in to the nearest frequency it can find. Do not forget that the tuner does not even receive this frequency at all, but the downmixed frequency. Downmixing is done by the LNB's local oscillator and the frequency of this L.O. will also be a little off if it is not an LNB with PLL (phase locked loop).

     Nothing is what it seems...[:)]

    P.S.

    LNB's with PLL are new on the consumer market (price going down) and might just be what is necessary to improve reception in fringe area's. If you can find one-give it a try.

  4. No, that would make reception weaker everywhere, including in the UK and that is not the case. Au contraire, on my location the signal quality goes up at night. That makes more sense as the earth blocks that big source of noise and warmth  (the sun).   It is an atmospheric phenomenon only experienced in fringe areas where the already low energy gets more or less dispersed. Without help of the atmosphere the signal would probably always be lower  in the affected areas.

    The effect of depleting batteries and degrading solar panels does exist on older satellites, but is compensated for by simply using less transponders.

  5. For Open-Linux receivers (Dreambox, Xtrend, Vu+) there is a smartphone app you can use that shows (and speaks) the signal quality and strength of the receiver. Very handy and at no cost. Only the signal quality is important, always go for maximum quality and not for maximum strength.

    20 meter good quality cable should be no problem, but I it is not advisable nor imho possible to put the innards of one lnb into another.

  6. Not much difference between these channels, same bitrate and FEC. But 4Seven has a vertical polarity and is higher in the low frequency band. Assuming skew and lnb quality are OK, the only questionmark is the quality of the cable. The attenuation of a cable goes up with the frequency. How long is the cable?

    No idea about the sensitivity of the Amstrad tuner, but you definitely need a brand new HD receiver with twin tuner and recording capability.[geek]
  7. Twice a year , in spring and fall, there is a short period when the sun is positioned exactly behind the satellite. That is the case this week. As the sun passes behind the satellite the noise level increases and because the signal from the satellite remains the same, the signal-to-noise ratio deteriorates and the picture might disappear. Not a big problem as it only lasts for around 10-15 minutes, depending on the dish size.

    But this effect can be made to use as any object situated between the satellite and the dish will cast a shadow over the dish during this period.

    A cheap and easy way to check whether that tree has grown too big...[:)]

    The time is around midday, but obviously depends on the exact location. An online sun outage calculator can be used to calculate the exact time for any satellite and ground location :http://www.satellite-calculations.com/Satellite/suninterference.php

  8. No surprise that reception is strong here in 87 (close to 24 and 16) on my T55  Wavefrontier with inverto black ultra. No problem even during heavy rain last night. HD channels transmitted in DVBS2 8PSK are very sensitive to problems with the stability of the lnb's local oscillator and skew. Imperfect skew may result in glitches even during mild rain. LO problems have the same effect but regardless of rain and is common for old lnb's-replace the lnb.

  9. Sorry, I mean many more transponders have been switched 'on' on Astra 2F to take over the Eutelsat transponders. Most of the new transponders seem to be on the pan-Europe beam. E.g.  'TV shop UK' , not interesting and for UK only,  is currently reported to be on 2F's pan-Europe beam. But also BT sport SD and HD first appeared on the UK spotbeam and are now also available on the pan-Europe beam. Things might still change between now and October 10 though.

×
×
  • Create New...