Search results for query: *

  • Users: a33
  • Order by date
  1. A

    I want to add Ku Band to my Cband Dish.

    I think I illustrated above, that this is mainly the consequence of the mismatching illumination angle of the LNB-feedhorn towards the opening angle of the (PF) reflector. Do you agree to that? So I read your ITU documents a bit more thorough, and they are indeed about interference of...
  2. A

    I want to add Ku Band to my Cband Dish.

    ...you have a PF dish with f/D=0.31 (width=100, depth=20), and LNB feedhorn with f/D-equivalent of 0.75: Effective.diameter = ( Diameter.of.PF.dish * 0.31 ) / 0.75 . Outcome = Diameter.of.PF.dish * .41, so just over 40% of the width of the PF dish. So that example value matches your value, in...
  3. A

    Comments from a newbie to FTA

    This checking method would not work, I realize by now, because the GND would not be connected properly. What might work: insert the jack plug only 6mm, and check at the tip and ring1 connections of the cable if sound or vid signal is there. If so, the sleeve is only 3mm. This method assumes...
  4. A

    Comments from a newbie to FTA

    Then if Ring2 = Vid, R-L-Vid-GND might well be your needed pin-out, with the longer version of the 3.5 jack. I'll look forward to the test, with your ordered cable! Greetz, A33
  5. A

    Comments from a newbie to FTA

    I looked it up again: With my "SAB Sky 4800 mini" receiver the pinout was (from tip to sleeve): Right - Left - Video - CommonGround. I needed the long version of the plug (see my post above). I once tested a normal length audio 3.5 jack cable in the receiver, and it didn't output R. Just L and...
  6. A

    Comments from a newbie to FTA

    Notice that the 3.5 jack plugs of these two links have different lengths (one has a longer sleeve, than the other)! I had this issue with a receiver myself; I needed the longer plug, but that was harder to find (at that time). Greetz, A33
  7. A

    Need some help - 8 foot Unimesh install

    I'm not sure what you are trying to say. It's all open for interpretation, you say. The steps of what to do, described in these "secrets", are clearly described I would say, so not open to interpretation differences. So the only thing left for interpretation, would be if this procedure (these...
  8. A

    Need some help - 8 foot Unimesh install

    Well, you seem to have a high opinion of my understanding of motorized setups (quod non). :( :( :( You are right, though, that I stopped reading carefully, when I first read the evident mistake in the procedure. I then read the rest rather superficially. No need to invest time in digesting...
  9. A

    Need some help - 8 foot Unimesh install

    Well, points #6, #7 and #8 I find not so good. What's the point in rotating the whole setup around the pole, when you have only checked at one side (the east side), and not yet made certain on both sides that the north/south outlining is indeed not OK? This advice, in fact, is...
  10. A

    Need some help - 8 foot Unimesh install

    Yeah. And/or post #19. Haven't seen answers to the questions posed there. Greetz, A33
  11. A

    USALS Motors: The Device from Hell

    Did you have it completely off from power, since? It might be the protection of a short, for which in some receivers a complete new start is needed.
  12. A

    USALS Motors: The Device from Hell

    also when you use the manual buttons? Does the motor have carbon brushes? they might be faulty. But I don't know if this present non-moving has a relation to your initial (electronic?) problem... Greetz, A33
  13. A

    USALS Motors: The Device from Hell

    So, as the relays are clicking: is the voltage reaching the motor? If yes, the problem is in the motor. If no, are the relays in fact switching (even though you hear them clicking)? (I'm not sure if a stuck relay is still able to give a clicking sound?) I hope you find the cause!
  14. A

    USALS Motors: The Device from Hell

    The way I see it, it is more an electronic issue than something physical. So I don't think it would make a differencve. Greetz, A33
  15. A

    USALS Motors: The Device from Hell

    It might be, that the USALS/diseqc command is received in a distorted manner. Did you try the motor with a short cable? Otherwise, checking the inside of the motor (if possible) would also be my way. If the GotoNn commands do work OK, that would be a possibility also? Use USALS (when it has a...
  16. A

    Need some help - 8 foot Unimesh install

    For me, the first target would be to have your setup aligned to true south, and/or receive a satellite near true south. I'm not sure what you have done already, regarding that? And how have you set your axis elevation angle, and your dish declination offset angle? When you have found a...
  17. A

    Ice Pack

    I have experience only with Ku-LNBs. Normal LOFs for universal LNB are 9750/10600 I could set these at "manual", and then input 9745/10595 or 9755/10605. Standard LOF for C-band is 5150 or so? No possibility for manual setting? But with me, C/N levels were never the problem, only getting the...
  18. A

    Ice Pack

    By the way. I've had an LNB with temperature-dependent (unstable!) LOFs, for which I had to change the LOFs with about 5 MHz twice a year, for summer and winter. But if I remember correctly, that had only effect on if the receiver could lock, or not (depending on the range of the AFC automatic...
  19. A

    Ice Pack

    Google doesn't forget. https://www.satelliteguys.us/xen/threads/lnb-performance-vs-temperature.395833/ :):)
  20. A

    Ice Pack

    Yes it would, it causes less noise in the LNB, so the S/N ratio improves. There was a (german) DrDish TV video on it, with Klaus Schumacher in Brasil receiving Astra1 (19.2E) in the analog days. Alas, I can only find the first video with him on the internet, not the second video where they...
  21. A

    I want to add Ku Band to my Cband Dish.

    Reduced illumination: agreed. Illumination angle of a normal Ku LNBf for an offset dish would be about 75 degrees (based on e.g. the Triax 115 dish), I guess, so equivalent to an f/D of about 0.75. Compare it to the f/D of the PF dish, and you can calculate what diameter of the dish is "seen"...
  22. A

    OTHER Need recommendation on multi-receiver switch

    Or, when you don't use the 4 receivers simultaneously, use a splitter with 4 diodes (power pass one way), and all 4 receivers can be "master" at their own time (also over the motor). Or, use three 2/1 priority switches (cascaded), and create a master - 2nd - 3rd - slave order for which receiver...
  23. A

    OTHER Need recommendation on multi-receiver switch

    I don't know which "this case" you mean? A setup like receivers - splitter - motor - diseqcswitch - LNBs would be possible, I guess. But you seem to mean something different? Apart from that, you can always create a "parallel" motor path, parallel to a diseqc switch + LNBs path. I have that for...
  24. A

    OTHER Need recommendation on multi-receiver switch

    I am trying to understand what you mean: Do you mean that the "ground" of the LNB port of one receiver has another voltage (relative to the 110V power supply?) than the "ground" of the LNB port of another receiver? Or do you mean something else? And what symptoms do you then see happening...
  25. A

    OTHER Need recommendation on multi-receiver switch

    There is one picture at the given link that shows 1 input, 4 TVs. So that is allright. The arrow on the splitter to output 1 is indeed confusing. If there is a diode inside, the arrow indicates the wrong way. However it also might be with this splitter, that the port has 'power through both...