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Multifocus/ multi feed dish rotating dish

  • 14-05-2025 04:11PM
    #1
    zg3409
    Registered Users, Registered Users 2 Posts: 7,373 ✭✭✭


    HI have a maximum e85 dish I intend setting up shortly. I have no real need for multifocus (especially with my use case) but I would like to receive qo100 at 26 degree east and if possible also saorsat at 9 East. ( I have the special lnb) I was also hoping for sky but 26 & 28 are too close so I will keep my old sky dish.

    I don't have the paper manual for the dish, I can find foreign language versions from a Google. It's hard to auto translate so if someone had a paper version or could translate that would be great.

    I have a handheld Satellite receiver and some experience so I should be ok DIY.

    My main question is the whole dish can elevate, but also rotate, I assume the elevation would be set for the lnb in the middle, but the dish rotation would be to align all feeds to the belt if satellites in the sky. What would this need to be for Dublin assuming say 26 East at prime and if possible 9 East at one end of the feed rail?

    My wild guess is it's related to the lnb skew which is related to the angle of the belt from location.

    Thanks in advance

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Comments

  • #2
    The Cush
    Registered Users, Registered Users 2 Posts: 16,104 ✭✭✭✭The Cush


    I had to go out and check, I have an E85 also. Put it up some years ago. I'll have to dig through the attic to see if I can find the original paperwork.

    At the time I set it up for the usual 3 satellite locations 28/19/13 with DiSEqC switching. I only really use it for 28 now, the other LNBs have sort of become on-dish spares if I need them and they're still working.

    I've forgotten how I set it up now, but looking at the dish - it skews, not the LNBs, the LNB arm follows the geostationary satellite arc looking from the rear of the dish. Using offset focus reception the satellites higher in the arc their LNBs will be lower on the arm.

    Just to add I never found markings on dishes to be all that accurate, it was always trial and error adjusting until you got the best offset focus. I had a toroidal T90 before the E85 with similar dish skew.

    https://www.satellites.co.uk/forums/threads/maximum-e85-dish-signal-issues.147044/

    Post edited by The Cush on


  • #3
    The Cush
    Registered Users, Registered Users 2 Posts: 16,104 ✭✭✭✭The Cush


    I found the original "manual", a few pages. Didn't realise it was that far back, Oct 2016, HM-Sat Germany, €58.

    I'll scan and upload tomorrow, probably evening time.



  • #4
    The Cush
    Registered Users, Registered Users 2 Posts: 16,104 ✭✭✭✭The Cush


    Finally got around to scanning the manual. It's too large to attach here, 349 MB (50 MB is max allowed).

    PM me an email address and I'll forward.

    Just a correction on the terminology I used above, offset focus is your regular centre focus dish, offset parabolic dish. The LNBs either side of centre benefit from sidelobe reception. Couldn't remember it when posting last time but popped into the brain at breakfast this morning.



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