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Dish elevation

Discussion in 'DISH SETUP: Single sat, Multi-Sat & Motorised' started by Idiot, Apr 19, 2017.

  1. a33

    a33 Member

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    My Satellite Setup:
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    Though this is the ideal practice (dead vertical 360 degrees), I would say (for theoretical understanding) dead vertical is only needed EAST/WEST.
    North/South deviation of the pole can be countered with elevation of the mount, I would say.

    But of course, I like my pole dead vertical 360 degrees also! Then you know you don't have to worry, whatsoever....:)

    greetz,
    A33
     
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  2. Terryl

    Terryl Specialist Contributor

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    My Satellite Setup:
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    And now a 10 foot "C" band dish.

    Custom built PC
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    I agree.
     
  3. moonbase

    moonbase Small Dish Man

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    The need to have a vertical pole depends on the mount being used to attach the dish to the pole. If something like a polar mount or Jeager 1224 H-H motor is being used then it is the alignment of the mount on top of the pole that is important. If the top of the pole that the mount is seated on is not cut at 90 degrees to the vertical length of pole then even if the pole is vertical in all planes the mount will not be aligned correctly.

    In addition, if anything like a pole size adapter is being used then these often have a levelling system inbuilt.
    Just Sharing This - 4.5" to 3" Pole Adapter

    The need for vertical poles is more related to dishes mounted on diseqc motors that can slide up or down the pole rather than have a need to sit on top.


    Rgds
     
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  4. moonbase

    moonbase Small Dish Man

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    For example, a 3 inch diameter galvanised pole is being used for a polar mount or Jaeger 1224 and it has a small 1 mm burr of metal on the top left over from cutting or galvanising. This small burr will add just over 0.7 degrees of tilt to the mount. Even if the pole is vertical in all planes along its long axis the mount will be 0.7 degrees out from vertical.


    Rgds
     
  5. lovelyperson

    lovelyperson Dreamer

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    My Satellite Setup:
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    1.2m dish + Stab HH120
    1.0m dish fixed 19.2ºE(Canal+ Spain etc)
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    from experience i had i would agree! :D:D
     
  6. st1

    st1 SMC-dish aficionado

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    Yes, but with e.g. CM1.2 polarmounts, they clamp firmly around the pole eliminating most of the unevenness on the top.
    In contrast, the CM180 AzEl mount does have bolt-fastening like on CJ or RimaNTSS' creations, so they can be adjusted a bit.
    Not sure about the CM180 PM, but the prodelins also have bolt fasteners.
    The problem is: it can be hard to determine if the mount is vertical if adjusted wrsp to a non-plumb pole...
     
  7. Idiot

    Idiot New Member

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    Ok well I've spent the past 2 afternoons trying to sort this out and all I've achieved is losing west completely. Everything is mounted correctly as far as I can tell.

    I give up, this is too much of a headache. My username still stands.

    Does anyone know of all good companies that will work with motorised dishes in the East Anglia area?
     
  8. RimaNTSS

    RimaNTSS Super Moderator Staff Member

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    do not worry @Idiot , everything is going to be fine. Just read little bit more and start your install from from ground "zero" . Just try to be logical and follow all steps in installation one-by-one.
     
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  9. jeallen01

    jeallen01 Specialist Contributor

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    So, I assume that means that you have checked that the pole IS vertical, and that means that the dish should track correctly IF it points absolutely due True South when set to "0 degrees" on the mount (the dish elevation must already be roughly correct or you would not be getting anything much at all) - but have you remembered to correct for the difference between True South and Magnetic South at YOUR location?

    OTOH, check the correction required at http://www.satsig.net/maps/lat-long-finder.htm - you put in your post code and it tells you Magnetic compass bearing (azimuth) and so you don't have to work out the correction, and also shows the beam elevation (how you achieve the latter will depend on which dish and motor mount you are using).

    Therefore, it might help, and this has been said before, please can you tell us exactly which dish and motor you are using, and whether you are using Diseqc 1.2 or USALS motor control?
     
  10. st1

    st1 SMC-dish aficionado

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    Don't give up!

    Unless you have some seriously faulty equipment, you ARE able to set the dish up correctly.
    The less experience you have just requires a bit more patience.

    When setting up polar-mount or horizon-to-horizon dish, there's a simple set of rules that just need to be followed to the point.
    And as with any other setup - and believe you me, most members on the forum have been there - getting it right requires several attempts, plus continous fiddling to adjust, optimise, and maximise.
    Some of us never stop fiddling, endlessly trying to squeeze a few more dB or % out of our set-ups.

    If you want members here stop giving genernal advice, just upload a few pictures of dish, mount, motor, mounting point etc.
    Takes 5 minutes. Allows people to much more specific.
     
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