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2.4 Channel Master Offset

Discussion in 'DISH SETUP: Single sat, Multi-Sat & Motorised' started by nelson_b, Sep 27, 2016.

  1. nelson_b

    nelson_b Contributor

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    My Satellite Setup:
    Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + 2 BSC 421 C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers. - skystar 2 pc card - + other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
    My Location:
    north west yorkshire
    Hi - Folks -

    About time i got round to documenting this project:) -- i purchased this dish for £399.00 on ebay over a year ago .. bidding in the last few seconds as no one else had bothered .... probably because it had to be collected from just outside Belfast ... anyway it was now mine... fuel and ferry costs for car +trailer added about another £300.00 :(... ferry 1.jpg ferry 2.jpg but i thought "what the hell" these 2.4 C.M. dishes and mounts don,t come up second hand very often .... it can be a project for my retirement .. :)

    The only part of the dish setup not included in the purchase was the king post that the whole mount swivels on .. that was left on the roof of the building that it was originally located on (maybe to mount a different dish on?) ... here are some pics supplied by the chap i bought it from to show the assembly/setup .... it was in pieces in the sellers Garage when i collected it . as you see from the pics its a dual axis mount and has 2 large (Thompson Saginaw) jacks with it.

    1.jpg 2.jpg

    And so its been sat waiting (for a year) for me to get round to working on it .. which i have been .. on an off ... during the past couple of months.

    But just for initial playing and testing i,v fastened the dish to the polar mount that held the Prodelin as its currently unused and solidly planted by my garage door --- its not ideal, as the weight balance is way too far forward from the pole and is a little springy in a strong wind
    but its handy to work on here, and should not be in this spot for more than a few months ... The prodelin mount although very basic works well (even with a tiny old Echostar jack on it ) ..... pics showing how i,v fastened it to the Prodelin mount etc ...

    3.jpg 4.jpg 5.jpg 6.jpg 7.jpg 8.jpg

    Picture upload limit reached for this post ....
     
  2. nelson_b

    nelson_b Contributor

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    My Satellite Setup:
    Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + 2 BSC 421 C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers. - skystar 2 pc card - + other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
    My Location:
    north west yorkshire
    continued ...

    9.jpg 10.jpg 11.jpg 12.jpg 13.jpg

    one of the best weak signal results ... so far is 11142 V 27500 from 25 .5 East
     

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  3. Captain Jack

    Captain Jack Модератор Staff Member

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    Verrry nice! Look forward to further progress. Is this going to be a permanent fixture at some point - perhaps replacing the 1.8m?
     
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  4. blademedia

    blademedia Member

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    That's very nice nelson my favourite dish mine will be up soon we can work together testing signals :)
     
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  5. nelson_b

    nelson_b Contributor

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    My Satellite Setup:
    Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + 2 BSC 421 C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers. - skystar 2 pc card - + other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
    My Location:
    north west yorkshire
    I think it will probably end up where the 1.8 is now sitting .... once i,v finished messing about and decided what l.n.b. arrangement i want on it ... i,d like to try it with the reflector removed and 1 k/u and 2 C band l.n.b.,s like i have on the 1.8 .

    yes indeed look forward to that ... had to wait some time for the right 2.4 c.m. to come my way :)
    had the 1.8 c.m. over 15 years now been very happy with it .....
     
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  6. blademedia

    blademedia Member

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    It will give us an idea if set is ok, plenty of 2,4 in Italy mine is currently being shipped along with a 1,8 channel master, will be at my home Friday along with household items, I left other types where they was, great dishes.
     
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  7. John

    John Enthusiast.

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    Location:
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    My Satellite Setup:
    Elite 2.2 PF - CM1.8 - CM1.2 - Gibertini 1.25.
    Ku - Ka -C & Ext C.
    PC cards-TM5402 receivers.
    Promax FSM.
    My Location:
    North Nottinghamshire.
    ...Note to self: ....... Stop looking at it, STOP LOOKING AT IT
     
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  8. blademedia

    blademedia Member

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    You will need extra bit on dish, I have normal arms, my dish will be here Friday if you need any measurements let me know
    dsds.PNG
     
  9. scopus

    scopus Specialist Contributor

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    Channel Master 1.8 Motorised, C/Ku/Ka and a 1.2 Fibo Gregorian Motorised, Ku/Ka all connected to a TM 8000, 5402M3, 5302, Dr HD F15 and Amiko A3, plus a Satfinder5 Spectrum Analyser. Sansui A9 Amp and BOSE Acoustimass speakers for the audio.
    My Location:
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    Wow...great job Nelson.....it is a great dish.
    I'm commencing now to drool......
     
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  10. Feedsat_DXer

    Feedsat_DXer Specialist Contributor

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    I have the same antenna like @nelson_b , an uplink antenna with subreflector, and I'd like to change it for normal arms , I would be most grateful if you had the kindness to share the exact measurement ,arms, lnb holder, etc..
     
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  11. blademedia

    blademedia Member

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    That is not a problem containers arrive Friday and will be unpacking over the weekend , I will get back with precise measurements/angles
     
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  12. nelson_b

    nelson_b Contributor

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    My Satellite Setup:
    Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + 2 BSC 421 C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers. - skystar 2 pc card - + other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
    My Location:
    north west yorkshire
    Thanks -- that could well be a help to me :)
    that,s an interesting feed/l.n.b. arrangement on that dish .......
     
    Last edited: Sep 27, 2016
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  13. blademedia

    blademedia Member

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    Sorry miss understanding I call normal arms this,
    bhhggf.PNG

    To make yours nelson to normal feed you will need the bit i pointed out my dish arms is same as above,

    @Feedsat_DXer is it above arm measurement's that's needed ?
     
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  14. blademedia

    blademedia Member

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  15. blademedia

    blademedia Member

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    Hello nelson so this part has been fabricated by you
    [​IMG]

    Below is part of the kingpost that sleeved over a smaller pole the clamp at the bottom secured it in place this is AZ adjustment
    [​IMG]
     
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  16. blademedia

    blademedia Member

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    I see how it works now missed this bit :-doh
    Capture.PNG
     
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  17. nelson_b

    nelson_b Contributor

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    My Satellite Setup:
    Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + 2 BSC 421 C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers. - skystar 2 pc card - + other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
    My Location:
    north west yorkshire
    Hi -- Offline most of last night -- due to a mains power cut ...
    Yes you can see on the pic how its arranged ...

    To answer previous post the parts i needed to make to join the two mounts were the angle iron and tube
    17.jpg and the top support /adjuster etc 18.jpg i wanted to join them without cutting and altering either of the mounts . as this is by no means a permanent arrangement

    I have a pic of the missing kingpost here -
    19.jpg what i do have here is a hard plastic disc that sits on top of the kingpost for the whole mount arrangement to turn on --- 20.jpg
    a bit basic but if its well greased it probable works ok
    also at the bottom of the kingpost sleeve are holes with welded nuts to fit adjusting bolts to take up any play ... again, probably ok if kept well greased
    21.jpg
     
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  18. blademedia

    blademedia Member

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    Nice arrangement the missing inner kingpost will be easy to duplicate, what your intensions regarding controller and skew control.
     
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  19. nelson_b

    nelson_b Contributor

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    My Satellite Setup:
    Strong 4375 driving 1.8 C.M. offset + Inverto Black Ultra twin + 2 BSC 421 C band l.n.b.,s - DR HD F15 - TM5302 and Skybox/Openbox M3 - HD receivers. - skystar 2 pc card - + other dishes in use - 2.4 CM offset - Alcoa 1.8 P.F. - C.M. 120.
    My Location:
    north west yorkshire
    Not sure what/where i will end up, with this dish ... its early days and things only happen slowly here ... only just reaching the l.n.b arrangement/testing stage as yet :)
    The dual axis mount is "ultra" heavy duty - and it would be a shame not to put it into use ...
    but from a simple/ease of use point of view i would prefer a polar mount ... it would have to be very strong though the Dish and its metal supports are "heavy" ... i,l be interested to see what you create for your portable base/mount....;)
     
  20. blademedia

    blademedia Member

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    To use it with that mount you will need special part to control lnb you can get one that does ku and c band (not cheap) you will also need controller (not cheap) I was lucky to find controller for £400 £2000+new :eek:

    Using polar mount is easy option big arc one not cheap £2000,

    I make this
    2-4m-_az-el_grey_background_12__flip-_1aa.jpg polarmount_close_small_1aaa.jpg

    And this
     

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