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Thread: Dish setup in Octagon SF918 menu - LNB High / Low?

  1. #21
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    Cool Here we come.

    Quote Originally Posted by Gizbo View Post
    Hi Druid,
    Put the LNB on 0.0 position as you described above.
    Pointed the satellite in the right direction.
    Put skew on about 80.1 degrees and elevation on 50 degrees.
    Connected the SatFinder between STB and LNB.
    The first Satellite I found was the C1. When I tried to watch a channel it looked good :-).
    The second one Intelsat 8.
    The thirth one was D1. I configured it in the position the SatFinder showed the highest channel (by changing azimuth and elevation).
    When looking at the SBS channels it didn't look too good. It showed blocks on the screen.

    It was getting dark outside so I have to continue this weekend.

    To be continued .... :-)

    Regard, Gizbo

    P.S. Do they already know what postion of D3, so I can put an empty LNB holder in place?

    G'Day,
    Seems we're in the right ball park.
    Your Skew should be 81.2 , not 80.1 .
    I hope you mean that you are still in centre position.
    Unless you have a valid card for SBS, may not work too well.
    Try the different channels for a clear one.
    Don't forget you will need to adjust the Skew separately in the LNB bracket, as well as the overall Skew by tilting the dish.(81.2)
    Don't worry about D3, as, depending on the situation at the time, could even replace one of the current Satellites.

    Looking forward to your next report.
    Kindest Regards, " The Druid "......



  • #22
    Junior Member Gizbo's Avatar
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    Thanks for the tips Druid. Hmm, not sure if my signal is OK. Just had a look on LyngSat to see what FTA channels D1 offers. I only got a few SBS channels. I didn't adjust the skew on the LNB so maybe that caused the issue. I don't think the dish skew is the issue as I only connected one LNB (on 0.00) on the LNB rail.

  • #23
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    Talking All set, now to connect frugally.

    G'Day Everyone,
    With a little luck and patience you should have maximum signal on all 4 Satellites.
    The best approach to connect to your STB at this stage would be by a 4X1 DiSEqC switch and setting you antenna configuration for each Satellite. Don't forget that if you have used different LNBs on each Satellite that you must configure them accordingly in your setup.
    From this point there are many and various ways of connecting multiple satellites and STBs. Be-aware the more complex you make it, the bigger the whip for your back. It would pay to put your switching as close as possible to the dish, but protected from the weather if possible. With that you will be able to use the minimum of Co-Ax down lead.
    I would like to iterate at this time, set up the first 3 or 4 as I have outlined first before attempting a larger array. When doing the others later, make sure you run the program again and put the new ones at their correct stations. There should be no need to change the first ones.
    Kindest Regards, " The Druid ".....

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    Default The proof of the pudding is in the eating.

    Eat your heart out. You too can have one as big as this.




    Kindest Regards, " The Druid ".......

  • #25
    Junior Member Gizbo's Avatar
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    Hi Druid,
    Setup my dish today, followed all your instructions and all 4 LNB's are working great. Once I got the hold on it it was not to difficult, just a lot of work. Almost time to party :-).
    I configured all satellites with a DiSEqc ver 1.1 switch in the menu of the Octagon STB.
    I connected all the LNB's to the DiSEqC 4x1 switch and could not scan for channels anymore on any of the Satellites??? I still noticed the signal strenght was there.
    The switch I have is a GD-41C 4 in 1 DiSEqC Freq Range:950-2400MHz (from iTechWorld).
    Could it be this switch is not correct??

    Gizbo

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    Quote Originally Posted by Gizbo View Post
    Hi Druid,
    Put the LNB on 0.0 position as you described above.
    Pointed the satellite in the right direction.
    Put skew on about 80.1 degrees and elevation on 50 degrees.
    Connected the SatFinder between STB and LNB.
    The first Satellite I found was the C1. When I tried to watch a channel it looked good :-).
    The second one Intelsat 8.
    The thirth one was D1. I configured it in the position the SatFinder showed the highest channel (by changing azimuth and elevation).
    When looking at the SBS channels it didn't look too good. It showed blocks on the screen.

    It was getting dark outside so I have to continue this weekend.

    To be continued .... :-)

    Regard, Gizbo

    P.S. Do they already know what postion of D3, so I can put an empty LNB holder in place?
    Appologies, I configured the LNB on DiSEqC 1.2 in the menu.

    The details of the switch are:
    Product Description

    Features:
    DiSEqC 2.0 support bi-directional DiSEqC full control functions
    Allow remote units to report their possible and actual configuration
    4 satellite inputs selected by DiSEqC commands
    Support DiSEqC "standyby" commands
    1 output for receiver with "DiSEqC" commands function
    Backwards compatibility with "Tone Burst"

    Specification:
    GD-41C
    Frequency range: 950-2400(MHz)
    Insertion loss: 3(dB)
    Return loss: 8(dB)
    DC power loss: 10(mA)
    Power passing: 500(mA)Max
    Impedance: 75 Ohm all ports.
    Connectors: "F" type female.


  • #27
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    Question No scan ????

    Quote Originally Posted by Gizbo View Post
    Hi Druid,
    Setup my dish today, followed all your instructions and all 4 LNB's are working great. Once I got the hold on it it was not to difficult, just a lot of work. Almost time to party :-).
    I configured all satellites with a DiSEqc ver 1.1 switch in the menu of the Octagon STB.
    I connected all the LNB's to the DiSEqC 4x1 switch and could not scan for channels anymore on any of the Satellites??? I still noticed the signal strength was there.
    The switch I have is a GD-41C 4 in 1 DiSEqC Freq Range:950-2400MHz (from iTechWorld).
    Could it be this switch is not correct??

    Gizbo
    Hi Gizbo,
    That's good news.
    Can't think of a reason why you can't scan.
    Can you try another STB ? Just in case it's a peculiarity of the sf918.
    Hang on, I seem to remember that they do not have " Blind Scan ".
    Or, as you say, the switch itself.

    We would welcome any input from others who may have any experience with this problem.

    Kindest Regards, " The Druid "......


  • #28
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    Default Stands to reason.

    Quote Originally Posted by beer4life View Post
    Hi Gizbo,
    That's good news.
    Can't think of a reason why you can't scan.
    Can you try another STB ? Just in case it's a peculiarity of the sf918.
    Hang on, I seem to remember that they do not have " Blind Scan ".
    Or, as you say, the switch itself.

    We would welcome any input from others who may have any experience with this problem.

    Kindest Regards, " The Druid "......

    PS: Are you set on "Tone Burst" , A, B, C or D for each?

  • #29
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    Default

    I use diseqc 1.0 on mine 918 and other boxes. It just works all the time.

    Leroy
    XCRUISER HDSR600HD twin sat and terrestrial receiver $OOS *
    XCRUISER HDSR385 Avant - sold out$OOS UltraPlus DVB-T and DVB-S2 tuners $49 Remotes $OOS

  • #30
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    Talking

    Quote Originally Posted by Gizbo View Post
    Appologies, I configured the LNB on DiSEqC 1.2 in the menu.

    The details of the switch are:
    Product Description

    Features:
    DiSEqC 2.0 support bi-directional DiSEqC full control functions
    Allow remote units to report their possible and actual configuration
    4 satellite inputs selected by DiSEqC commands
    Support DiSEqC "standyby" commands
    1 output for receiver with "DiSEqC" commands function
    Backwards compatibility with "Tone Burst"

    Specification:
    GD-41C
    Frequency range: 950-2400(MHz)
    Insertion loss: 3(dB)
    Return loss: 8(dB)
    DC power loss: 10(mA)
    Power passing: 500(mA)Max
    Impedance: 75 Ohm all ports.
    Connectors: "F" type female.


    IT ALL WORKS

    I was a bit confused by the menu options for the switch. I had to choose the option 1.1 INP1 for LNB1 in the switch and 1.1 INP2 for LNB 2 etc...

    Druid you rock I own you lots of
    Many thanks for all the help and assistance.
    The T90 was the first dish I configured and I learned a lot of it.
    Now I'm going to see what I can do with the STB


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    Cool Graduation Day !!!!

    Quote Originally Posted by Gizbo View Post



    IT ALL WORKS

    I was a bit confused by the menu options for the switch. I had to choose the option 1.1 INP1 for LNB1 in the switch and 1.1 INP2 for LNB 2 etc...

    Druid you rock I own you lots of
    Many thanks for all the help and assistance.
    The T90 was the first dish I configured and I learned a lot of it.
    Now I'm going to see what I can do with the STB



    Congratulations Gizbo, you have graduated from "newbie". You sure did it the hard way for a first up dish install. You've got to be the best student that I've ever had under my wing. Not to be forgotten, the excellent assistance from Leroy. No longer a Fledg'ling, spread your wings.

    Kindest Regards, " The Druid "....

  • #32
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    Talking An old and seasoned Veteran challenged.

    Quote Originally Posted by z80 View Post
    Wooshh...

    I might have another go at the toroidal thats been sitting in the shed for 3 years...

    Excellent work B4L....truly concise and plain speaking.


    C'mon Zed,
    You have no excuse now. Don't just let a ' newbie ' show you how easy it is.
    Should keep you out of mischief for the rest of the weekend.

    Kindest Regards, " The Druid ".......

  • #33
    Junior Member Gizbo's Avatar
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    Default

    Quote Originally Posted by beer4life View Post
    G'Day Everyone,
    If you go to this site, you can input your own data, essentially same setup, but slightly different figures to suit your location.


    These are the data for Gizbo:



    I must repeat, "Get the centre LNB setup and locked in FIRST."
    Then the others will be so much easier to do.
    If you have any questions relating these to the instruction manual, feel free to ask.
    Kindest Regards, " The Druid "....
    In the program I added 2 satellites with 2 degrees different and I get really strange results (I circeled them in red in the picture) .

    Is this a mistake in the program or am I missing something?

    Cheers,

    Roel

  • #34
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    Wink East is East and West is West.

    Hi Gizbo,
    The problem is apparently in the program in that it cannot handle Sats to the West of you. ie: both sides of the observed parabola of the Clarke belt.
    But you also made it difficult by adding those two and shifting the position of your central Sat, D1.
    I'm not happy with the calculations that I made to fix this, so suggest you just use the original ones until I sort this out.
    Will keep you posted when I solve this.
    Kindest Regards, " The Druid "........
    Last edited by beer4life; 29-09-08 at 08:01 AM.

  • #35
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    Thumbs down This is a work-a-round for Toroidal Calculations.

    The impossible we do straight away, however, Miracles do have a habit of taking a little longer.
    All this post proves is that the WaveFrontier Toroidals can only be successfully used on one side or the other of the Clarke Belt, but not across the top. I've decided to edit it rather than delete it as it, in itself, proves the fallacy or misleading claims of it's pundits.
    G'Day Cobbers,
    My apologies for the delay. Turns out the " Satlex " calculator is not 100%.
    Works OK if all Sats are to your East or West but not if East and West.
    I've searched high and low, but cannot find a published fix although forums have reported the false figures at the extremes of the rail.
    Typical:
    If you look at the your view of the parabola of the "Clarke Belt", you will see that the calculations need to be centered around your location for this program.



    To overcome this problem, I suggest that you select a Sat that is as near as possible True due North from your location.
    Then with real or imaginary Sats, evenly spaced East and West for either end, calculate mirror figures for other side as illustrated. It's not necessary that you install them all, but you need them there for the calculations or future use.



    I Hope that this is all self explanatory, if not, I'm here to help.
    Please note that these figures are incorrect but left here to explain WHY.
    Kindest Regards, " The Druid "........
    Last edited by beer4life; 30-09-08 at 04:59 PM.

  • #36
    Junior Member Gizbo's Avatar
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    Thanks Druid,
    I understand the curve of the clarcebelt is related to how many sats I can get with the dish.
    Because I had quite a bit of space left on each side of thethe rail () I was hoping it was possible to ad Measat 2 (148deg) and Pas 2 without having to re-allign the remaining LNB's.

    Cheers,
    Gizbo

  • #37
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    Red face Corrections.

    Quote Originally Posted by Gizbo View Post
    Thanks Druid,
    I understand the curve of the clarcebelt is related to how many sats I can get with the dish.
    Because I had quite a bit of space left on each side of thethe rail () I was hoping it was possible to ad Measat 2 (148deg) and Pas 2 without having to re-allign the remaining LNB's.

    Cheers,
    Gizbo
    Hi Cobber,
    Don't take any notice of my previous post. I am going to edit it.
    All it proves is that the WaveFrontier Toroidals can only be successfully used on one side or the other of the Clarke Belt, but not across the top.
    All it proves is that you can only get the right elevations if all your Sats are either to the East or West of your location, but not both at the same time.
    Essentially this means that you can add PAS 2 @ 169.0 no problem. Just slip it on and with STB tuned, slide it sideways to pick up the Sat. Possibly only feeds there that you can get, but may be interesting.
    Any thing added at the other end of your rail will not have the correct elevation.

    Kindest Regards, " The Druid "....

  • #38
    Junior Member Gizbo's Avatar
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    Quote Originally Posted by beer4life View Post
    Hi Cobber,
    Don't take any notice of my previous post. I am going to edit it.
    All it proves is that the WaveFrontier Toroidals can only be successfully used on one side or the other of the Clarke Belt, but not across the top.
    All it proves is that you can only get the right elevations if all your Sats are either to the East or West of your location, but not both at the same time.
    Essentially this means that you can add PAS 2 @ 169.0 no problem. Just slip it on and with STB tuned, slide it sideways to pick up the Sat.
    Any thing added at the other end of your rail will not have the correct elevation.

    Kindest Regards, " The Druid "....

    No worries Druid.

    But what about Measat 2. It is on the top of the Clarck Belt, not really on the left?

  • #39
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    Cool One small step..........

    Quote Originally Posted by Gizbo View Post
    No worries Druid.

    But what about Measat 2. It is on the top of the Clarck Belt, not really on the left?

    Hi,
    Try it by all means, may not be optimum, but I would hesitate changing the tilt for fear of losing the others.
    Kindest Regards, " The Druid ".......

  • #40
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    Question Error in Southern Hemisphere for "Satlex Program".

    G'Day Cobbers,
    Just to prove that there is an error in this program, I've attached the data for looking North(as we should see the Sats). And the same Sats and Longitude looking South.
    Please note that the figures should be virtual mirror images.




    It would seem that we are again the poor country cousins down under.
    Seems to work better for the Northern Hemisphere.
    I am still concerned about the elevations when viewing across the top of the "Clarke Belt". My understanding of the tilt adjustment, is that the WF Toroidal Dish cannot follow the calculated elevations in those cases.
    I'm trying to contact the author for his opinion.
    This anomaly explains why so many have trouble setting these dishes up, while others find it a breeze.
    Perhaps some egg-head can fix the program, beyond my expertise.
    Kindest Regards, " The Druid ".....

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