4 degree spacing bracket

Discussion in 'Free To Air (FTA) Discussion' started by comfortably_numb, May 31, 2018.

  1. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    I've been having trouble getting 4 degree spacing to work on the GeoSat 90cm dish. The LNB holders are just too wide to get the LNB's close enough together to make it work. I'm considering purchasing this item (although I'll be looking for it on Ebay because $14.50 shipping is outrageous on a small $5 item). Any thoughts? Anybody used one of these before with a Geosat? I'm looking to use it for 103/99 or 91/87.

    Satellite AV, LLC - Satellite Broadcaster Support and Equipment Distribution
     
  2. RimaNTSS

    RimaNTSS SatelliteGuys Pro

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    As an option you can try to make or order somewhere something like this. Made od INOX.
     

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  3. KE4EST

    KE4EST SatelliteGuys Is My Second Home
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    You will also need bullet LNBF's. As a normal LNBF will not work even in that holder. I don't know if they have them anymore. Yes, there shipping has always been that way.
     
  4. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    I would think something like this should be USPS First Class Parcel, $3.50 max ;)
     
    #4 comfortably_numb, May 31, 2018
    Last edited: May 31, 2018
  5. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    Thanks for the tip- you're right, I can't find them for sale anywhere. Glad I didn't purchase the bracket!!
     
  6. Alexander Olar

    Alexander Olar SatelliteGuys Pro

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    I’ve always pondered if cutting off some of the scaler ring on the LNBF will negatively affect performance. Any ideas?
     
  7. Jim S.

    Jim S. When someone asks you if you're a god, you say yes
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    That whole system was designed for people who wanted to get the Seventh Day Adventist channels from 101 and some of the other Christian channels on 97. Maybe they dropped it when the Adventists moved to 97?
     
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  8. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    I wonder if water would get in if you did that?
     
  9. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    Update: SatelliteAV is sending me a bracket for free since I bought my dish from them. I might not have any LNB’s to use with it, but will be good for experimentation :biggrin
     
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  10. iBoston

    iBoston SatelliteGuys Pro

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    I use one of them for 125/121, although, its no longer needed as they discontinued the 121w channel i watched. Ill have to figure out another use for it. They work quite well.
     
  11. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    Did you use bullet LNB’s with it?
     
  12. iBoston

    iBoston SatelliteGuys Pro

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    Yes.
     
  13. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    Have any you’d like to sell? :biggrin
     
  14. Magic Static

    Magic Static FTA Geek
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  15. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    Yeah, but you have to buy the dish with it. Not that I’m opposed to having another dish, but I already have 4 ;)

    Basically, it looks like $99 for the dish, $5 for the bracket and $50 for 2 of the bullets

    They sell the bullets individually for $48, so they are basically giving one away.... it DOES make you wonder
     
    #15 comfortably_numb, May 31, 2018
    Last edited: May 31, 2018
  16. bpalone

    bpalone SatelliteGuys Pro
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    Just thinking out loud, but could you maybe find the style of LNBF you need somewhere over seas? Just a thought.
     
  17. RimaNTSS

    RimaNTSS SatelliteGuys Pro

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    comfortably_numb I have several used LNBFs with head diameter ~45mm, maybe not exactly bullet-heads, but also not so wide. If you think you could use them you can have them shipped. IMG_20180601_065223 (Large).jpg
     
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  18. Titanium

    Titanium AI6US
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    I designed the 4 degree bracket for the GSP 90cm dish about 12 years ago. It was produced to be used with the GSP SL1/SL2 bullet LNBFs. Since those models are now NOS and priced so high, the Inverto BLACK MultiConnect Single LNB would be a suggested substitute.

    LNBFs with any scalars larger than the 40mm clamp opening will not fit into the dual clamp. Alternately, it would be possible to remove the plastic housing and cut away the scalar at the adjoining point to allow two LNBFs to sit flush next to each other. I did this in early experimentation and @wescopc has a thread here on the forum on trimming KU LNBFs for 2 degree mounting.

    Be sure of the exact skew angles before cutting the scalars. Optimize the skew with the bracket set to the midpoint offset skew (a point that is 2 degrees between the two target satellites). Example: if targeting satellites 97/101, set the bracket angle for 99w to set the two LNBF centerpoints at the correct height. A suitable feed cover would need to be fitted to prevent water from filling the cavity.

    Produced step by step documentation for installing and optimizing the dual bracket kit. This material may still exist either in the SatGuys equipment guides or on the SatAV website.
     
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  19. comfortably_numb

    comfortably_numb Topic Starter Dogs have owners, cats have staff
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    This one? Inverto BLACK MultiConnect Single LNB, 23mm, 0.2dB

    And I would need to use the adapter(s) that came with my GeoSat LNB holders to make that fit in the dual bracket, right?
     
  20. Titanium

    Titanium AI6US
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    Choose between the single, twin or quad versions of the Inverto multiconnect.

    Yes, a 23mm to 40mm spacer would be used. FYI, 23mm diameter throat LNBFs usually are shipped with 40mm spacer adapter included.
     

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