4 degree spacing bracket

[comfortably_numb]

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

 

[RimaNTSS]

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

 

[KE4EST]

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

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.

 

[comfortably_numb]

Yes, there shipping has always been that way

I would think something like this should be USPS First Class Parcel, $3.50 max

 

[comfortably_numb]

You will also need bullet LNBF's

Thanks for the tip- you're right, I can't find them for sale anywhere. Glad I didn't purchase the bracket!!

 

[Phalaenopsis]

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

 

[Jim S.]

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?

 

[comfortably_numb]

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

I wonder if water would get in if you did that?

 

[comfortably_numb]

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

 

[iBoston]

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.

 

[comfortably_numb]

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.

Did you use bullet LNB's with it?

 

[iBoston]

Did you use bullet LNB's with it?

Yes.

 

[comfortably_numb]

Yes.

Have any you'd like to sell?

 

[Magic Static]

I saw a dual Bullet LNBF at SAT AV and on eBay there is this
36" 90cm Satellite FTA Dish with 4 Degree Kit w/2 LNBFs | eBay
Makes you wonder.

 

[comfortably_numb]

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

 

[bpalone]

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

 

[RimaNTSS]

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.

 

[Titanium]

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.

 

[comfortably_numb]

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.

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?

 

[Titanium]

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.