Dish elevation and lnb height on offset 1.5m dish with multi lnb holder

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davieM

New Member
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3
My Satellite Setup
Vu Duo, prismcube, vu solo 4k, T90 Dish
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UK
I have a offset dish and Im attaching a INverto multi lnb holder to it, the lnb heights can be adjusted to move up and down, my question is how does it affect dish elevation, for example if I move the lnb higher up so nearer to the dishes center would the dish elevation need to rise or decrease?
 
RimaNTSS

RimaNTSS

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Some SAT-related hardware.
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N-E from Riga
When you do multifeed there is no need to adjust dish elevation. You just need to adjust elevation only once when you have maximum signal on central LNB. Multifeeded LNBs should be adjusted individually to get maximum of signal level.
 
D

davieM

New Member
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3
My Satellite Setup
Vu Duo, prismcube, vu solo 4k, T90 Dish
My Location
UK
Thanks for the reply, yeah I missed that the central lnb cannot be adjusted up and downwards because of lnb clamp :-doh
 
Channel Hopper

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The Inverto LNB holders were originally for use with their own range of LNBs (with the bullet style feedhorns). The 40-20mm sleeve should be a simple fit to most offset dishes, but some (Sky Zone 1/2 and Channel Master for example) will require a different feed clamp system to allow this to be installed.
 
RimaNTSS

RimaNTSS

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My Satellite Setup
Some SAT-related hardware.
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N-E from Riga
@davieM Could you show some pictures of your antenna?
 
Terryl

Terryl

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OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

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Deep in the Boonies in the central Sierra Nevada mountains of California.
Once the center LNB on the dish is aligned with it's satellite for the best signal on it, the other LNB's need to be alinged with the arc of the satellites across the Clark belt, they are not in a straight line.

This all depends on your location, some LNB's on one side of the center may need to go higher, while the others on the other side may need to go lower, this all depends on the satellite your looking at for the center bird, and its position in the arc, if at the top of the arc there will very little offset, if way to one sde there will be a lot of offset. (above or below center)

One other possible problem is beamwidth of the dish, does it have the beamwidth to handle multiple LNB's left and right of center, some do some dont, look at the dishes manufactures spec's for this, if the beamwidth is too small the outside LNB's will suffer from signal loss.
 
Channel Hopper

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Pedant hat on

At the equator they would be in a straight line.

/Pedant hat on
 
Terryl

Terryl

Specialist Contributor
Messages
2,559
My Satellite Setup
OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
My Location
Deep in the Boonies in the central Sierra Nevada mountains of California.
And your dish would be an upside down umbrella, making a nice birds nest.:-rofl2 This is where a nice mesh dish is usefull, wont fill up with rain water.
 
Channel Hopper

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All installations I have carried out down near the tropics have had holes drilled at strategic points.
 
Terryl

Terryl

Specialist Contributor
Messages
2,559
My Satellite Setup
OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
My Location
Deep in the Boonies in the central Sierra Nevada mountains of California.
Big dishes I did in Columbia (dont ask) actually had gutter type down spouts, but still collected junk and had to be cleaned often.
 
LeBelge

LeBelge

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2x Triax TD 110, Edision OS Mio 4K, Edision Primo, Vu+ Zero
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Belguim
Channel Hopper

Channel Hopper

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My Satellite Setup
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