is feedhorn needed for better reception of c band signals?

I

italy2006

Regular Member
My Satellite Setup
starsat
My Location
iran
is feedhorn needed for better reception of c band signals?
hi
i have an offset dish
i want to get asiasat.
my question is
is feed horn needed for better reception of c band signals on offset dish?
does it inncrease signal?
 
The ring around the front of the "C" band LNB is called a Scala ring, is this what you are talking about???

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All newer style LNB's have feed horns, if you have a very old "C" band dish then it needs a feed horn, but the newer style "C" band LNB's do not need one as they are built in.

All the feed horn does is channel the signals down to the LNB's internal antennas, it does not increase the signal strength.

The only way to increase the signal on a satellite is with a bigger dish, better LNB or better coax. (if the run is too long, over 200 feet)
 
Which Asiasat? There are at least 2. In either case you are going to need at least a 1.2m dish for reliable reception according to the footprint maps on the Flysat site. If you are in western Iran Asiasat 9 at 122E may be out of reach - although looking at the channel lists I assume its going to be Asiasat 7 at 105E
 
both of them.
Terryl said:
The ring around the front of the "C" band LNB is called a Scala ring, is this what you are talking about???

View attachment 119358

All newer style LNB's have feed horns, if you have a very old "C" band dish then it needs a feed horn, but the newer style "C" band LNB's do not need one as they are built in.

All the feed horn does is channel the signals down to the LNB's internal antennas, it does not increase the signal strength.

The only way to increase the signal on a satellite is with a bigger dish, better LNB or better coax. (if the run is too long, over 200 feet)
Click to expand...
yes. I mean conical feedhorn. but in this picture is flat feed horn not conical model.
 
I wa
Analoguesat said:
Which Asiasat? There are at least 2. In either case you are going to need at least a 1.2m dish for reliable reception according to the footprint maps on the Flysat site. If you are in western Iran Asiasat 9 at 122E may be out of reach - although looking at the channel lists I assume its going to be Asiasat 7 at 105E
Click to expand...
I want to receive 100 and 105 degree. i receive 200 channels of asiast 105 degree without feedhorn on 110 cm dish.
 
You may need 2 dishes - I doubt you will get 5 degree separation on c-band lnbs even without the scalar rings. You certainly wont with the scalars fitted.

Get a set of scalar rings & see if that brings one of the satellites in better.
 
With an offset dish you would be better off with a conical feed, some of them have a sealed cap with the advantages of keeping out rain and dust from the important bits.
 
What LNB do you have now? With or without feedhorn fixed to it? (Photo?)

As I understand it, the (position of the) feed should match the illumination angle (or say: f/D-equivalent) of the offset dish.
Most offset dishes have an effective f/D of about 0.65, I read.
So I'm not sure if a separate feedhorn or scalar ring would be helpful.

But I'm no expert at this....

Greetz,
A33
 
Hi
I find the blue - stepped scalar C-Band-Conical-Scalar-Ring-Feedhorn-with-LNB-Holder-for-Offset-Dish.jpg_640x640.webp gives better results than the - smooth cone scalar - on my 1.8 metre Channel master offset dish ... either will almost certainly optimize your reception somewhat .. once you have experimented to find the best position for the l.n.b. in its holder - in relation to - the best position for the scalar on the l.n.b barrel.

C Band Conical Scalar Ring Feedhorn with LNB Holder for Offset Dish-in Satellite TV Receiver from Consumer Electronics on Aliexpress.com | Alibaba Group
 
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I use this eurostar lnb on offset dish. I want to know should I use conical scaler ring or not?
 

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Try it and see, post your findings.
 
italy2006 said:
I use this eurostar lnb on offset dish. I want to know should I use conical scaler ring or not?
Click to expand...

Yes - that is the type of scalar to use for that type of l.n.b. on your offset dish .... there is a good chance it will improve reception ... once you have found the best position for the scalar on the l.n.b barrel.
 
italy2006 said:
I use this eurostar lnb on offset dish. I want to know should I use conical scaler ring or not?
Click to expand...
Is the LNB mounted to the dish with the scalar ring via the mounting arms or some other way?

If by the ring then you still need the flat one.
 
i have an offset dish
i want to get asiasat.
my question is
is feed horn needed for better reception of c band signals on offset dish?

Its an offset dish Terryl, do you know of prime focus ring suppliers with offset bracket holders ?

There are plenty of 'yee-hah! - companies out there.

"Narrow" LNB's??
 
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Hi Channel Hopper,
To receive Asiasat you really have to live in Eastern Europe.
In the middle of Ukraine or Moldova,
even from Poland it's impossible.
Which region do you want to receive Asiasat?
 
italy2006 said:
Iran
Click to expand...
Here is a link to satbeams.com, it is an active footprint map for Asiasat, just zoom into your location where you want to view that satellite and click on it, this will give you an estimated dish size needed for that location for error free signals on Asiasat.

Code: 
https://satbeams.com/footprints?norad=27718
 
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