Can an LNB be a C band/KU band combo?

K

kippysat

Donating Member
Messages
250
Hello All,

Apologies if this question has been asked before. I searched and couldn't find it.

Is is possible for an LNB to be designed to capture and distribute both C Band and KU Band signals
in the same structure?

Thus having multiple outputs with one+ distributing the C Band and the other outputs wit one+ distributing the KU Band.

Do any LNBs exist like this or would it be possible to manufacture such an LNB?
 
M

moonbase

VIP
Donating Member
Messages
543
These dual band LNB's work but at the expense of one of the bands suffering degraded performance.

Another option is to have two separate LNB's on the dish with one of them as the centrally focused LNB and the other as a side car LNB.
Normally, the Ku-Band LNB is centrally focused and the C-Band LNB is the side car.

The side car LNB can be either to the side of the central LNB or it can be above the central LNB.
If the side card LNB is above the central LNB then dual axis control is needed to bring it into focus.

For anyone contemplating this, my advice would be to test the dish first with a C-Band LNB as the centrally focused LNB and take some signal level readings in dB.
This provides some benchmark signal levels to work from when setting up the side car assembly.

Personally, I would setup separate dishes, one for C-Band and another for Ku-Band and have done with it.
 
Last edited:
K

kippysat

Donating Member
Messages
250
moonbase said:
These dual band LNB's work but at the expense of one of the bands suffering degraded performance.

Another option is to have two separate LNB's on the dish with one of them as the centrally focused LNB and the other as a side car LNB.
Normaly, the Ku-Band LNB is centrally focused and the C-Band LNB is the side car.

The side car LNB can be either to the side of the central LNB or it can be above the central LNB.
If the side card LNB is above the central LNB then dual axis control is needed to bring it into focus.

For anyone contemplating this, my advice would be to test the dish first with a C-Band LNB as the centrally focused LNB and take some signal level readings in dB.
This provides some benchmark signal levels to work from when setting up the side car assembly.

Personally, I would setup separate dishes, one for C-Band and another for Ku-Band and have done with it.
Click to expand...
Thank you @moonbase

Great advice and suggestions. I will try them when it gets warmer and is less windy.
 
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