any one used C-band on offset dish with lnbf / my CM 1.2m project

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rd100

SatelliteGuys Family
Original poster
Sep 6, 2006
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Wales, UK
Any of you guys used c-band on a small offset dish with a lnbf if you have how did you get on any tips. I am in the uk and have ordered a panorama er861 13k lnbf and going to mod a my andrew channel master 1.2m dish to take a lnbf i will let you guys know how i get on.
 
im very interested i this also. i have a 1.8 meter offset dish that i wanted to use from haiti to view-
Telecadena 7 y 4 7 7777 7771 Sp off intelsat 1R at 45.0w
 
I used to read everything published here on the subject of small dishes and C-band reception.
The 4-foot dishes are interesting, in that they can get some signals, but really can't reject interference from adjacent satellites.
So, "do they work?" Yes ... but they are limited.
One of the users here has some comment in his signature about using a 4-foot dish for C-band.
It's better than nothing, but don't get your hopes up.

As for 6-foot dishes, one of the moderators here, Iceberg, has a center-fed 6-foot dish.
From his many reports, it sounds like that's the minimum size for North America.
Bigger would be better, but it gets by most of the time.
Not so good on 7/8 FEC transmissions, or in crowded parts of the sky.

Note that most prime focus LNBs are f/d of .4 or so, and most offset-feed dishes have an f/d of .6 or .7
This is a big problem putting typical .7 f/d Ku LNBs on prime focus dishes.
However, putting a .4 f/d C-band LNB on a .7 f/d offset feed 6' dish may be a lesser problem.
Users of offset-fed dishes generally seem to need conical scalers.
Maybe that is the big band aid. (?) :cool:
 
Is it possible? Yes it is.

Is it relliable? No....a lot of tweaking to do in the states. Some Sats are really strong and some aren't. Europe might be different.

Channelmaster makes a Cband feedhorn for a 1.2m. I suggest using that.

BTW, whatever lnb you do use, definately get a circular scaler ring. worth 20-40% across the board.

Keep this in mind.....you will want to go bigger. I'm at the point that I may scratch mine and just stick to KU.

Wife hates the 1.2m and will not allow larger :(
 
Actually been able to see DVB signals only.

I am using a Pansat 2700A reciever.

My Pansat 2300A can lock on better for some strange reason???:confused:
 
G23 is extremly strong (the best for smaller dishes IMO). I get some channels at 70+ quality. Satmex has some channels too. IA9 is out of my line of site but I do remember getting some pretty good signals when i tested the dish out front (w/o the circular ring AND with a older lnb).

Analog channels are MUCH easier to get with a 1.2. IA6 can be a little weak, but watchable at times. Otherwise, they are good to go on other sats.

Haven't tried on I805. What are you getting? If its not on lyngsat, send me a PM.
 
I have had great success getting C band on my 1.2m CM offset dish. One channel "World Harvest" I had to double check my connections thinking I was on KU band. It was so clear and the colors were fantastic.
 
Well i got the c-band prime focus lnb-f a few weeks ago and it worked well on my 1.2m offset andrews i will post some pics up later today,
 
I have gotten excellent results using a C/KU LNBF on my 1.2m CM dish.
 

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When I first installed the C/KU LNBF my KU reception was a lot worse than when I only had the KU LNBF installed. In fact, it was so bad that I uninstalled the C/KU LNBF and reinstalled the KU LNBF.

However, I then decided to give it another shot and reinstalled the C/KU LNBF and I am happy I did. With a lot of tweaking I now receive KU about 95% as good as when I used the KU lNBF alone. Hopefully with some more minor tweaking I will be able to receive KU 100% as good as when I had only the KU LNBF installed.
 
What tweaking did you have to do to improve the Ku band signal?

I hope your not going to say that you modified the LNB but cutting it or something like that.
 
What tweaking did you have to do to improve the Ku band signal?

I hope your not going to say that you modified the LNB but cutting it or something like that.


I can say with experience that cutting the LNB doesn't work :)

I wouldn't be supprised if Popcorn had to move the LNB further back to get the focal point correct
 
Actually by looking at his pictures a few posts above it looks like he has moved the LNB closer, but I will wait for him to respond. :)
 
similar situation?

I'm using a 922 w/ 8' and norsats C/Ku but due to neighbors tree G3 and X4 are blocked. I was hoping to maybe use a Ku only small dish to get just those two as I have NPS programming and most things have moved from G9 to G3. Everything I want to see is digital so will this set up work? I can handle it if you tell me no.
Thanks all.
 
enquiring minds want to know

With a lot of tweaking I now receive KU about 95% as good as when I used the KU lNBF alone.
I hope your not going to say that you modified the LNB but cutting it or something like that.
I don't care if he sent it out and had it gold plated! - :eek:
I've never seen anyone claim they got Ku that good on one of those dual band LNBs.
 
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