Captain Jack
Burnt out human
- Joined
- Oct 21, 2006
- Messages
- 11,817
- Reaction score
- 7,998
- Points
- 113
- My Satellite Setup
- See signature
- My Location
- North Somerset
Get a room you two
Get a room you two
Ohhh you are awful..but I like you..He started it , you can't take him anywhere
That's just it..the Ku LNB is static on the boom arm, not sure I follow what you mean? The shadow is very minimal and makes no difference whatsoever to C Band reception.It is not shadowing the LNB throat at all..If I was to put the Ku LNB back on the flywheel I would lose the dual optics..Very cool! That Ku LNB shadow on the C LNB does bug me though (OCD). I wonder if it's worth thinking about pushing the motor back towards the dish a bit and then attaching both the Ku LNB and the sub-reflector as one unit on the flywheel.
It would still be a double reflector. You would put both the Ku lnb and the sub reflector on the motor and have it rotate together. Maybe I need a drawing to explain what I meanThat's just it..the Ku LNB is static on the boom arm, not sure I follow what you mean? The shadow is very minimal and makes no difference whatsoever to C Band reception.It is not shadowing the LNB throat at all..If I was to put the Ku LNB back on the flywheel I would lose the dual optics..
Do you mean replace the Ku LNB on the boom arm with C Band, then have the sub and Ku on the motor?It would still be a double reflector. You would put both the Ku lnb and the sub reflector on the motor and have it rotate together. Maybe I need a drawing to explain what I mean
I think @Captain Jack means like in this video.Do you mean replace the Ku LNB on the boom arm with C Band, then have the sub and Ku on the motor?
Yes, I did look at this option, but it would be a major redesign job. It all works the way it is..I think also a full size C Band conical scalar would block the signal from the sub. You can see Wim is using smaller scalar plates possibly for that reason..
I see what you are saying but would using the sub reflector remove the need for the conical scaler as the sub reflector is managing the ilumination of the main reflector? I see the original Fibo ku feed is just a conical horn not a corrugated feed horn.Yes, I did look at this option, but it would be a major redesign job. It all works the way it is..I think also a full size C Band conical scalar would block the signal from the sub. You can see Wim is using smaller scalar plates possibly for that reason..
I am 78% sure that it's corrugated inside.I see what you are saying but would using the sub reflector remove the need for the conical scaler as the sub reflector is managing the ilumination of the main reflector? I see the original Fibo ku feed is just a conical horn not a corrugated feed horn.
Yes it is..I am 78% sure that it's corrugated inside.
Ahh, I see what you mean now..
OK. I didnt realise that.Yes it is..
Certainly possibe CJ. To maintain the correct angle ( the sub and feedhorn holder are threaded at different angles) and distance from the sub to the Feedhorn I would probably have to cut the original boom arm, not ideal, but if anyboby has a spare boom or could fabricate one, (Rimnants, Trust) then certainly worth a shot.
I wonder if C band would also benefit from a dual reflector set up though, even without a full feedhorn.Yes, I did look at this option, but it would be a major redesign job. It all works the way it is..I think also a full size C Band conical scalar would block the signal from the sub. You can see Wim is using smaller scalar plates possibly for that reason..