andrews feed horn big dissapointment

***_stu_*** · 15-12-2006

I just got an inverto single lnb for my fibo 90cm fibo dish, and tbh I couldn't really see any improvement over the mti lnb that came with the dish. It is certainly not the 'wunderlnb' it has been for others.

I chucked the dish up last weekend, and haven't had the chance to tweak the dish alignment yet, so perhaps things may improve when I line it up properly, coz at the moment I am not getting much better performance than I did with an old 95cm dish and smart titanium lnb

***CROSSBONES*** · 15-12-2006

Probably out a bit m8, as with Gregorian and prime focus dishes, you have to be spot on.

***_stu_*** · 15-12-2006

Originally Posted by CROSSBONES

Probably out a bit m8, as with Gregorian and prime focus dishes, you have to be spot on.

Well I would be quite surprised if I had got it spot on in the first attempt, although I was very careful to get the pole vertical and also to set the scales correctly on the dish and polar mount.

We'll see tomorrow...

Likvid · 16-12-2006

Originally Posted by _stu_

I am not getting much better performance than I did with an old 95cm dish and smart titanium lnb

Then it must be something wrong with your dish, did you buy it new or used? might be warped if it's a old one.

***_stu_*** · 16-12-2006

Originally Posted by Likvid

Then it must be something wrong with your dish, did you buy it new or used? might be warped if it's a old one.

I got it used, but it isn't warped as far as I can tell. There are no dinks in the dish, nor can I see any variations in the main reflector shape and I collected it myself, so it couldn't have got damaged in transport. As I said, I haven't had chance to fine-tune the elevation etc, so it's most likely that it's not quite tracking the arc properly. I have been messing about with it this evening, and am getting a lot more channels on Amos and Sirius than before, although I don't seem to be getting as much on nilesat atm

However, the inverto lnb doesn't seem to be much of an improvement over the 0.6dB MTI one that came with the dish, and I am quite disappointed with it as I was under the impression that they were very good lnbs. I must have just been unlucky and got a duff one, but unfortunately I can't afford to buy another one to find out for sure...

***iwol*** · 16-12-2006

dont think its a dud i had 2 and both were poor the best i found was the invacom quad but even this wasnt earth shattering from the one i took off and that was adding feed horn as well

ndiqbal · 05-02-2009

Hi!
I have just read all 4 pages of this thread, but still seems to be unclear to which LNB/Feedhord performs the best with Andrews 1.2 Channel Master Dish.

I have the CM 1.2, with the old version of the Titanium .02LNB, which brings in some of the Vertical Transponders on Nilsat 7W, this is between 9.30pm and 11pm (UK Time). I am based in Manchester.

I would like to bring the thread back to live again and see what people are using to get the best of their CM 1.2 Dish.

Thanks

pedro2000uk · 05-02-2009

Originally Posted by ndiqbal

Hi!
I have just read all 4 pages of this thread, but still seems to be unclear to which LNB/Feedhord performs the best with Andrews 1.2 Channel Master Dish.

I have the CM 1.2, with the old version of the Titanium .02LNB, which brings in some of the Vertical Transponders on Nilsat 7W, this is between 9.30pm and 11pm (UK Time). I am based in Manchester.

I would like to bring the thread back to live again and see what people are using to get the best of their CM 1.2 Dish.

Thanks

The CM/asc feed horn can be very slightly restrictive because the dish & feed horn are designed for commercial use, normally on much stronger signals to give good 24/7 consistent service and so slightly less, rather than more noise at the edge is favoured in that case ... whereas, we want to milk every last drop for tiny signals like 7w here and 2d on the fringe, so you may gain a bit (only a bit) with a wider scala/ feedhorn illumination of the dish.... sometimes an LNBf can do that and sometimes it's the same or worse.... or the lnb inside is performing better................ or not....

ndiqbal · 09-02-2009

pedro2000uk - Thanks for your info. I am getting a few picture braks on 7W on all the vertical channels. Horizontal is not in sight, due to the beam.

I am using the 1st edition on the Titanium 0.2LNB. with my CM 1.2 dish. With this set-up, should I get a better signal on this bird. I only require 4-5% signal so then I would have a watchable picture.

pedro2000uk I see that you can view a large arc. I would like to know if you can pick-up any channels on the ****** satellite at 38E and also any C-band channels on 68.5E?

Once again thanks for your input. I am tempted to buy myself a C120 LNB and the CM Feedhorn, but if the gain is not noticeable, then its not worth spending £60-£80.

Thanks again.

***Huevos*** · 10-06-2009

Originally Posted by ndiqbal

I am tempted to buy myself a C120 LNB and the CM Feedhorn, but if the gain is not noticeable, then its not worth spending £60-£80.

I used a CM feedhorn and Invacom C120 quad on my dish for a while. Tried it in all positions (in, out, etc). My meter has C/N and BER so it's really easy to compare to LNBs. Anyway the CM feedhorn has been relegated to conversation piece and paperweight (stops my desk fan blowing everything away). And the dish now has an Inverto Black Ultra LNB which is great for Astra 2D. Can receive BBC1 24 hours a day now which is pretty good for a 1.5m dish around here.

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andrews feed horn big dissapointment Information exchange on LNBs, Single satellite, motorised and multi-satellite systems. DiSEqC switches, positioners, motors, actuators, dish-alignment etc.

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