Thread: Test, Comparison, and Review WS International DMX741 C/Ku LNBF

Thanks for the answer. I have been wondering if it is worth trying to set up a co-rotor for a small or mini-bud versus the one piece unit. Perhaps it will be worth experimenting and I'll give it a try. Thanks again!

I have noticed that some channels have better signal quality than others. So....once the polarities and best picture possible have been set at installation of the units, how does a person adjust the skew from the satellite receiver. Do you have to go back outside and make adjustments to the skew on the BSC or DMX while its on the dish..

Do you have to go back outside and readjust the skew? Whereas, the skew can be managed in the house with a Cororotor.

I recieved my DMX741, instead of the ordered DMX241. That was fustrating, since I wanted just the C-Band. The small dielectric plate was to come with the DMX741 was not in the package, and wonder if it is installed already?
I do not have scaler ring arms, so I e-mailed WSI about the usage of buttonhook, that was two days ago and no message reply.
They did not have instructions with the product, so I had to go to their web-site and see their PDF instructions.
Someone told another member that the scale on this product was in tenths. But it was from mouth to back,,,2, 0, 8, 6, 4, 2. Well Like stated b-4 I have a .278 F/D so where would I aprxx set it?
I thank this web-site for reviews and help generated from all the members.

the dialectic plate is only used for circular polarity satellites which are over the Atlantic

In this digital & 8PSK world, I'd like to see some numbers for the LNB LO freq stability.

From looking at the numbers in the first post of this thread it appears that the DMX741 LNBF does not perform quite as well as the co-rotor feedhorn/LNB setup on C band and even worse on Ku band. Appears to lose about 10% quality on average on C-band.

I have a 7.5 ft. dish and need all the signal quality I can get to pull in the DVB-S2/8PSK feeds nowadays (still can't get all of them). Not only does 8PSK seem to require better/more signal but also the uplinkers seem to want to use the higher FECs (that hurts too - A double whammy). So I know I would do better if I had a 10 ft. dish.

That said, would it be a waste of time for me to try to use a DMX741 LNBF in place of my conventional feedhorn/LNB and hope to get at least what I do now? It sort of looks that way.

Is the DMX741 the best available LNBF for replacing a conventional feedhorn/LNB? Are there others that might do better even though they might be more expensive?

Your responses will be appreciated.

DRCars

Originally Posted by Desertnight

I have noticed that some channels have better signal quality than others. So....once the polarities and best picture possible have been set at installation of the units, how does a person adjust the skew from the satellite receiver. Do you have to go back outside and make adjustments to the skew on the BSC or DMX while its on the dish..

Do you have to go back outside and readjust the skew? Whereas, the skew can be managed in the house with a Cororotor.

Once the lnb skew is correctly set at the dish, you don't need to mess with it. As the dish moves across the arc, it rotates. That keeps the proper skew for all birds. Some birds seem to have wierd skew, or some have reported anyways. I myself have not had that problem. I run the DMX742 on a 10 foot dish. (Button hook mount.) I am very pleased with it however it was a little touchy when setting it up. I have marked improvements in both C and Ku signals over the Corotor that was replaced. Have a great day!

I do not have scaler ring arms, so I e-mailed WSI about the usage of buttonhook, that was two days ago and no message reply.

I have a button hook mount. The scaler plate that comes with the lnbf is setup for either hook or arms as it has two sets of holes to mount it with. Have a great day!