DMX522 Dual KU Band LNBf

[Babadem]

Looking at the DMX522 LNBf, I noticed that one (left) of the dual ouput connector holes seems to be wider than the other (right). Is this larger output delibrate, and will it affect connectivity/signal in a negative manner?

[RDosetareh]

Actually, they are both the exact same size. The one on the left has black sharpie marked on it. It's from the factory. When they do their quality control test, they marke the connector with black marker to show it's been tested.

[Babadem]

Originally Posted by RDosetareh

Actually, they are both the exact same size. The one on the left has black sharpie marked on it. It's from the factory. When they do their quality control test, they marke the connector with black marker to show it's been tested.

Thanks for the insight!

[Babadem]

Originally Posted by Babadem

Looking at the DMX522 LNBf, I noticed that one (left) of the dual ouput connector holes seems to be wider than the other (right). Is this larger output delibrate, and will it affect connectivity/signal in a negative manner?

I just got a chance to install this LNBF on my 90cm dish late yesterday on AMC 4 @ 101° W. I always experience reduced signals (signal Q goes from 32 to almost 10 on a Viewsat ultra Q meter, 68 to 62 on Coolsat 5000) on Frequency 12060 H, 26700 SR late in the evenings, hence the use of DMX522 as an alternative. It should be noted that this was a multi LNB installation with 105°W as the main and 101°W as offset. Now, when I took out my old LNB with a 4.0 Signal Ratio and installed the DMX522 the signal on Transponder 12060H on 101°W disappeared, but all other strong transponders had high Qs. I tweaked the LNB in every which way, but no joy. Then, I disconnected the multiple LNb setup, and setup the DMX522 alone on the Dish, yet the best Q I could squeeze out of it was just 12 on my Viewsat Ultra, and the picture was breaking badly. Frustrated, I replaced the DMX522 with my old Orsat LNB with 4.0 Signal to noise ration, and boom it went to 40 and steady and no picture breakup. Dejected, I reset the LNBs at 101°W and 105°W using the old LNBs.

My question is........wasn't the DMX522 supposed to perform better in low signal situation like the scenario above since it claims to have a lower signal to noise ratio?

[KRLOS]

Originally Posted by Babadem

I just got a chance to install this LNBF on my 90cm dish late yesterday on AMC 4 @ 101° W. I always experience reduced signals (signal Q goes from 32 to almost 10 on a Viewsat ultra Q meter, 68 to 62 on Coolsat 5000) on Frequency 12060 H, 26700 SR late in the evenings, hence the use of DMX522 as an alternative. It should be noted that this was a multi LNB installation with 105°W as the main and 101°W as offset. Now, when I took out my old LNB with a 4.0 Signal Ratio and installed the DMX522 the signal on Transponder 12060H on 101°W disappeared, but all other strong transponders had high Qs. I tweaked the LNB in every which way, but no joy. Then, I disconnected the multiple LNb setup, and setup the DMX522 alone on the Dish, yet the best Q I could squeeze out of it was just 12 on my Viewsat Ultra, and the picture was breaking badly. Frustrated, I replaced the DMX522 with my old Orsat LNB with 4.0 Signal to noise ration, and boom it went to 40 and steady and no picture breakup. Dejected, I reset the LNBs at 101°W and 105°W using the old LNBs.

My question is........wasn't the DMX522 supposed to perform better in low signal situation like the scenario above since it claims to have a lower signal to noise ratio?

.............should be, I dont have that lnbf to make a test but i will tray to get one and see how work on my 90 cm dish with the same bird.

[Babadem]

Originally Posted by KRLOS

.............should be, I dont have that lnbf to make a test but i will tray to get one and see how work on my 90 cm dish with the same bird.

KRLOS, did you get a chance to test ?

[KRLOS]

Originally Posted by Babadem

KRLOS, did you get a chance to test ?

................nope,sorry, i'm pretty busy, let me see if next week i can do anything, have a good long weekend.

[jackwa]

Can anyone explane how to aim the DMX521 on a DN super dish? (do i aim it at the center of the dish?)
Sorry if this isnt posted in the right area

[KRLOS]

Originally Posted by jackwa

Can anyone explane how to aim the DMX521 on a DN super dish? (do i aim it at the center of the dish?)
Sorry if this isnt posted in the right area

the same way that the original DN lnbf are.

[jackwa]

Unfortunately I don't have the original one's.
Do you have any other ideas? Thanks, Jack