Need Help with Strange Problem on C-Band Dual DMX242 LNB

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duddingc

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Dec 11, 2010
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Senegal
Hello, I have a working 2.4m dish in Africa pulling in AFN signals from the 10-02 Intelsat. I have strong and consistent signal in all weather with the single Diplosat LNB I used before.

My troubles began when I switched to a DMX242 Twin C Band LNBF from WSI. While I recieve a strong signal on one decoder, on my second decoder I get a very broken digital signal with frequent artifacts that overwhelm the picture from time to time.

Switching cables results in the broken picture appearing on the first decoder, so I have ruled out decoder or cabling issues. Signal strength on the good image runs at 82+ and a steady 80 on the bad, using an D9845 AFN decoder by Cisco.

I am running both cables from the dual LNB outputs to the decoders...do I need a multiswitch to clear this up? Or am I just short of a good signal that I can clear this up
by adjusting the dish?

Many thanks in advance for your help!

Best wishes and happy holidays to those of you in colder climates...
 
Sounds like you have done a good troubleshoot. I would say the lnbf has one bad output...I just bought a dmx242 - have not installed it yet. Hope mine is good .
 
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