Sky low quality on 8 way lnb

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Hi
i do satellite installs in spain, and i have to rectify a job run in by someone else,it's a 8 way lnb with all the 8 slots in use,it appears that the cable runs thru the house were complicated and therefore all the 8 cables have at least three places along the run where a coupler/barrel have been used.
when i test the signal at the satellite it is very good signal strength and picture quality is pretty good. however when i test at the other end of the cables the picture quality is very bad but signal strenghth is more or less the same as when tested at the dish.

Q. is the loss in picture quality a direct result of the couplers?

Q.is there anything else i could try or do ?

any advice would be greatly apreciated

the dish is 80cm (fine for this region of Spain) televes and the lnb is televes,and the signal is fine on all slots at sat end.

Thxs in advance:)

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aba

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is that 3 connectors in each run yes will drop signal 3 joins not good
and what coax and what length are they useing
 

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aba said:
is that 3 connectors in each run yes will drop signal 3 joins not good
and what coax and what length are they useing

yes its three connectors per run and probably an average of 40m runs
 

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sorry also the cable is televes seems very good quality evry thick and a good sheilding
 

Analoguesat

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Try a direct run of temporary cable from dish to receiver on each of the lnb outputs in turn. If the pic is then ok you are looking at replacing all the cabling......
 

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Analoguesat said:
Try a direct run of temporary cable from dish to receiver on each of the lnb outputs in turn. If the pic is then ok you are looking at replacing all the cabling......

thxs for that ... I already did that and its fine,i figured that the problem was the breaks,but it is only really bad in three rooms (ie:no itv). is there anyway of boosting signal for these three?...as i think re-running cables is nigh on impossible.
 

iwol

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hi what about trying an inline amp on the lnb run on one of those which is poor dont like them personally but in you case it might be worth trying good luck
 

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youa could also try swapping leads over at the lnb bacause some outputs on a 8 way lnb are stronger than others
 

aba

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40 m runs for that length you want some thing like ct 125
ct 100 / wf 100 / telleves coax is fine for runs upto about 25 m after that you want a lot better quility coax
 
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