In-line Amplifier

amirali_esh

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Hi all,

I have two questions about in-line amplifiers :


1) Should I install in-line amplifiers in middle of the cable or at the end of the cable before the recevier?

2) Is it possible to cascade two in-line amplifiers to achieve more amplification?


Thanks
 

PaulR

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Amplifiers are really not to be recommende but if you MUST use one it should go near the satellite dish or aerial.

Why do you think you need and amplifier? They aren't a substitute for a weak signal, they are only useful for overcoming excessive loss in the downlead. And to be honest it's better policy to change to a lower loss cable.

PaulR
 

rolfw

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As PaulR says, they are no substitute for a weak signal and will probably make things worse on a normal cable run. I have fitted the occasional one on 40/50m cable runs and have heard that it is best in the middle of the cable run, but have fitted mine near the LNB and have received reasonable results.

There is apparently a good technical reason for fitting in the middle, perhaps to do with signal noise.
 

amirali_esh

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I have a problem which is discussed in this thread. I am thinking maybe in-line amplifier can fix my problem.
 

rolfw

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Only if you have a long cable run, which you don't comment on in the thread you mention or this thread.

PS. Cascading them would pretty much be a no no.
 

rossy

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Just as a side issue. How much difference can using good quality satellite cable versus regular coaxial cable on say a 40 foot run from dish to Receiver? What cable quality do you reckon to be the most suitable and affordable?
Thanks



PaulR said:
Amplifiers are really not to be recommende but if you MUST use one it should go near the satellite dish or aerial.

Why do you think you need and amplifier? They aren't a substitute for a weak signal, they are only useful for overcoming excessive loss in the downlead. And to be honest it's better policy to change to a lower loss cable.

PaulR
 

rolfw

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The difference gained by switching from CT100 or equivalent to say CT125, will be about 5 DB over 100m, so is not going to make huge differences over a 30m run, but of course could be critical on the 100m run.
 
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