Increase signal

[parsonline]

Re: Increase signal

if you dont use switch, its mean you must use of one sat so you need to motor for change sat but i recommend you use high size dish and strong lnb and also use switch

[kalpikos]

Re: Increase signal

I use many Diseqc switches and a long cable (>30m)
so I can tell you for sure that I have a significant signal loss.

I have found on the net a sat amplifier.
The cost is about 5E, and promise that can reduce the signal loss.
Does anyone know if they work?

[rizwan]

Re: Increase signal

if you dont use switch, its mean you must use of one sat so you need to motor for change sat but i recommend you use high size dish and strong lnb and also use switch

I already have a large Dish , about 3.65 M . I dont have a Disec positioner with my motorized dish

[BlueIsMyColor]

Re: Increase signal

I use many Diseqc switches and a long cable (>30m)
so I can tell you for sure that I have a significant signal loss.

I have found on the net a sat amplifier.
The cost is about 5E, and promise that can reduce the signal loss.
Does anyone know if they work?

I have read this:

Will an LNB amplifier improve my signal/picture?

Briefly, if you are using more than 35 metres of the correct double-shielded cable, an amplifier may help.

If your signal quality is no better when receiver is connected to your LNB with much less than 35 metres of cable, then an in-line amplifier will not help. The amplifier will give no benefit as it amplifies only what is there - signal plus noise - and adds more noise.

To spell it out: Connect your receiver as close to the dish as possible. If the signal quality is improved then an amplifier placed somewhere between the LNB and receiver should help. Try it after 5 metres from the LNB, 15 metres, 30 metres, to determine the best position. Bear in mind it requires a little power from the LNB supply.

[Clark197]

Re: Increase signal

I use many Diseqc switches and a long cable (>30m)
so I can tell you for sure that I have a significant signal loss.

I have found on the net a sat amplifier.
The cost is about 5E, and promise that can reduce the signal loss.
Does anyone know if they work?

The Proble with sat amplifier ist that all you find on the market are pasiv. They increase signal and noise together.
It can help only if you have a very poor signal quality(belong 30 % ). but If your signalquality are above 60-70% they are useless.
RF Signal Filtering is very difficult and very expensiv. You must find & fight against the problem with good Cable from dish to receiver and good dish too.

[pan1300]

Re: Increase signal

hi guys

little comment: I noticed the 'shown' signal quality can depend on the stb, when I look with box 1 it shows eg 80%, as with same setup it shows eg only 50% with box 2 - ok, probably some boxbug, but just want to say: don't only look at the % you see on the screen, as it may not be representative or correct.

[BlueIsMyColor]

Re: Increase signal

hi guys

little comment: I noticed the 'shown' signal quality can depend on the stb, when I look with box 1 it shows eg 80%, as with same setup it shows eg only 50% with box 2 - ok, probably some boxbug, but just want to say: don't only look at the % you see on the screen, as it may not be representative or correct.

It depends of the tuner sensibility.

[kalpikos]

Re: Increase signal

Try it after 5 metres from the LNB, 15 metres, 30 metres, to determine the best position.:

What does our friend want to say with that?
to start cutting the cable to 5m, then to 15m, then to 30m.... in order to find the best position?

This is not a good idea
I know , and it's tested by me, that if I cut the cable then I will have further signal loss.
so, making a cable of more than 30m for rubbish starting cutting it for 5 or 10m , I think it's not a very good solution

I read about noise that added to my signal, if I use this signal amplifier.
Why this happens?

[rizwan]

Re: Increase signal

There is no trusted test report about Lnb and about STB as to find correct one to full fill the need and for those who live in fringe area to find proper gadgets

[Clark197]

Re: Increase signal

I read about noise that added to my signal, if I use this signal amplifier.
Why this happens?

signal amplifier are use and are only good to compensate signal-loss over long cable. Because the amplifier don't know how long your cable is(pasiv amplifier) the make some multiplication on the signal.
An example with analog signal:
if you buy an amplifier with multiplicator factor from 1.66.

And use this factor for 3 differents users:
Noise/Quality
User A: For 0.05/0.3 (30%)=> 0.08/0.5 (50%)
User B: For 0.08/0.6 (60%) => 0.13/0.99 (99%)
User C: For 0.1/0.9 (90%) => 0.16/1 (100%)

if you compare this result you will see that user A start to watch something now,
User C now has a bad signal quality than User B.

[Mobley3]

Re: Increase signal

I read about noise that added to my signal, if I use this signal amplifier.
Why this happens?

Unfortunately an Amplifier can not tell the difference between the wanted and the unwanted signal so therefore it amplifies then in equal measure, so it sees the noise as a signal, this is a simple explanation, there are ways to minimise this by adding filters etc. hope this helps.

Regards Mobley 3

[herrr]

Re: Increase signal

The best thing, as a matter of facts, is to put amplifier at the beginning of the line.
This way input signal will be cleaner and noise of cable will not be amplified.
This is normal in terrestrial installation, but with sat you have to pay even more attention with level, not to have an input signal exceeding amplifier limits.

[parsonline]

Re: Increase signal

and also attention some tuners ae so weak. many tuners hd receivers commonly are weaker than sd receivers so you must test with others receivers.

[kalpikos]

Re: Increase signal

I will try to put this signal amplifier after Diseqc 4x1.
I think is the most easy way.

[rizwan]

Re: Increase signal

I just try Direct connection, LNB to STB , without Disec, but no significant change. Not much than 1%