Improve loft aerial signal

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Bk456

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You're already boosting it with the T180 splitter mate, putting it through another stage will likely just further amplify the errors.
 
chookey said:
You're already boosting it with the T180 splitter mate, putting it through another stage will likely just further amplify the errors.
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I'm confused about aerial into RF modulator.

Depending on the type of aerial, a directional or higher gain one might do well.
 
nara said:
Same here, but I don't really know enough about this stuff.
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The way I understand RF modulators is that they turn composite into RF but it could just be terminology.

An aerial into [something]? What's the something, what is the first thing the aerial connects to?

Oh, is @Bk456 meaning from the TV, as in reverse? I think the signal convention might have got messed up, within the post, in that case.
 
Spectre said:
I'm confused about aerial into RF modulator.

Depending on the type of aerial, a directional or higher gain one might do well.
Click to expand...
I assumed that the rf converter was connected to his receiver and then on to a bedroom tv or such. Reading it again he does say he's connected it to the aerial and then the booster.
I imagine Bk456 will enlighten us later
 
The "T" Series tvLINK® compatible TV Booster Splitters are designed to amplify the TV signals in a poor signal area, as well as distributing the TV signals, including the Sky Digital channel around the home.
The T120 & T140 (2 Way & 4 Way) can either be powered by the Sky Digibox or via a separate mains power supply. The T180 (8 Way) can only be powered by the mains power supply which is supplied with the unit.
Each booster is designed to carry the return signal from the tvLINK® back to the Sky Digibox. This enables the viewer to watch and control from several locations.
 
Remember though, with any amplifier, you need a good clear signal going into it. If the signal going in, is crap, it's only going to amplify crap. :)
 
The aerial coax is plugged directly into the rf modulator aerial input. Then coax out from rf modulator to splitter.

An rf modulator allows distribution of a satellite box with no RF, it’s basically a scart to RF converter
 
Bk456 said:
The aerial coax is plugged directly into the rf modulator aerial input. Then coax out from rf modulator to splitter.

An rf modulator allows distribution of a satellite box with no RF, it’s basically a scart to RF converter
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Sorry mate, I'm a little confused.

Can you describe your setup exactly. From loft ariel to TV. :)

(What are you using the modulator for?
 
Is it

Aerial -> RF Modulator -> Splitter -> TV

If so try bypassing the RF Modulator and see if that helps
 
I think this is the basic idea. Downstairs tv limited to output from stb but other tv's on the system have the combined signal so can watch either stb channel or freeview. Something like that anyway :)
 

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Depending on the angle of the aerial vs. the roof, it's possible that the incoming TV signal is being 'skewed' by the roof.
If the TV signal is horizontally polarised for instance, it may not still be horizontal by the time it passes through your roof tiles/slates, so you could experiment by altering the angle (from flat) of the aerial.
That amplifier from Amazon is unlikely to make any improvement unless you place it in the attic as close as possible to the aerial - in which case you are likely to see some benefit. (Placing it close to the aerial means you are boosting the purest part of the signal from the aerial without amplifying any noise that is introduced in the cable on its way down). As @dar1437 says the amplifier only amplifies what you put into it.
If you don't have easy access to power near the aerial you can use a "mast-head" amplifier whereby the amplifier sits by the aerial but it is powered by a separate power unit which usually sits behind the TV where you have easy access to power. This system cleverly sends the power (usually 24V) up the same co-ax as the signal comes down, so no need for extra wiring.
Look for one with a 4G filter.
 
JonMMM said:
Is it

Aerial -> RF Modulator -> Splitter -> TV

If so try bypassing the RF Modulator and see if that helps
Click to expand...

I can't get my head round that @JonMMM as the aerial is RF. So that, to me, looks like RF into a RF modulator. I know that is done sometimes but in the case of TV, I can't see it being of any use.
 
Spectre said:
I can't get my head round that @JonMMM as the aerial is RF. So that, to me, looks like RF into a RF modulator. I know that is done sometimes but in the case of TV, I can't see it being of any use.
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The rf passes through the modulator to the stb. The rf out from the stb is passed back into the modulator and combines with the aerial rf. The other devices can then tune into freeview or the channel from the stb.
I'm not well versed in distribution but I think it works something like that.
 
Spectre said:
I can't get my head round that @JonMMM as the aerial is RF. So that, to me, looks like RF into a RF modulator. I know that is done sometimes but in the case of TV, I can't see it being of any use.
Click to expand...

Thats sort of what I was saying thus to bypass the RF Modulator
 
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