Testing a TV preamp and amplifier installation

CHANAL -  
Andy31200 Posted messages 26918 Registration date   Status Modérateur Last intervention   -
Hello,
I would like to know how to test a preamp and a TV amplifier before buying a new one if the one I have is faulty because I'm receiving the channels very poorly?
Thank you

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2 réponses

jeannets Posted messages 28331 Registration date   Status Contributeur Last intervention   Ambassadeur 6 597
 
Hello,

Let's say that with digital broadcasting, there's no point in amplifying, you just amplify the noise with it...

It's better to improve the installation... A good antenna with a good gain (17 dB without an amplifier is good) well oriented towards the right relay, clear of obstacles, and a good quality coaxial cable (17 or 19) directly to the TV, with no connectors at all.

If you're too far away or behind a mountain, it will be very difficult... But you can also see if your neighbors are receiving well and how they're doing it... only for those who receive well.
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CHANAL
 
Thank you for this response. My setup was working very well some time ago with a preamp and amplifier. I wanted to test this amplifier before considering redoing the entire installation. Running cables through the attic, dropping cables down two floors...
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Andy31200 Posted messages 26918 Registration date   Status Modérateur Last intervention   12 197
 
Hello,
Yes, and I would like to add that HD TNT is more demanding in terms of quantity as well as signal quality
The best option, if there are still no results with a standalone antenna as advised by Jeannets, would be to install a variable gain preamplifier (sometimes too much amplification can degrade the signal), this preamp should be LTE/4G filtered and placed as close to the antenna as possible.
Here is a good product for example:
https://www.ebay.fr/itm/Amplificateur-TNT-complet-JOHANSSON-exterieur-interieur-KIT-7328-fiches-F-/261244510074?hash=item3cd362df7a%3Ag%3Ac0gAAOxy6%7EBR3uv8

--
I call a spade a spade *
     *in French in the text
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CHANAL
 
Thank you for this response. Before intervening on the entire installation, I wanted to test the preamp and amp together to rule out this source of the problem.
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Andy31200 Posted messages 26918 Registration date   Status Modérateur Last intervention   12 197
 
You must mean power supply and preamp...
Check if you have power output from the power supply (coax cable going to the antenna).
1