Directional Antenna for TVs: Outdoor Mounting Necessary? Indoor Use, Attic Height & Power Supply

Hello
I have three televisions at home, two of which have mesh antennas and the last new television has a directional antenna. I keep all the antennas in the attic at a height of about 8 meters. I have a problem with the directional antenna, I do not have range, I also do not have a power supply for it, the question is will it only work if it is installed outside the building?

I'm waiting for answers

regards Krzysztof

kielomaniak wrote:

I have a problem with the directional antenna, I do not have range, I also do not have a power supply for it,

More specifically, we ask that the lack of a power supply, as long as the antenna has an amplifier, causes the lack of any signal at its output (an amplifier that does not receive current is a perfect attenuator).

Włodzimierz Wojtiuk wrote:

kielomaniak wrote:

I have a problem with the directional antenna, I do not have range, I also do not have a power supply for it,

More specifically, we ask that the lack of a power supply, as long as the antenna has an amplifier, causes the lack of any signal at its output (an amplifier that does not receive current is a perfect attenuator).

I have an LB 2000 combo LTE antenna, https://www.ceneo.pl/58020243#tab=reviews

This antenna does not require a power supply, but you recommended buying a power supply in the store?

Your antenna does not have an amplifier, so no power supply is needed. The power supply powers the amplifier.

kielomaniak wrote:

did you recommend buying a power supply in the store?

I don't think he knew what he was saying.

Nothing is known further, because (in several places) they give an energy gain of 32 dB - which indicates the existence of an amplifier in the antenna, but also the same antenna here https://www.maxelektro.pl/sklep/karta-produktu/antena-lb2000 -libox, 28737.html? 48283659 has a given gain of 18 dB for UHF which suggests no amplifier.
A photo of the inside of the can would be nice

kielomaniak wrote:

I have three televisions at home, two of which have mesh antennas and the last new television has a directional antenna.

Why multiply antennas when you can properly connect all receivers to one - the best receiving one.

kielomaniak wrote:

I keep all the antennas in the attic

kielomaniak wrote:

will it only work if it is installed outside the building?

Any room is not a good "environment" for an antenna. It picks up the damped and diffused signal. In addition, the material of the roof and walls is important.
Mounting the antenna outdoors will certainly improve the signal parameters.

What I found about this antenna is:
"Gain: 32 dB (VHF 14dB - UHF 18 dB)"

Only what the line amplifier for the cable in the store could offer.

If you have a multimeter, then I advise you to check the readings on the diode measurement (after applying the test tips alternately) on the F socket at this antenna -> it will be known if the amplifier is there.

Włodzimierz Wojtiuk wrote:

Nothing is known further, because (in several places) they give an energy gain of 32 dB - which indicates the existence of an amplifier in the antenna

There is no amplifier. And this profit is mere marketing manipulation.

Quote:

Gain (dB)
VHF: 14
UHF: 18

14 + 18 = 32
Even when it is a gain in dBi, the values are greatly exaggerated - especially in the VHF band.

There is no amplifier in this antenna, I have one in one location and there is simply a balun. As for the main thread, as someone mentioned earlier, it is best to put the antenna outside, no one will guarantee its correct operation under the roof.

Since you have two mesh antennas, they certainly come with amplifiers and have power supplies. They do not mind being indoors, as the amplifier makes up for weaker signal. You can either buy an amplifier for the one that doesn't work, put it outside or replace it with a new mesh one.