From a rualter to a wireless TV set-top box, what equipment should you use?

Question

WiFi

We have:
Internet provider beeline
1. An old dir-300 rualter (most likely to be replaced) is located at the front door, a wire from the entrance is connected to it.
2. TV set-top box in the room at a distance of 5-6 meters in a straight line (through two concrete walls)
Task:
Provide connection to the TV set-top box without using a direct Internet connection with a cable.
Provide the ability to connect multiple TV boxes.
I want to use the most budget solutions.
Possible solution I see:
Use a Wi-fi bridge, as far as I remember, this is a device that connects to the Wi-fi network of the apartment and has a regular output for the Internet wire. However, as far as I know, in order for the TV to work, it is necessary that it be transmitted over a specific port, and how to implement this in this case.
Beeline girl offers to pull the wire

Answer 1

1) The router is shit. You will not cook porridge with him 200%. And you need to take something really serious for 150 bucks. (In general, it's better to forget that there are Dlink and ASUS brands).
2) IP-TV is extremely hu * in working on a waffle. Of course, everything depends on the equipment and your funds, but if the air in the house is polluted, then NOTHING WILL SAVE you, no matter how much money you pour in.
Most not your case.
I used Mikrotik RouterBOARD mAP2nD for these purposes - it can be configured as a client. There is the same one at 5GHz, it will be even better, but the main router must accordingly support the five (and QUALITATIVELY !!! ).
The main router can also be taken as a microt, but the setup is not for the teapot and is not trivial. Dances with a tambourine are possible.
There are special devices from Netgear such as WNCE3001. Used previous/similar models and guano quality . A friend has an ASUS RP-AC68U
for a similar task . Works perfect(although there are no thick walls). That rare case when ASUS works, but I think you understand everything by the price tag ... A router for such a thing should cost about the same.
Proposes correctly. In the case of "cheap" and "working well" it will be cheaper and more reliable to drill a concrete wall behind the plinth.
PS
The problem with wifi is that NOBODY NEVER guarantees you its quality work. If a "specialist" comes to you and says "Master, now everything will be awesome for you - I guarantee it" - fuck him. The waffle has a lot of nuances that can affect the quality. Starting from the noise on the channels (by the way, not only the Wi-Fi itself can score frequencies) and ending with the location of the points.
For example, cases are quite likely when moving the router by 20-30 cm dramatically changes the reception quality.