Are 5Ghz antennas compatible with 2.4Ghz?

Question

WiFi

I have a router with 4 antennas that works on 5 and 2.4 Ghz

If I turn on only the 2.4Ghz network, will all 4 antennas work???

For example, the Keenetic Air router

Answer 1

5 and 2.4 GHz are different frequencies and they need different antennas - they physically cannot work on the same antennas, since the optimal antenna length is a multiple of the wavelength, and since the frequency is different, the wavelength is different, therefore they must have different the larger the frequency, the smaller the wavelength and the smaller the size of the active elements of the antenna.

Answer 2

Any answer will not give you anything. You need real test results.

Answer 3

Lol, in general, 5 GHz and 2.4 GHz differ by almost 2 times, so if it is VERY hard, then the antenna can be made common for both bands.
In fact, the main problem there is not in the antenna, but in the "equipment" between the digital part and the antenna itself, it may or may not depend on it ...
But in general, do you have checkers or go? You need a normal connection, not the number of working antennas. IMHO, even 2 antennas are enough to solve any problems of reception and transmission (and even one can theoretically cause problems).
Although I strongly suspect there, in general, there may firstly be a general combination of the channels of all antennas and only then processing the total signal (otherwise it’s very unexpected for all antennas to first make separate receiving channels, and then at the same time solve collisions) ... although I’m far from modern circuit engineering =).
PS If you want to know more precisely, look for a circuit diagram =)=)=) and circuitry.
PSS In general, I am of the opinion that the number of antennas greater than 1 is generally a marketing ploy.

Answer 4

Most likely, only two antennas will work. But the exact answer can only give circuitry.