How to find out where is the internal antenna in zxhn h108n router motherboard?

[dkarm]

i need to add external antena to my old router and i've seen someone did it before in youtube vidoe but i can't find it anymore

 

[ColinTaylor]

Is this your hardware version?

https://fccid.io/Q78-ZXHNH108N/Internal-Photos/Internal-Photos-1584823.pdf

 

[dkarm]

Is this your hardware version?

https://fccid.io/Q78-ZXHNH108N/Internal-Photos/Internal-Photos-1584823.pdf

no this mine

 

[ColinTaylor]

Do you have a higher resolution picture?

From a google search it looks like that model has two antennas. They appear to be where I've marked them in the picture below.

 

[dkarm]

so can i add one like this insted of

Do you have a higher resolution picture?

From a google search it looks like that model has two antennas. They appear to be where I've marked them in the picture below.
View attachment 53352

this's the best res i can get i hope it's good to u

so can i add external antena like this to it and how ?

 

[ColinTaylor]

Your pictures are still much too low res to be certain. But my guess is that the grey coax cable going from top to bottom is taking one of the radio's outputs to the antenna that's etched onto the PCB at the bottom right. You could possibly desolder that coax cable at the bottom end and connect it to an external antenna. Be careful not to bridge the centre wire to outer screen when doing this. These cables are very thin and difficult to work with if you're not already proficient with soldering.

See how the grey cable is connected to an external antenna in this picture of a different router:

https://imgur.com/FiMZHCU

 

[Greg72]

You would add it where the existing internal one is at or even better just us a external AP vs modifying that equipment.

 

[sfx2000]

Do you have a higher resolution picture?

From a google search it looks like that model has two antennas. They appear to be where I've marked them in the picture below.

You have what you need right here - there's two PIFA antennas - one is the bent metal, and the other is part of the circuit board...

I would recommend not playing around with the RF solution here - as the antennas are already different, they've been matched to provide the appropriate level of performance with a balanced uplink/downlink.

Playing around with the radiated solution here likely will not improve performance - rather it will degrade things...