Help with antenna

[boxito]

Hi I have an ASUS (RT-AC68U) Wireless-AC1900 Dual-Band Gigabit Router
But the signal get week on the second floor I was thinking on buying an antenna and see this models
TP-LINK TL-ANT2409A and Asus WL-ANT-157 Antenna
Do you think one of this will solve my problem or is better another model

Thanks

 

[Mick243]

Just adding an aftermarket antenna is unlikeley to give great benefit upstairs, a better option would be adding an extra access point up there somewhere you can get a network cable to

 

[azazel1024]

No, it will actually make it worse (most likely). The higher the signal gain of the antenna, the flatter the radiation pattern. Picture it as a giant donut. A higher gain antenna produces a flatter, but wider donut. A lower gain antenna produces a taller, but narrower donut.

So a higher gain antenna will help out with things on the floor that the router is located on, but make it worse for things above and below the router. A lower gain antenna, the opposite. Of course there are trade offs, go low gain, and it just make it worse for EVERYTHING.

Generally 5dBi antennas (what the Asus has) are generally the sweet spot for providing true omnidirectional coverage. Higher gain makes it crappy above and lower gain generally makes everything on the same level and above crappier.

You need a second access point/router on your second level if you have coverage issues. That or relocate your current router to be more centrally located if you can.

 

[boxito]

Just adding an aftermarket antenna is unlikeley to give great benefit upstairs, a better option would be adding an extra access point up there somewhere you can get a network cable to

Thanks for the Help

 

[boxito]

No, it will actually make it worse (most likely). The higher the signal gain of the antenna, the flatter the radiation pattern. Picture it as a giant donut. A higher gain antenna produces a flatter, but wider donut. A lower gain antenna produces a taller, but narrower donut.

So a higher gain antenna will help out with things on the floor that the router is located on, but make it worse for things above and below the router. A lower gain antenna, the opposite. Of course there are trade offs, go low gain, and it just make it worse for EVERYTHING.

Generally 5dBi antennas (what the Asus has) are generally the sweet spot for providing true omnidirectional coverage. Higher gain makes it crappy above and lower gain generally makes everything on the same level and above crappier.

You need a second access point/router on your second level if you have coverage issues. That or relocate your current router to be more centrally located if you can.

Thanks will try that

 

[stevech]

Add an access point.

Antenna changes won't cure the seriously weak signal.

And, as said above, with omni-directional antennas, the more gain, the more the pattern changes from a sphere to a doughnut to a half-bagel. Visualize this is the vertical.