Replace router antennas with simpler style?

josephclemente

Occasional Visitor
Would it be crazy to replace a router's antennas with something much more basic looking?

I'd like to replace the massive antennas on my Asus GT-AX6000 (and maybe the RT-AX86U node) with something like this model:
https://www.amazon.com/dp/B082SH6QH6/?tag=snbforums-20

Looks exactly like the dual band antennas my motherboard came with. Length is 9.5cm to 10.5cm depending on the orientation.

I suspect the stock antennas are just excessive plastic. Or do routers have uniquely optimized antennas, and are not interchangeable?
 

JWoo

Senior Member
My experience is also that changing out the OEM antennas normally degrades performance.
 

JWoo

Senior Member
Doesn't the basic formula from Ham antenna's apply? 1/2 the length or 2x the length (of bandwidth).
Good article. I think the issue with aftermarket antennas is what's inside. As in the photo in your article, a large antenna housing can be deceiving. :)


1648129218821.png
 

Tech Junky

Very Senior Member
I used a couple of these:
1648132434829.png


on a QNAP AC2600 card to host it as an AP as the smaller antennas wouldn't have been optimally placed for broadcast. The base connectors allowed for better placement with the weight of the magnetic base it was stable. For ~$25 it was worthwhile and the performance was just as good as the ones supplied in the box.

RF can be tricky outside of WIFI applications though. For instance I picked up a scanner and was antenna hunting for something better than the OEM for specific reception on a newer radio system. I went with a tri-band antenna to hit the lower / middle / high bands specifically and that ran about $40. Thankfully though WIFI up to AX has stuck with the basics of 2.4/5 but 6E adding 6ghz might require something a touch different.
 

sfx2000

Part of the Furniture
Would it be crazy to replace a router's antennas with something much more basic looking?

Not recommended, as they are matched to the rest of the RF chain.

These are multiple band antennae, so while they look simple, there's actually a bit of RF engineering at work here.
 

noah way

Regular Contributor

josephclemente

Occasional Visitor
I'm going to give it a try. I ordered the antennas in white. They will arrive tomorrow; I might get a chance to test them this weekend.
 

josephclemente

Occasional Visitor
The antennas arrived at work. Since I have an RT-AX86U at work, I did an experiment with it. I tested two areas, one that was around -38 dBm, and another at -62 dBm. Then I changed the antennas to the smaller ones I ordered. I placed my phone in the same positions and gave it a few minutes. The dBm and link speed appeared to average the same. I was only paying attention to the 5GHz signal for this quick test.

Is dBm and link speed as reported by the Wifi Analyzer app (by Abdelrahmam M Sid) a "close enough" way to compare, or am I fooling myself and need to go further with iPerf testing? My fastest portable client device I have is my phone, a Note 10+.

Now to see what happens on the GT-AX6000....
 

itpp20

Senior Member
Maybe put it down in plain english, -50 is better signal than -70 (you can easily remember this when thinking about the value used for roaming cutoff which is usually set to -70)
 

josephclemente

Occasional Visitor
Great news! I replaced the ridiculous gigantic plastic antennas on my Asus GT-AX6000 with the basic small antennas mentioned above (but in white).

The most distant corner of my house was -65dBm (on average) for 5GHz. With my phone in the exact same position, I now see -62dBm. I wasn't expecting better results, but that is what I'm getting.
 

LilyRoss

New Around Here
Would it be crazy to replace a router's antennas with something much more basic looking?

I'd like to replace the massive antennas on my Asus GT-AX6000 (and maybe the RT-AX86U node) with something like this model:
https://www.amazon.com/dp/B082SH6QH6/?tag=snbforums-20

Looks exactly like the dual band antennas my motherboard came with. Length is 9.5cm to 10.5cm depending on the orientation.

I suspect the stock antennas are just excessive plastic. Or do routers have uniquely optimized antennas, and are not interchangeable?
the antennas play an important role in a router. i had my router in my living room and the range till my room was very less, as soon as i changed my antennas towards the room, the range got better
 

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