This is Why My 5 GHz WiFi Was Garbage [DFS] !!! 

**Correction** 2.4 GHz Non-overlapping channels are 1, 6, 11, in the video (by mistake) it is written 1,6,7! Sorry for that!

Showing these obscure networking terms in a simple way. Nice work! Learning lots with your videos!

Thanks for making this video, helpful for others. Wish found this information months ago since I had been having issues with wireless clients disconnecting because of DFS channels and couldn't figure out why, till two months after. Had searched around and found this information.

OMG!!! You're the hero! I've dug through the whole internet and I've been fighting the same issue for years! I live about 8-9 km straight from an airport, which might be far enough, however... I'm RIGHT in a damn axis of the main runway. I've been using higher channels on 5GHz due to some extra power it gives to boost the signal and it was fine, except sometimes it was going off just like that. Sometimes it came back and sometimes stayed off, untill I switched it manually. Now, since the airport is quite distant and shouldn't be interfering, then what might be causing it? After watching your video I came to an idea and did some testing. The result seemed both: odd and obvious at the same time: it is those damn planes that sometimes go quite low above me (since I'm in the runway axis) that cause my 5GHz wifi drop randomly... O!M!F!G! Thx again.

I haven't tried this but it makes sense and fits my current problem. Many thanks for bringing this up.

Thank you so much!!! Always learning new things from you!

Dude, I love your videos. Thank you for taking the time to make them. I learned something new today. 👏🙌😃

Thank you! I am learning a lot with your videos. I am glad i got the same router as you. I am a tech support myself. Great work i am now a subscriber

I am working on getting A+ certified and one of the things I have to learn is this. Very well explained. Thank you.

You my friend are Very Good at delivering your content. Candid and easy to understand. Thank you and keep creating more contents.

Thank you for this great video. I live next to an airport and have those issues from time to time. Gotta get into this problem....

went down this rabbit hole a few days ago, wish i found your video then:(

Very useful to me gaining me ideas on future use... Thanks...

I had a working aimesh network comprised of an Asus RT-AC68U and a TM-AC1900. I flashed the TM-AC1900 with Asus firmware and created the aimesh network quickly and easily. Subsequent firmware upgrades from Asus rendered the aimesh network inoperable. Do you know if Asus started cracking down on hacked Cellspot routers? Do I have any other options to get it working again? Thanks and you're doing a great job with your tutorial videos.

Great video, I live in an apartment and DFS is a life saver. I hope there is no RADAR around me (Cross fingers)

WiFi Analyzer Tools or a good Spectrum Analyzer helps to spot things like this. Good Job on the explanation.

Called it! The Merlin firmware updates are a godsend. It also solved a pesky disconnect problem with the USB port when streaming video from an attached HDD.

It's a good thing that not many people are aware of the unofficial firmwares one can flash on these routers to bypass F©©'s frequency lock, at the end of the day it's just causing inconvenience to us users.

Now I know why my Asus router has those missing 5ghz channels. Awesome!

Installing Marilyn onto Asus I like to seek your assistance in providing me the step onto the installation. Especially downloading the Marilyn software and then follow the instruction for installation.

thank you, i found out there is one of the question in new CCNP exam

This video is GOAT I have the same problem and live down the street from an airport

Just what I was lock it for. Thanks a lot, HAG1!

I wish my router logged in the detail to say that it detected a DFS eventbut I am close to an airport so this is great to know. Also I was considering using DDWRT firmware on my R7000

You surely helped me quite a lot. THANK YOU. I just subscribed BTW.

Thank you. This is very useful information.

I have a question. All my neighbours 5ghz channels are auto so they switch always so I don’t care about them. My question is. Do the lower 5ghz channels 36 and them. Have any differences to channels that are higher (like 149 and those ) btw I’m in Europe

How long can your DVR record on 1tb before you have to start deleting footage

I like all your videos especially the way of presentation

Nice video. That was what was happening to me. Regular disconnections because I was using channel 64. I changed to channel 36 and problem got fixed 😎

I got a question but it’s about DD-WRT and the 5GHz. Is it possible to have both virtual access points for the 2.4 and the 5 running at the same time, an$ if so how do you set it up

hey man. amazing videos! im having an issue though i was hoping you could assist. my house is in Malaysia. and im living nearby an airport. im facing the exact problem whereby the 5Ghz band of my AC86U would constantly drop after awhile, and my only solution was to reboot both the main router and the node (i have two AC86U connected via Aimesh using Ethernet). I was so excited watching your video thinking the DFS issue is what's plaguing my router, then u mentioned that ASUS router excluded DFS channels altogether (true enough, i checked my channel and there's no DFS channel). Do u have any other idea what else could be the problem?

Great video my good man.

the presentation is lit 🔥

How to access the channels page on the Asus router? And activate it

Excellent video

I actually have to use UMII-1 5ghz bands as my roku streaming stick can onky see 5ghz wifi on those channels

Hi, wifi6 frequencies are also affected by this DFS problem?

Interesting. I too had a 5 Ghz disconnect problem between my RT-AC68Us. I did solve the problem, but it had nothing to do with DFS channels. Turns out this problem is well known in the world of Asus RT-AC68Us. The problem is with the Asus implementation of Bridge mode (at least for firmware 3.0.0.4.384_20648). The workaround is simply to use Repeater mode instead. Same wireless parameters, but Repeater mode is rock solid. With Bridge mode I could have 5+ dropped connections per day. I have not had a disconnect since running with Repeater mode. Asus might have fixed this in later firmware since a lot of folks brought this to their attention.

@5:43 what did "disonnected" mean? 😅

I took me alot of research to find out why, and stil lso few video information about it.. I am happy to see I was not crazy !! my channel 36 of the 5ghz in my canadian city(sector of Montreal) does not work!

Is 5 g In the United States same as out side USA. ?

Please make a video about how to install best custom firmware on tplink re200 and archer c6 ..

But what if there is no airport and no radar and 5Ghz is still disapparing a lot?

you are a great teacher!

Made my net+ course thing waaaaaaay easier to understand. And unironically might be the answer to my internet problems as well.

Bought a 5Ghz extender. I was in belief that after years, protocol would be perfect, SoCs would be perfect. 2 days passed, everything looking good. 3rd day some random signal strength drop with some disconnect... I went through whole home to find out neighbor's brand new devices near mine (apartment flats, same wall outlets along Y axis). I turned off auto to choose channels and got this warning screen about DFS. Moreover my old Sony Z3C was only able to see the first few 5Ghz channels. So I am stuck to first 4 5Ghz channels. Same frequency range with my neighbor. Whole ac protocol feels like a rushed job for me right now. Even after seeing AX released, there appeared an E. Wish AX stuff were affordable in economically questionable countries. Q.Q

How do I edit out the DFS channels from Auto Select on an Asus A86U?

avarin, fekr konam dige niazi nabashe firmware ro update konam, now I realize that when an Ahmagh airplan az balasaremon rad mishe simultaneously my modem 2 daghighe WiFi nemide BEHAM KHELI RABT DARN.

DFS can valuable in the right crowded area. I live in a valley so DFS channels are good to go and help out at my crowded condo.

I have the exact same problem. It keeps disconnecting from time to time, making RU-vid hangs or Plex completely stop working. I just set channel to Automatic without DFS and I hope it works. The problem is a while ago I changed channel to 36 and it kept disconnecting, so I don't know if this gonna work now.... but let's have hope. Thanks.

Thanks for the knowledge drop

Having the same problem )) maybe this video can help

Just get my new asus router and 5Ghz wifi keeps disconnecting, my home is not even near the airport, forced the channel to 48 and now everything works perfectly.

Bravo!!!!

is that tomato firmware on 7:00?

Great news with the new Merlin firmware.

THANK YOU CANT SAY IT ENOUGH!!!!!!!!!!!!!!!!!

Thx. Bro

AP under Asus firmware sucks, I had no luck getting my clients to cooperate but AImesh under Merlin is working great!

What people tend to forget, because it's usually stated as he states it here, "to avoid interference with my neighbor's WiFi..."; well, if you're interfering with your neighbor then your neighbor is also interfering with you. So, even if you don't care about your neighbor, the problem affects you too. In the USA, the non overlapping 2.4 GHz channels are 1, 6, & 11 at a 20 MHz bandwidth. If you're in a crowded area, don't use the 40 MHz bandwidth on the 2.4 GHz band. If you do, you'll probably be overlapping someone and, as stated above, if you're interfering with them, then they are also interfering with you. So, you'll probably get better performance at 20 MHz due to the reduced interference. Also, while a clear channel is best, having 2 access points on the same channel actually causes less interference than having them on overlapping channels. Some newer devices are smart enough to realize this if you use the Auto channel selection; however, most aren't. So, do a scan of your area and pick channel 1, 6, or 11 for your 2.4 GHz band, whichever is the clearest. As in the 2.4 GHz band, in the 5 GHz band, the wider the channel width, the more likely you'll walk on another device. So again, in a crowded area, don't run wider than 40 MHz. Once again, the reduced channel width's reduction in performance will probably be less than the performance reduction caused by the interference you get with the wider channel width. Some devices, such as Mimosa radios, will lock out the DFS channels that it detects RADAR on so that it doesn't try to return to those channels, but will continue to use the other DFS channels.

I live near one of the worlds 🌍 biggest airport, no wonder my 5ghz WiFi is SH’T

I have a public airport about 8 miles away and a private airport about 1 mile away.

thnx a lot genius!!!