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Forum Discussion
NetGear bug: error msg 'This DFS channel is not allowed, the Radar was detected before' EX6150
I have the exact same problem & get the exact error about 'DFS channel not allowed & radar was detected before', that many other NetGear customers are reporting. It appears to be a bug.
I'm using the EX6150 AC1200 wifi extender & it's been installed & configured for a few months & was working without issues. Now about once a week, for no reason, the EX6150 drops the 5Ghz connection to my router (which is handling DHCP). When I try to reconnect the 5Ghz either manually or using the wizard, the EX6150 will not let me save my extisting wifi network info, and returns the error about DFS channel & radar being detected before. So I'm stuck. However, if I cycle power to the EX6150, it sometimes starts working normally again, yet other times it does not.
THIS APPEARS TO BE A NETGEAR BUG!
There were several posts that were perfectly relevant to my issue, but NetGear did not post a solution. Only told OP to check their inbox.
What is the problem? And what is the solution ?
I'm using the EX6150 AC1200 wifi extender & it's been installed & configured for a few months & was working without issues. Now about once a week, for no reason, the EX6150 drops the 5Ghz connection to my router (which is handling DHCP). When I try to reconnect the 5Ghz either manually or using the wizard, the EX6150 will not let me save my extisting wifi network info, and returns the error about DFS channel & radar being detected before. So I'm stuck. However, if I cycle power to the EX6150, it sometimes starts working normally again, yet other times it does not.
THIS APPEARS TO BE A NETGEAR BUG!
There were several posts that were perfectly relevant to my issue, but NetGear did not post a solution. Only told OP to check their inbox.
What is the problem? And what is the solution ?
4 Replies
You might want to read up on DFS (Dynamic Frequency Selection), which is designed to avoid interfering with any local weather and military radar installations. The set of Wi-Fi channels that must employ DFS varies based on where you live. Generally, however, Wi-Fi channels 36 - 48 and 149 - 165 are not subject to DFS, so try moving the channel on your main router into one of these ranges.
Thanks for your quick reply. Much appreciated.
1) There is nothing in any of my NetGear documentation or this website (search in Net Gear support didn't come up with anything), that talks about this error, which DFS channels subject to radar restrictions, or anything related. So by 'read up' on this issue, what content are you referring to? Something outside NetGear knowledge base?
2) I don't live anywhere near an airport or military facility. There are no radar sources around me or even close enough to interfere with or be interfered with by my home wifi network. In addition, I have several other wifi access points & router in my home network, and none of them have any issues, hiccups, or even a suggestion, of a radar interference or conflict issue. It's only the NetGear product,
EX6150 that has the issue intermtintently a couple-few times a month. So I highly doubt there is any kind of radar interference or conflict issue at hand. This appears to be more likely a NetGear product bug. There are multiple NetGear users having this issue, and while there is little to nothing on NetGear's website or in its documentation, there is significant reports of this problem on the Internet, though very little on solutions for it. In everything i have read so far, none have been legitimate radar issues, all have either been product bugs or seemingly product bugs.
3) if there are indeed DFS channels that are not subject to this radar restriction, and therefore would not cause this issue, it is a very good suggestion you've made to move to those channels. Hopefully, this will resolve the issue. I'll give it a try.
4) any ideas why power cycling the EX6150 seems to clear the problem for a few weeks?
Bottom line, I believe NetGear has a bug that needs attention to truly resolve this issue permanently.
Hi,
Completely agree.
I have an R8000 and did had, i think V1..32 installed.
I attempetd to change my 2G channnel but was stopped as the second 5G channel was listed as úsing a DFS channel.
But it ONLY has DFS channels to select from...
I rolled back to V1...26 and was able to update my 2G channel without any error message, even though 5G channel 2 was still showing use of a DFS channel.
IMHO 100% an errror in the latest firmware.
- And this DFS stuff is BS. I have no airports, military, or other sources near my home that would trip the DFS channel blocking function.
I followed the NetGear recommended solution to avoid the DFS channels, and still every couple few weeks the 6150 drops offline & has to be power reset to get it back online.
The DFS explaination & suggested work around are BS. This unit simply has bugs & is not stable over time. Even when completely avoiding DFS channels, the 6150 still has the same problem that NetGear attributed to the DFS scenario.
Not happy with this unit. I replaced a cheaper extender with the NetGear 6150 because it was supposed to be a better unit & NetGear supposedly being a reputable brand.
But was let down because the NetGear 6150 is just as unreliable as the cheaper Chinese off brand units.
Very disappointed with NetGear.
