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Forum Discussion
JohnUU
Aug 17, 2019Tutor
Upper Wi-fi Channels incorrectly using lower channels.
I'm finding there is an issue with the chosen higher wi-fi channels in European 2.4GHz band. Due to neighbours 'broadcasts' I opted to set my preferred Channel to 13, and rebooted the router. I wa...
- Aug 18, 2019
Schumaku - Congratulations! I believe you have found the solution!
Deselecting that '20/40MHz Co-existence' checkbox has returned the information - Channel 13(P)+9(S) and the router is now correctly using Channel 13.
Many, many thanks.
IrvSp
Aug 18, 2019Master
We have 2 things to consider here.
First, on the wirless page is a REGION. What is that set for? Depending where the modem/router (D6400) was bought that could limit you. Look at the manual (http://www.downloads.netgear.com/files/GDC/D6400/D6400_UM_EN.pdf) starting on page 94. Look at page 95 as well, has this, "In some regions, not all channels are available."?
Secondly, this is a MODEM as well. In the US at least, and possibly everywhere, the firmware is under the control of the ISP. You can't change the f/w. Changes you can make may be limited as well. Have you contacted your ISP?
- antinodeAug 18, 2019Guru
> Secondly, this is a MODEM as well. In the US at least, and possibly
> everywhere, the firmware is under the control of the ISP. You can't
> change the f/w. [...]Not really. The firmware of a device which is (or includes) a DOCSIS
cable-TV-type modem is controlled by the ISP. A D6400 is a DSL
nodem+router, not a DOCSIS cable-TV-type modem+router.> [...] Look at the manual [...]
Take your own advice? Look for "Update the Firmware of the Modem
Router". (Yow.)- IrvSpAug 18, 2019Master
antinode wrote:> [...] Look at the manual [...]
Take your own advice? Look for "Update the Firmware of the Modem
Router". (Yow.)I do not appreciate your snotty condescending attitude and replies. Apparently from other threads, so do others feel the same. If you can't politely reply and correct errors or omissions, keep your opinion's to yourself please.
- schumakuAug 18, 2019Guru - Experienced User
Wild guess:
- Your router is configured to use 40 MHz or 20/40 MHz bandwidth on, so to make this happen it does combine the channels 9 and 13 when configured to 13.
- This "distance" is required because the channels on 2.4 GHz are only 5 MHz wide, using +/- 2.5 MHz from the nominal number, and are overlapping therefore.
- Information in the Web UI might be incomplete - newer Netgear routers show this in more details.
- The "primary" channel default to the lower channel, while the "secondary* is the higher one.
- JohnUUAug 18, 2019Tutor
Thanks, but yes the router is correctly set for Europe/UK, where technically we have 13 channels available, on the 2.4GHz band.
[It's in North America that there are just 11 channels available, and this router was bought here in the UK as a UK model.]
Yes, the device is useable as either a full-blown router or as a modem only (again software selectable in the devices firmware) - and it's configured as a router in this c ase.
BT - our national infrastructure provider, as well as my ISP in this case - don't make any configuration alterations to routers: they simply determine the Sync rate that the router sees over the connection, and use Dynamic Line Management (DLM) to determine the maximum service available with the minimum errors. In this instance I'm happily getting 50Mb/s -10Mb/s with zero errors being recorded by the router!!