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Forum Discussion
Nighthawk R7800, no 80 Mhz Bandwidth
Hi Everyone,
A number of years ago I purchased a Netgear Nighthawk R7800 router and set it up as another access point along with my Arris NVG443B modem/router supplied by Frontier Communications DSL. I wanted 4 access points, two 2.4 Ghz band and two 5 Ghz band.
The system has operated well but with one exception. While the Arris NVG443B broadcasts at 80 Mhz bandwidth (5 Ghz band) the Netgear only broadcasts at 20 Mhz bandwidth (5 Ghz band). This has happened since day one and I never thought of it as an issue until I discovered, after warranty had expired, that the Netgear R7800 was supposed to broadcast at 80 Mhz also.
I tried everything I could to "fix" the problem, making sure my settings were correct and trying different channel settings but nothing works. As an aside, I installed a range extender for a different reason and the range extender broadcasts at 80Mhz for both the Arris and Netgear routers (5 Ghz band).
Can someone help? Do I have a bad Netgear router?
Settings: Region - North America, Channel - now 52 (tried others), Mode - up to 1,733 Mbps, Firmware - up to date. Reset - multiple times (not factory reset)
All the other 5 Ghz routers around me broadcast at 80 Mhz per my WiFi analyzer app.
15 Replies
If you left the wifi radios running on both the R7800 and the Arris DSL modem, then this would be interference between the two and probably causing the R7800 to reduce the bandwidth to 20Mhz to try and avoid interferences and help maintain wifi connections. This is NOT recommended having two signal sources. If you had turned OFF the Arris radios and extender, the R7800 would and should be broadcasting 80Mhz. 160Mhz if you enabled it.
Thank you for your quick reply. Unfortunately I am not sure it is an interference issue. I disabled the Arris 5 Ghz transmitter, rebooted both routers and waited 20 minutes. The Arris router was not transmitting (at 5 Ghz) and the Netgear 5 Ghz transmitter still had 20 Mhz bandwidth. I even disabled the range extender.
I reconfigured the Arris router and everything is back to "normal". Arris 5 Ghz at 80 Mhz and Netgear 5 Ghz at 20 Mhz.
I am open to more suggestions but have a feeling the Netgear router has an issue.
psuhacker wrote:
I disabled the Arris 5 Ghz transmitter, rebooted both routers and waited 20 minutes.
That does not disable the router function on the Arris.
Just another user with time on their hands.
