Hi @GraemeMcD
You have a Huawei router & that is a bit of the problem, inasmuch as it is old. If you have the current Sagemcom router (aka WiFi Hub 3), then you can turn it into a WiFi 6 mesh network with a Sagemcom WiFi Booster (FAST266), which is very good. It can connect back to the WiFi Hub 3 over WiFi or Ethernet. This being a mesh network, it will manage the interference, although you might be better off in your case, as you suggested, connecting them together via an Ethernet cable. However, to get this router for free, you would have to take out a new contract or at least be in the last four months of your existing one. The booster, if still on offer, is £30.
I have tested this scenario extensively & can provide any required technical support on it.
Your best bet here (if you are interested) is to contact the Better Value Team (old Legacy Dept), please call: 0345 1725157. Opening hours:- Monday to Friday 09:00 to 19:00 Saturday 09:00 to 18:00 Sunday Closed
If you don't want that, you could look at something like this:-
TP-Link TL-WPA7617 KIT AV1000 Powerline Adapter WiFi Extender, WiFi 1200Mbps, Ethernet Ports, Powerline WiFi Extender, Powerline Network Adapters, Plug & Play, 4K video streaming & Online Gaming : Amazon.co.uk: Computers & AccessoriesTP-Link TL-WPA7617 KIT AV1000 Powerline Adapter WiFi Extender, WiFi 1200Mbps, Ethernet Ports, Powerline WiFi Extender, Powerline Network Adapters, Plug & Play, 4K video streaming & Online Gaming : Amazon.co.uk: Computers & Accessories
Please note: this is a bit old itself, as it only supports WiFi 5 and is more expensive than the Sagemcom mesh solution, based on getting a WiFi hub for free with a renewed contract & buying the Sagemcom booster. I have never tested this TP-Link product, so I don't know what it is like. It will require both units to be connected to the same electrical ring circuit, as it uses power line technology to connect them.
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