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Mrs A is convinced that the router shouldn't be anywhere near the TV, likewise the cordless telephone. I am sure that they are all on different wavelengths and there shouldn't be any conflicts.

I am about to rearrange wiring and sockets in the living room and having router & phone on a shelf by the TV would be a far better arrangement than at present.

Would someone with more knowledge on the subject please confirm whether this would be OK.

I am not an electronics expert but I have a router, cordless phone and TV all together and I have never noticed any problems at all. If it is an issue for you can use the TP links which use the household wiring system to send data from one point in the house to another. I have one connecting my Sky box to the Ethernet connections linked to the router in another room and it is fine. See Dead link removed by Admin 26/01/2022

DWD

Routers are on 2.4 or 5 ghz
Cordless phones are 1.88 - 1.99 ghz
TV is in the mhz range

So, there should be no conflict what so ever. (If there were you would have noticed by now)

Thanks for that, should be enough to convince Mrs A!

There again maybe not ... My ISP suggested that I move the router 1 metre away from the phone base as I had too much noise on the line. See this too: https://www.ic.co.uk/support/knowledgeb ... -problems/

Someone-else is right, but Broadband frequencies cover radio frequencies( new G fast will approach VHF!) so in some cases RF interference can interfere with the broadband itself, before it gets to your router, so your SP has a point. Presumably the reverse is also true.
Openreach/BT SFI(special faults investigation) sometimes use portable radios to find sources of interference if they suspect that said interference may be affecting the customers broadband.