|Looks like your worst case scenario...|
Barring running a length of cat-5/6 all the way, or at least from a homeplug adapter in a socket before the GFCI (aka an RCD in the UK), you might be able to get a wifi extender to work; be it a specific wifi extender (which connects to main router via wifi) or an additional router that is connected (via wifi) to the main router - which is installed wherever (ideally as close to the isp input to your home)...
I'm not sure about this statement in your initial post though:
In theory I should be getting 500 mbps, in practice, I'm getting 14 mbps.
My method of testing:
You appear to say you are expecting 500Mbps and getting only 50Mbps - straight out of the router at source as it were - i.e. with router connected to your isp/dsl service as close to where it comes in as possible (ideally of course at the actual point itself)? Or am I misreading here? Or is the 500Mpbs a typo and you actually meant 50Mbps not 500Mbps? Confusion still continues here a little (for me at least) with your next statement:
- I have a broadband 50 internet connection that gives me 50 mbps speed off the modem/router. Connecting directly to the router confirms that I'm getting around 48 mbps from speedtest.net.
If you have a 50Mbps service from your isp that's the max you can hope for; and likely a wee bit less (e.g 48 instead of 50Mbps) - again due to actual signal path into your property and also within in it.
That slight drop in Mbps 50 down to 48Mbps) is within a a reasonable margin of error; insertion losses etc. might allow that; or quality of connections. In the UK many pay for an allegedly say 50Mbps service and are lucky if they get a third of that... (if over copper not fibre). Cable companies (Virgin in the UK for one, and BT if they bring fibre into your home) will bring most of that 50Mbps (in my example).
The specs. for the TP-link adapters (as in your "link") allow a max of 500Mbps - and all you can get (discounting the isp 50Mbps/500Mpbs service confusion) is a max of 14-18Mbps - after the GFCI - regardless of source of the signal? You appear to have discovered why that is so...; or have you... (see my comments re' UK and the Devolo system below)?
The TPlink kit will handle a maximum of 500Mbps - and hopefully deliver it (or most of it) if it's fed into it... - barring the GFCI issue... But obviously if you feed a 50Mbps signal (e.g. your isp/dsl) into that's the maximum you can expect to get out of it for that particular signal source... In short you get out what you put in (well - umm - almost); and can't (expect to) get a quart out of a pint bottle - as they used to say in the days of Imperial Measures in the UK (before the EEC imposed its will on the "free" world...).
Have to admit I'm a little puzzled as to why part of the house is on GFCI and the rest not so... I can see some/most of the kitchen; and likely the garage/workshop and outdoor outlets...; but why some parts of the rest of house and not all; why the split between floors?
My experience with USA wiring is that these days it's all or none - depending on age of property and when last (re)wired? Which is why of course there are GFCI/RCD adapter plugs for use with outdoor devices (lawn mowers not the least - from Home Depot etc.); and also external (weather proof/protected) socket/outlets too with an integral GFCI/RCD (in USA/Canada - and the UK) - should the house itself not be on a GFCI/RCD - or at least any external/outdoor outlets are not so.
(Allowing that in the UK the wiring system is a "little" different...) I have a house that has some power ccts. on the UK equivalent of an GFCI (an RCD - Residual Current Device) and some that aren't. The fridge/freezer and central heating, and one power cct. into what used to be an office are not on an RCD. But the main power ccts. (three in all) are on an RCD. Fridge/freezer at least cannot be left without power due to a mis-fire/mis-trip(?) of the GFCI/RCD - and they do happen... If that device (for now good reason) trips the cct. to the fridge/freezer, the fridge/freezer will only hold its "coldness" for a finite time; and more than a few pholks have returned from a holiday to find they have pool of water and rotting food etc.due a n RCD (GFCI) tripping for no good reason... I speak from recent experience on this when I returned to my late Mother's home and found just that... To be fair the RCD (the whole house is on one...) had tripped as an electric kettle had decided to fail - even though not in use... The kettle had been left plugged in but not actually in use - although the power socket switch was in the "on" position). The element had rotted through and so an earth (ground in USA/Canada) leak was detected between earth/ground and neutral and the RCD did its job... Said kettle was replaced of course and its replacement is not left plugged in nor the socket actually "on" when no-one "at home"...
Regardless of which power cct. my homeplugs are using (RCD or not) they work fine...; between all three GFCI/RCD ccts. and the one non-GFCI/RCD cct.; and there is no loss of signal between them. I use Devolo homeplugs which are not available in the US/Canada as best I ascertain... Possible their electronics are different to those of say TP-link?
message edited by trvlr