On 02/03/2017 20:12, DerbyBorn wrote:

Daughter is trying to use WiFi instead of a wire travelling up the stairs.
Sky WiFi hub thing is downstairs - a PC used for work is upstairs - a wall
and solid floor get in the way.

What sort of speed does she get with the basic Wifi? The only time I
have ever had problems vertically in a house was in Belgium where the
house had 12" thick concrete floors with embedded 4" reinforced steel
grid and a bunker underneath to withstand a nuclear blast!

Wooden floors and plasterboard don't attenuate Wifi by very much.
(unless they are foil backed when all bets are off)

Even then strategic placement of a junior hacksaw near the Wifi antenna
would make it work. Worth a try using one of the high gain Wifi dongles
that Morgan computers sell if a basic Wifi isn't working for you.

I use one of those with a high gain antenna from 500m away in clear air.

What should she consider - and Extender that appears to boost the signal or
a system that uses two 13amp plug in things to use the house wiring?

If you want a higher speed fixed wiring then ethernet over mains is
probably the least hassle but you may be able to get Wifi to work.

--
Regards,
Martin Brown