BT wifi intereference

Do you have adequate security on your wireless network?

Mavericks won't change anything if other people can get onto your wireless network. You need to use good security (WPA2) and you need a strong password on your wireless network.

Are you connecting to your Sky WiFi or to the BT WiFi? I ask because the Mac will connect to an open WiFi and you may not realise it.

Also as William says, check the Sky router is set up with WPA2 encryption, change the default password for both the Amin account on the router and the WiFi password (the one Sky put on a label on the router)

If you get connection problems, confirm the channels in use by other WIFi routers that are nearby and try and select one for the Sky router that minimises contention, although you will not clear contention completely for free channels.

If you find yourself connecting to the BT WiFi instead of the Sky one, I think you can set up the Mac to ignore the unwanted WiFi signal.

Also should have mentioned that you can contact Sky to help set up the Sky router securely.

Hi,

This is what I can see from my Wifi enabled iMac regarding our street

As you can see the BT FON item offers a Wifi Access point that is not using a secure connection.

Normally if you are with BT they give the option to access the network though Hotspots and this is one of them.

It is most likely part of the set up of the BT Hub above it in the list.

My Sky device has had the Admin (Browser login) password changed.

See also http://www.bbc.co.uk/news/technology-26352439

iStumbler can see more and tells you the Channel the devices are using so you can change yours to avoid that sort of interferrence

9:42 pm Sunday; March 2, 2014