And thanks for all the replies.
I was thinking about changing the wifi channels to 1 or 6, but am unsure if you can do that on an individual basis!
Would the router only do that on a 'global’ basis... i.e. would all devices have to move to the new channels, or could I just set powerbook g4/morphos laptop to the new channel(s)???
Wifi adapters on computers don't care about the channels. They just connect and autoconfigure. It's a purely router/access point setting.
The only exception is if you use channel 13, which I used to (because it's usually really clear), and adapters with North American drivers just can't see the SSID. Seriously - it isn't a legal channel over there.
Channel 6 is the most crowded channel of all 2.4GHz, so I'd avoid that if you could - many people squat on that one without even bothering to check others, and worse still they use dual band 2.4GHz to get more bandwidth, which crowds out the nearby channels as well.
In city blocks, 1 or 12 are usually the least crowded. Use Wifi Analyzer on Android or Windows to see what people are using nearby and avoid clashing with other strong signals. Better still, if your router has an Auto channel setting, use it.[ Edited by KennyR 26.01.2019 - 19:22 ]