158 years of New Zealand's electoral history - condensed to a gif, for @TheWirelessNZ http://t.co/MbkL6N3R5r http://t.co/1RNCcy9Uky
Read the rest of Blake-Kelly's story over on The Wireless.
Wi-Fi woes remedied
Having bought and tried out new and very fast 802.11ac Wi-Fi routers, it's been bothering me that I've never reached the dizzying speeds they promise to deliver.
The fastest I've seen is around 600 to 867 megabits per second, which is pretty amazing, but still a far cry from the faster-than-gigabit Ethernet speeds of 1,300 Mbps that the two routers I have are supposed to connect at, and which the Macs can handle too.
To get the really fast speeds, you need to use the 5 GHz frequency band. This has much more bandwidth than ye olde 2.4 GHz spectrum, and due to less use and shorter reach, much less interference.
With 40 and 80 MHz wide channels, 5 GHz Wi-Fi should in theory be very quick indeed, yet for me it wasn't all that.
Finding out why I couldn't connect at the fast fast fast speeds even close to the router turned out to be really quite a propeller head exercise.
The first hint was the country code displayed by the Macs in the house - DE for Germany.
This is wrong, but there's no setting in OS X to change it to that of the routers (I use Australia on them, sorry.)
I didn't think it would matter much until I realised that the wrong country code limits the amount of channels in both 2.4 and 5 GHz, and also it would seem, the output power of the Wi-Fi adapters.
With the DE country code, the Macs couldn't connect to any 5 GHz channels above 48. This was problematic with two routers as there wasn't room for 80 MHz bands on both, and I wanted the high channels above 100 for that.
The problem here is that Macs pick the country they think they're in through 802.11d beacons, or short signals. Not all Wi-Fi routers send those signals and Macs aren't picky which beacons they select, so my systems probably decided one of the neighbours' routers should decide that we're in Germany.
There's no way to turn fix this easily, or even turn off 802.11d on Macs that I can find.
Instead, I ended up binary patching the Wi-Fi drivers for OS X with trepidation as it's very low-level tinkering with a whole heap of things that could go wrong. Yes I backed up, and no, you shouldn't try this unless you really know what you're doing.
But, it worked. Here's what I see now:
That's warp speed Wi-Fi right there, Captain.
Should it really be this difficult though to fix a relatively simple thing like the Wi-Fi country code (answer: no!)?
Am going to follow this one up with vendors for a more detailed explanation and I hope, an easier way to fix the problem.
