There's only 83.5 MHz to work with at 2.4 GHz, while in most countries you have at least two hundred MHz in the 5 GHz range (http://en.wikipedia.org/wiki/U-NII). So if you choose to have 40 MHz channels for increased throughput, you can have many more (non-overlapping ones) at 5 GHz than 2.4 GHz, increasing Mbps/area.
Frank -----Original Message----- From: Owen DeLong [mailto:o...@delong.com] Sent: Monday, February 25, 2013 10:34 AM To: Frank Bulk Cc: NANOG Subject: Re: 10 Mbit/s problem in your network Correct. However, while A is 5Ghz (only), it's not significantly better than G. The true performance gains come from 5Ghz and N together. N on 2.4Ghz has limited benefit over G. N on 5Ghz is significantly better. Owen On Feb 24, 2013, at 8:56 PM, "Frank Bulk" <frnk...@iname.com> wrote: > The IEEE 802.11n standards do not require 5 GHz support. It's typical, but > not necessary. > > Frank > > -----Original Message----- > From: Owen DeLong [mailto:o...@delong.com] > Sent: Sunday, February 17, 2013 2:07 PM > To: Jay Ashworth > Cc: NANOG > Subject: Re: 10 Mbit/s problem in your network > > > On Feb 17, 2013, at 08:33 , Jay Ashworth <j...@baylink.com> wrote: > >> ----- Original Message ----- >>> From: "Scott Howard" <sc...@doc.net.au> >> >>>> A VPN or SSH session (which is what most hotel guests traveling for >>>> work will do) won't cache at all well, so this is a very bad idea. >>>> Might improve some things, but not the really important ones. >>> >>> The chances of the average hotel wifi user even knowing what SSH means >>> is close to zero. >> >> {{citation-needed}} >> >>> As an aside, I was sitting in JFK airport (terminal 4) a few days ago and >>> having a shocking time getting a good internet connection - even from my >>> own Mifi. I fired up inSSIDer, and within a few seconds it had detected >>> 122 AP's... >> >> Yup; B/G/N congestion is a real problem. Nice that the latest generation >> of both mifi's and cellphones all seem to do A as well, in addition to >> current-gen business laptops (my x61 is almost 5 years old, and speaks A). >> > > I think by A you actually mean 5Ghz N. A doesn't do much better than G, > though > you still have the advantage of wider channels and less frequency congestion > with other uses. > > Owen > > > >