[MLB-WIRELESS] Fwd: Lord of the Rings style link to NASA Canberra
sjors at sprovoost.nl
Wed Jul 23 13:08:45 EST 2008
Thanks Mark, Rob and Emdeex(?),
So this little gadget would cost way more than $25.000 for a meager 11 Mbit
throughput? So that is 1.37 MB per second, 3.5 TB per month. My ADSL
provider charges me $50 for 25 GB (I know, not a fare comparison at all), so
they would charge $7000 a month for that connection. Except...
We still don't have Internet. What would NASA charge for that 11 Mbit?
Wouldn't really impress them; don't they have a 1 Gbit link to the outside
world or something?
We still have that maintenance issue. Which is huge, given that this is a
serial setup with a lot of parts that can break.
We have only connected myself (11 Mbit is still a bit slow in my standards;
I won't share that...). And I pay $30 dollars a month for twice that in The
Netherlands. Assuming the equipment lasts for 5 years (or at least the link
becomes irrelevant because Australia might, , I hope, be bathing in cheap
broadband by that time and Moore's law will make 11 Mbit sound pathetic), I
would be looking at a bill of $400 dollars a month, plus actual internet,
This would also totally not scale, because as I understood it there is only
about 10 frequencies available and you would need separate antenna's for
each of them (correct?). After that, you have to take different routes. So
in the end you would connect 10 Melbourians (perhaps a few more if they are
willing to put up with a slow connection for half a decade) for half a
milliion dollars and get yourself into an infrastructural disaster.
Digging and laying out optic fibre cables sounds a whole lot more attractive
all of a sudden. Actually, even Telstra's iPhone deals sound better than
On Wed, Jul 23, 2008 at 10:06 AM, emdeex <emdeex at gmail.com> wrote:
> Here's a google docs spreadsheet, anyone can edit:
> I know your not considering this to be a "carrier grade" link, so I
> wouldn't budget for downtime and tech support. Its a hobby project
> wrought large right?
> On Wed, Jul 23, 2008 at 6:34 AM, Rob B <rbritt at gmail.com> wrote:
> > Just to kick the cat around,
> > Hardware would consume more monies in setup and maintenance than is
> > practical in my belief. But to proceed any way each node in chain to get
> > thruput would require two radios with distance setting (cos over 3k)
> > in bulk for your 134 +spares say round that out to 150 @ $100 then
> > say 2 15 db panel to maintain high rates at best 11mb/s over distance 150
> > $100 (guess). Mounting hardware even cheap @ $50 min given structure to
> > it off. Now where are we up to 1500 + 1000 + 500 = $3000
> > Then if this is to have any chance maintaining a level of service say max
> > downtime of 4 hrs tech time is $exxxxxy, cos I would not get outta bed
> > cheap on a cold wet night with this many nodes even at 99% uptime each
> > max 1 hr downtime, say probs every 2wks for 1 hr with no backup that
> > be 67 hrs down time per week OUCH etc. I'm getting tied of this. Some one
> > draw up a spread sheet and we could develop and do what if with our
> > prices good at time of quoting and will be honoured until I next wake up,
> > good nite, um good morning.
> > hope that helps George (cos I'm not Dutch)
> > Regards from the BBQ Co-Ord
> > PS should I do a spread sheet for the price of sausages?
> > On Tue, Jul 22, 2008 at 9:56 PM, Sjors Provoost <sjors at sprovoost.nl>
> >> ---------- Forwarded message ----------
> >> From: Mark Aitken <nodegxt at yahoo.com.au>
> >> Sjors Provoost wrote:
> >>> Distance between Melbourne and Canberra, via M31: 672 km
> >>> Average distance between nodes: 10 km (more?)
> >>> Number of nodes: 67
> >> if all done with 802.11 gear I doubt there would be much through put
> >> one end to the other. This is why
> >> telco's have multi gigabit optic fibre between nodes.
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