<div dir="ltr">On Fri, Jun 28, 2013 at 10:58 AM, Russell Coker <span dir="ltr"><<a href="mailto:russell@coker.com.au" target="_blank">russell@coker.com.au</a>></span> wrote:<div><br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="im"><span style="font-size:13px;font-family:arial,sans-serif">On Fri, 28 Jun 2013, Bret Busby <</span><a href="mailto:bret@busby.net" style="font-size:13px;font-family:arial,sans-serif">bret@busby.net</a><span style="font-size:13px;font-family:arial,sans-serif">> wrote:</span></div>
</blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="im"><br></div><div class="im">
> In the meantime, using a (rough, and, not very accurate) figure of a<br>
> population of about 20 million, then, the listed cost cited above, of<br>
> $37400000000, gives about (3.7x10E10 / 2x10E7) $1800 per person.<br>
<br>
</div>37400000000/7600000 == 4921 which is pretty close to the 5000 number that has<br>
always been used for the cost per household.<br>
<br>
This isn't economically viable and there's no realistic possibility of the NBN<br>
being privatised in any sort of profitable manner which doesn't involve writing<br>
down the value to something significantly less than $37.4 billion.<br></blockquote><div><br></div><div style>It's also worth pointing that the build cost is being spread over ten years, and the actual lifespan of the network is often stated as 50 to 100 years.</div>
<div style><br></div><div style>Given 50 years - $98 per household per year. Even if costs double, an absolute bargain for the resulting infrastructure.</div><div style><br></div><div style>The NBNCo's business plan also states that the company will be debt free by about 2030, at which point the company will be returning $2-3 billion a year directly into the Government budget.</div>
<div style><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="im">> I understood that data transmission via electricity supply lines, is<br>
> faster and less expensive, as the network of lines already exists. I<br>
> believe that data transmission via electricity supply lines, has been<br>
> used successfully in Europe, for some years, now (of course, we are way<br>
> behind the rest of the world - that is the policy of the federal<br>
> parliament).<br>
<br>
</div><a href="https://en.wikipedia.org/wiki/Power_line_communication" target="_blank">https://en.wikipedia.org/wiki/Power_line_communication</a><br>
<br>
Wikipedia suggests that data rates only go up to hundreds of kilobits per<br>
second, that signals don't go through transformers, and that even power<br>
companies are using optic fiber for their own data transfer needs.<br></blockquote><div><br></div><div style>Aurora Energy (Tasmanian government owned energy distribution/retail company) did trials of both FTTH and BPL (broadband over powerlines) about ten years ago now; it was the outcomes of these trials that prompted the Tasmanian Government to submit a proposal of a statewide FTTH network to the Federal Government in 2007/08; and it was this proposal which resulted in the Federal Government deciding to build a National FTTH network in 2009. So in a very indirect manner, this option was eliminated very early in the process of the NBN!</div>
<div style><br></div><div style>Regards,</div><div style><br></div><div style>Charles</div><div><br></div></div></div></div></div>