[LINK] Senator Coonan on 7:30 Report

[Marghanita da Cruz]

Roger Clarke wrote:
> At 7:43 +1000 19/6/07, Richard Chirgwin wrote:
>> I have one small experience. When at the ATUG regional conference in 
>> Canberra last month, the exhibition room was connected by YLess4U to a 
>> base station 19km away. I think it was using a 5.8GHz connection.
>> The service worked just fine. As you say, George, it doesn't go 
>> through hills, so the transceiver was mounted on a 5m pole. That 
>> isn't, however, that much of a hardship.
> 
> That surprises me, because Canberra's hills mean that a 19km line of 
> sight is challenging (assuming a single transmitter rather than 
> repeaters or multiple cells with some kind of cotention-avoidance).

Most remote/rural communities wouldn't have the footprint of Canberra - 
given the design of Canberra, I would guess that additional transmitters 
to provide coverage would be economically justified. It would be 
interesting to see what is provided in the bushfire ravaged areas - 
where the cable melted.

> 
> (It also surprises me that you didn't arrange a beer with us locals 
> Richard!  Mind you, I wasn't in town during May ...).
> 
> The only image I could quickly find is here:
> http://www.abc.net.au/science/news/stories/s310182.htm
> 
> I couldn't quite make these do what I wanted:
> http://www.gim.act.gov.au/actLocate/index.dwt
> http://www.actmapi.act.gov.au/framesetup.asp
> 
> Where was the conference held?  And do you have any idea where the 
> transmitter was?  (Although maybe we can guess that from the location of 
> a conference and a map ...).
> 
> Ah, the National Museum:  http://www.atug.com.au/all_cal_events.cfm
> 
> The southern end of Tuggeranong??  (But Calwell and Mt Tennant don't 
> have inter-visibility north of the Mt Taylor ridge-line).
> 
> Or the northern rim of Belconnen?  That wouldn't even serve most of 
> Woden or Weston Creek.
> 
> So maybe 19km from the Museum means the Brindabellas - which could be a 
> smart choice, because it would get around many of the big hills. Bad 
> luck for the 20% of Canberra that would still be in the shadows though.
> 
> 


-- 
Marghanita da Cruz
http://www.ramin.com.au
Phone: 0414 869202