[AusNOG] Eureka Tower 24ghz

Sat Apr 6 19:04:45 EST 2013

Actually yeah, you could be right.. The language in section 3 seems to 
suggest that the only recourse for intereference is to retune your LIPD.

'as well, a device will not be afforded protection from interference 
caused by other radiocommunications services (see paragraph 4 (1) (b) 
and Note 1 after section 4 of this Class Licence).
Should interference occur, the onus is on the user of a LIPD to take 
measures to resolve that interference, for example, by re‑tuning or 
ceasing to operate the LIPD. Some LIPDs are designed so that they are 
able to be re‑tuned, to assist the user in avoiding interference locally.'

AKA, it reads to me that it is suggesting that it is the affected 
station which must deal with it.

However, when you then read paragraph 4(1)(b), it then puts it into 
context of the interfering station.

That said, your recourse for interference is only within the class 
license. If a ham radio operator (the primary licensee of the band) is 
knocking your network offline for an hour every saturday night, you just 
have to live with it, or choose another band (or, say, license your own 
bit of spectrum, so you become the primary service) :)

Of course, the owners of LIPD's aren't much use in stopping interference 
from their own devices either.. I've seen articles from WIA Vic many 
times where local repeater operators have had to get Workcover involved, 
to shut down LIPD's which were interfering with local repeater inputs, 
but the operators were ignoring all attempts to have the LIPD moved to a 
different frequency. (And workcover was able to be involved, as it could 
be shown that hitting transmit on a ham rig on the same frequency was 
shutting down a construction lift, crane, etc etc, making it a safety issue)

Yes, of course, you can raise it with the ACMA.. But with the stupidly 
low number of RI's they employ these days, you'll wait a good year to 
get some action..

Hmm, LIPD's, the bane of everyone's existence!

--DG

On 6/04/2013 6:07 PM, Paul Wallace wrote:
> Actually it's not quite correct to say that "you can't complain about interference".
>
> There's a couple of things in this ...
>
> All systems MUST comply with the Class License conditions. Therefore, if you're operating a class licensed system in say 2.4GHz, 5GHz, or 24GHz, that is adhering to the primary limitation of TX power & frequencies and another device operating on the same freq is operating in breach of the class license terms then the ACMA has the power to address the problem. IN those circumstances they would not be addressing the interference per se but rather the breach of the class license requirements.
>
> Beyond that, you may well have grounds to take your own legal action to have the offending device & it's operator restrained from continuing to cause harm to your business & possibly also to seek compensation for the harm caused.
>
> Here's a thoughtie ...
>
> A License does not protect you AGAINST interference, it provides the protection AFTER you get interfered with!
>
> -P
>
>
>
>
>
>
>
> -----Original Message-----
> From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Damien Gardner Jnr
> Sent: Friday, April 05, 2013 9:42 PM
> To: Tom Berryman
> Cc: Ausnog (ausnog at ausnog.net)
> Subject: Re: [AusNOG] Eureka Tower 24ghz
>
> Since we're nitpicking, the class license you're thinking of is only one of the licenses allowing operation on 24GHz..  The class license
> (http://www.comlaw.gov.au/Details/F2011C00543) allows 100mW EIRP between
> 24000 and 24250MHz, as a secondary service only (must not cause interference, can't complain about interference).
>
> The primary license for that band (Amateur License) allows 120W out the back of the transmitter, plus whatever antenna gain you manage to throw in there ;)
>
> --DG
>
> On 4/04/2013 9:21 PM, Tom Berryman wrote:
>> "class licenced" - not "unlicensed" -- ;)
>>
>>
>>
>> From: Ian Henderson [mailto:ianh at ianh.net.au]
>> Sent: Thursday, 4 April 2013 9:19 PM
>> To: Tom Berryman
>> Cc: Ausnog (ausnog at ausnog.net)
>> Subject: Re: [AusNOG] Eureka Tower 24ghz
>>
>> On 04/04/2013, at 9:11 PM, Ian Henderson <ianh at ianh.net.au> wrote:
>>
>>
>> The ACMA Radiocomms database might help http://web.acma.gov.au/pls/radcom/. I couldn't see anything on 24Ghz on the four sites returned searching for 'Eureka Tower', but the site might be called something else. Vertical Telecoms Pty Ltd has a lot of stuff up that end of the spectrum though.
>>
>> I've since been told that 24Ghz is unlicensed. Spot that guy thats
>> never done radio stuff. :)
>>
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>
> --
> Damien Gardner Jnr
> VK2TDG/VK2DGJ. Dip EE. GradIEAust
> rendrag at rendrag.net -  http://www.rendrag.net/
> --
> We rode on the winds of the rising storm,
>    We ran to the sounds of thunder.
> We danced among the lightning bolts,
>    and tore the world asunder
>
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-- 
Damien Gardner Jnr
VK2TDG/VK2DGJ. Dip EE. GradIEAust
rendrag at rendrag.net -  http://www.rendrag.net/
--
We rode on the winds of the rising storm,
  We ran to the sounds of thunder.
We danced among the lightning bolts,
  and tore the world asunder