[LINK] Analogue TV frequencies not just used for TV, so spanner in works of spectrum sale
carl at xena.IPAustralia.gov.au
Wed Jan 24 17:19:24 AEDT 2007
On 22/01/2007, at 9:35 AM, Stewart Fist wrote:
> We supposedly use the international spectrum allocation for television
> transmission, yet Australia has never used Channels 12 to 27 in the
Because they are already in use for other purposes.
> Yet this is the best part of the UHF band for distance broadcasting
> important in Australia than elsewhere) -- and it exists as an enormous
> spectrum gap from 222MHz up to 526MHz. This was the obvious region
> to open
> up for digital TV, and this could have been done without needing to
> analog channels until they are totally obsolete.
There is no "spectrum gap". That is the part of the spectrum where
the vast majority of two-way radio and similar services sit.
> I've never managed to get an answer (that I trust) as to why these
> were left vacant, The authorities opened up the high end of the
> UHF band
> for 'so-called business and foreign language' broadcasting at one
> which meant that a set-top box was needed, because it was off the
> range of
> international TV tuners. Yet this on-tuner range from 12 to 27
> lies vacant.
It's not vacant. It's packed with other services like police, fire
brigade, ambulance, RFS, taxis, courier companies, etc. Where do
these services go if you reallocate the spectrum to digital
You can search the ACMA website for frequency allocations within a
certain postcode and frequency range. The form is at;
I searched for all allocations between 220Mhz and 525Mhz just in the
Sydney CBD postcode (2000) and it returned 1204 allocations. That
doesn't include allocations made in the surrounding postcodes.
The ACMA spectrum plan is at
which includes both a PDF text document and a PDF wall chart
detailing exactly the use of each bit of spectrum between 9 hertz and
The Australian spectrum plan conforms mostly to the International
Telecommunications Union (ITU) spectrum plan which, interestingly,
does not have TV channels listed between 220Mhz and 525Mhz.
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