Digital TV Technical Discussion

Commercial TV stations have TV licences to broadcast television and are allocated spectrum in the TV bands. They don’t have radio licences.

Additionally if they broadcast a radio station in a market where they already have stations they would run into all sorts of problems with ownership limits and diversity of ownership.

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Thanks. That answers my question then.

[quote=“TV.Cynic, post:173, topic:273, full:true”]
Commercial TV stations have TV licences to broadcast television and are allocated spectrum in the TV bands. They don’t have radio licences. [/quote]Technically, my question was about providing an audio stream as part of their existing tv service multiplex.

[quote=“TV.Cynic, post:173, topic:273, full:true”]Additionally if they broadcast a radio station in a market where they already have stations they would run into all sorts of problems with ownership limits and diversity of ownership.
[/quote]Not at all. It would be no different to stations in DAB+ areas having as many digital stations as they can fit into their allocated original and purchased additional bandwidth. The limit is on the number of analogue licenses owned only, not the number of services provided. For example how stations such as 2ST and 5AU are able to broadcast different versions of their stations for two different towns in the license area (and also run an FM service).

A house in a nearby street has mounted a second TV antenna that has me mystified as to what they are trying to achieve. The house is towards the bottom of a hill and the existing antenna is a combined VHF/UHF on a 3-4m masted directed at Mt Coot-tha - it has to be faily high as there is another hill between the house and the transmitters. The new antenna is a high(ish) gain UHF only antenna (yagi with reflector) and it is pointed in the exactly opposite direction.

I initially thought it might have been trying for the Brisbane station relays from South Sunshine Coast as they would be a possible good choice with an unobstructed path and that the owners did a DIY job but mounted the antenna at 90 degrees to the correct line. But now I am thinking they were really trying fro Mt Cooth-tha and have mounted the antenna backwards (and used the wrong antenna). Currently it is pointing out to sea! I wonder how it is working out for them.

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Yes, sounds like a poor installation.
Maybe the wind has blown it around …

Is it vertically or horizontally mounted?

If vertical, would have thought Brisbane SE or if. It, maybe even Gold Coast reception?

The only thing they got right was that it is horizontally mounted! It is aimed towards the east or the ocean so it wouldn’t get anything from the SE Brisbane or GC transmitters. So at the moment, they have a reflector pointing at the transmitters.

For what it’s worth, the LCN name of ABC3 has already flipped over (probably happened at midnight, but I can’t confirm) to ABC ME.

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ICTV was denied a HPON licence for Alice Springs by ACMA, the excuse in 2014 being they had to plan for digital television. https://goo.gl/ZSPEvP (PDF)
ACMA has now issued a HPON television licence to ICTV as of last month.
http://web.acma.gov.au/pls/radcom/licence_search.licence_lookup?pLICENCE_NO=10086907/1

I wonder where Hunter Television stands regarding their application for a HPON licence, as they also had their application rejected.

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What’s stopping community TV applying for HPON licenses?

Exactly. How come Community TV is being forced off the air but groups like this are getting licences?

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ICTV is for VAST, not DVB-T.

It’s owned by Imparja so make it a multichannel.

The link shows that they have a DVB-T transmitter in Alice Springs… (571.5Mhz is UHF 34)

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My guess is that, with Alice Springs being located literally in the middle of nowhere with the nearest transmitters in Tennant Creek 500km away, there should be no reason to reject the application due to the vast availability of spectrum.

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What’s the LCN?

Their VAST LCN is 601, but I imagine the DVB-T simulcast will be in the 4x range.

Channel 9 Melbourne, Brisbane and Perth are now on Intelsat 19.

I’m guessing this is for TDT (Melbourne) WDT (Perth) and who knows about Brisbane.

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According to LyngSat, Channel Nine Melbourne, Brisbane and Perth were added to Intelsat 19 last week. Only SD channels have been added (no 9HD).
Theoretically, this means the channel can be seen in parts of South East Asia and New Zealand with a good satellite receiver.

There’s a few “MPEG4/HD” channels being broadcast, if that LyngSat listing is anything to go by.

I do wonder what’s the deal with having some of Nine’s channels on both Intelsat 19 and Optus D1 though.

Wasn’t Imparja broadcasting into NZ at one point via some tech savvy people with some sat receivers?

With SE Asia, that is possible if you are in southern PNG FTA.

Again, Imparja does still brodcast into PNG on LCN 5.

Oh and SCTV does too according to this eye opening list.

Wait, if these channels really are encoded as DVB-S2 Multistream you need a special set top box to watch these channels.

Just look at the frequency, they are all using the same one.

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The green coloured rows indicate MPEG-4 HD services.

Not necessarily. Nine utilise multiple platforms to get their services to various locations. These could simply be backup feeds. Also, they contain 9Life and Extra which aren’t carried by any of the joint-ventures.

Yep, their channel was on an Optus D1 transponder that beamed across both Australia and NZ until around 2008. They were pressured by NZ media to stop it as a lot of Freeview NZ satellite viewers could quite easily tune into it.

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