NZ DTT Frequency list

[Apsattv]

NZ Digital Television Frequency Plan

Main transmission sites for 75% population coverage

Sets
DA TVNZ
DB TVWORKS
DC KORDIA

North Island Site Details

DA DB DC
29H 33H 45H Waiatarua, Auckland
28H 32H 40H Pinehill, Auckland
28V 32V 40V Remuera, Auckland
28V 32V 40V Sky Tower, Auckland
28V 32V 40V Infill, Auckland

46H 48H 50H Te Aroha, Waikato
49V 51V 47V Hamilton Infill, Waikato

49V 51V 42V Kopukairua, Tauranga

27V 31V 43V Mt Erin, Hawkes Bay
48V 50V 59V Infill Hospital Hill? Hawkes Bay

48V 50V 59V Wharite, Manawatu

45V 53V 57V Ngarara, Kapiti
48H 50H 59H Kaukau, Wellington
51V 53V 57V Fitzherbert, Wellington
51H 53H 57H Baxters Knob, Wellington
51V 53V 57V Infill, Wellington

South Island Site Details

47H 49H 50H Sugarloaf, Christchurch

43H 45H 53H Mt Cargill, Dunedin
47V 54V 57V Infill, Dunedin

Google Earth site are pins attached.

[openmedia]

The MED page containing all of the details, including changes for existing channels, can be found here - http://www.rsm.govt.nz/cms/policy-and-planning/current-projects/broadcasting/digital-television-2007-frequency-plan

[Azzaw1980]

I know this mite be a silly question, but whats an infill? and how does it work?

[MrElectricity]

I'm reasonably sure it's not when my wife gets her false nails infilled because they are growing out :D

[Apsattv]

Infill is for places that are shielded from the main transmitter site.

Translaters /Boosters etc good thing with digital is that in many cases you can reuse the same Freqs.

[cyril]

Translaters /Boosters etc good thing with digital is that in many cases you can reuse the same Freqs

As craig says a feature of the DVB-T COFDM modulation (as opposed to the ATSC's 8VSB system) is that it repeaters can be operated on the same frequency in the same/near coverage area, this is known as a SFN, Single Frequency Network. Basically the multiple Txs all appear as echos as if some geographical feature (hill) had caused an echo. COFDM can focus on the largested wanted signal and ignore echos, weather they are created by natural devices (ie hills) or nearby SFN Tx's.

You will note that in the above list SFN's are used for infills in many instances, ie in Wellington region, Fitzherbert, Baxters knob, and a still be defined infill Tx all share channels 51/53/57 something that would be hard to acheive in an Analog enviromnent without ghosting and diagonal and horizontal bars rolling around the picture.

Cyril

[kiwisteve]

I can remember Hayward's Hill being mentioned in discussions for a DVB T Infill

[Azzaw1980]

Thanks guys, then im just hoping that the "hamilton infill" will help get coverage in cambridge, as we are shielded from the te aroha transmitter by the ruru/te miro hills where the waikato 3/4 transmitter is.

[wiilliiss]

where is the list for hedgehope? coverage wise this one is the lowest of the major stations but still ahead of mt erin which is top of the list for secondary sites.
as for whakapunake,even phil johnston wouldnt take ch 11 there,opting for 3 bitza sites instead.

[Apsattv]

where is the list for hedgehope? coverage wise this one is the lowest of the major stations but still ahead of mt erin which is top of the list for secondary sites.
as for whakapunake,even phil johnston wouldnt take ch 11 there,opting for 3 bitza sites instead.

Hedgehope is only listed as a likely secondary site. If coverage expands from the initial %75

Channels would be on 43, 45 and 53

[kiwisteve]

It seems there is more to it than just population
Mt Egmont has been missed from the initial stage
but our tiny Transposer on the Kapiti Coast is in the first group
as well . Doesn't seem to make much sense !! :D:D

[Apsattv]

It seems there is more to it than just population
Mt Egmont has been missed from the initial stage
but out tiny Transposer on the Kapiti Coast is in the first group
as well . Doesn't seem to make much sense !! :D:D

It might be that some analogues have to be shut off or moved before major sites like Egmont can be fired up.

[wiilliiss]

actually mt egmont used to be fed from whariti via an intermediate site near waverly,wonder if this will happen again. as sky will lose their analogue freqs on 31 / 3 2010 freeview may win them for more services?

[kiwisteve]

Putting channel 11 at Whakapunake possibly would have had considerable
overlap in coverage with Mt Threave in Hawkes Bay .

Mt Egmont is still linked via an intermediate and dvb t source will go via the normal route .
Not aware of any channel changes to introduce DVB T to Mt Egmont

Sky would probably still have first right to renewal anyway under management rights anyway.

[krs]

Still thought Hedgehope in the middle of southland would lend itself ideally to DTT and get on the startup list. Covering a large percentage of southland and 70,000? people.

[kiwisteve]

Yes I cant understand one of the big 7 sites being missed out .
I would of thought your population would have beat Hawkes Bay ( mt Erin ) coverage area . I'm sure thats also more than our Kapiti population .
:D:D

[Apsattv]

If anyone wants a GoogleEarth plot of their location and the nearest DVBT transmitter site. Let me know and I will do some mock up pics like i've done in the regional viewers forums.

[mruane]

If you need the actual frequencies for the channels in the first post to this thread they can be found here: http://data.rsm.govt.nz/publications/dps/dp13.pdf

The spot frequency is the mid point between the high and low frequencies specified for each channel on page 12 of the above document. PS You need these to get the digital frequencies into Media Portal.

Cheers Mike

[herbie_g]

It seems there is more to it than just population
Mt Egmont has been missed from the initial stage
but our tiny Transposer on the Kapiti Coast is in the first group
as well . Doesn't seem to make much sense !! :D:D

Might have more to do with Kapiti being a major 'suburb' of Wellington than anything else, Steve. Makes up Wellington's urban population.:cool:

[kiwisteve]

also it makes Complete coverage from Manawatu to Wellington apart from a small hole in the Otaki Railway area ( in the hollow )
:D:D

[herbie_g]

also it makes Complete coverage from Manawatu to Wellington apart from a small hole in the Otaki Railway area ( in the hollow )
:D:D

Any luck getting @ your place Steve?

[kiwisteve]

With a 6m length of pipe on the chimney no luck
next week will try on my radio mast at 20metres level

[herbie_g]

Maybe Wharite will achieve some better results once it commences?

[wiilliiss]

what is the power differential between analogue & dtt transmitters? know mookau has 2kw for sky & 5kw trackside,wharite has 5kw for most,mt erin 500w usually,and uk analoge can be 1 megawatt erp.

[spy]

also it makes Complete coverage from Manawatu to Wellington apart from a small hole in the Otaki Railway area ( in the hollow )
:D:D
and most of upper hutt.... need way more infill to fill in the valleys... to get even close to the 75% that freeview dtt is claiming...

[vegas4]

RSM website says DTV licenses will be restacked (rechanneled) between April 2011 and May 2012, site by site...

http://www.rsm.govt.nz/cms/pdf-library/policy-and-planning/digital-futures-planning-for-digital-tv-and-new-uses/Long_Term_Digital_TV_Frequency_Plan.pdf

[mpj111]

Wellington , Kilbirnie / Miramar area, can I get main TX direction from Mt Kaukau.
If not getting, can I use Infill TX to that area, if so what is the direction (or where is the infill tx located ) for Kilbirnie

many thanks