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95 posts

Master Geek


Topic # 98193 26-Feb-2012 11:40
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I Just plugged in my Dish TV T1020 aligned my UHF aerial and picked up 8 channels. 

TV3; 3+1; Prime; Chinese TV; Trackside; C4; FOUR; Maori TV

Notably absent are TV1 and TV2...I don't care about the other channels but 1 & 2 are important. Does anybody know what is going on there?

My signal strength seems quite good overall above 60 - 70% signal quality is around 50 - 60% so it should all work...

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Uber Geek
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  Reply # 586965 26-Feb-2012 15:34
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paragonOfGeek:

My signal strength seems quite good overall above 60 - 70% signal quality is around 50 - 60% so it should all work...


You may need some more sugnal strength and/or quality. Those levels are  near marginal for some receivers. What's the signal/quality like on the other 2 muxes? Tried a manual tune?



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Master Geek


  Reply # 586983 26-Feb-2012 16:29
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I have tried a manual tune, there are some very marginal signals from ch35. ch33 and ch37 are coming through quite well.

Prime is very marginal, there is a tree in the way that may need a prune. But I would have thought since they are all coming from the same transmitter the signal power would be very close.

 
 
 
 


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  Reply # 587053 26-Feb-2012 19:43
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paragonOfGeek:
Prime is very marginal, there is a tree in the way that may need a prune. But I would have thought since they are all coming from the same transmitter the signal power would be very close.


Unlike some areas the Taupo channels are close together so all should be of similar strength.
I presume your antenna is vertical and not horizontal? Taupo channels are Vertical polarization.
If all else fails then assuming you have a good antenna with good rg6 co-ax you probably need a masthead amp.




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Master Geek


  Reply # 587627 27-Feb-2012 22:47
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It has occurred to me that maybe the transmitters for the different channels are not on the same transmitters (like the analogue signals here). Does anybody know for sure that the freeview channels are transmitted from the same tower?

If they are not then someone needs a kicking!!!!

but that would be extra stupid....

How critical is alignment to signal strength? There is a tree in the way I can't see where the aerial is supposed to point, if I'm off by a few degrees how much will my signal suffer, noting that TV3 is coming in very well.

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  Reply # 587682 28-Feb-2012 08:43
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paragonOfGeek: Does anybody know for sure that the freeview channels are transmitted from the same tower?

How critical is alignment to signal strength? There is a tree in the way I can't see where the aerial is supposed to point, if I'm off by a few degrees how much will my signal suffer, noting that TV3 is coming in very well.


The transmitters are at Whakaroa.
See here
http://www.freeviewshop.co.nz/digital-terrestrial-i-8.html
And yes moving the antenna slightly can make a difference in marginal areas as can the type of antenna (broad or narrow capture area). See also the antenna page at the same website.

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  Reply # 588791 1-Mar-2012 12:13
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I've noticed that at least once a week for the last 2-3 weeks in the Manawatu, all TVNZ channels have disappeared for many hours, starting around 12/1am.

Transmitter problems or are they doing service work etc ?

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  Reply # 588802 1-Mar-2012 12:32
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The Manawatu loss signal loss is most likely to be prep work for the restacking on March 13th - see here for further details

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  Reply # 589440 2-Mar-2012 15:12
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Thanks for the link.

Last night was TVNZ's turn to disappear for a few hours.

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