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Topic # 204763 16-Oct-2016 12:40
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I'm a bit stumped. I have a roof-top UHF antenna, professionally installed, with line-of-sight to the DVB-T Mount Kau Kau attenna in Wellington.

I'm having real trouble with the Kordia stations, like Prime, but the TVNZ and MediaWorks are rock solid.

When I watch Kordia live, it stutters very badly, and most of the time the screen / audio is full of garbage.

As I said, TVNZ and MediaWorks are solid

MediaPortal signal meter even tells me as much, with 85%-100%, except on Kordia where it's 50%.

I have a Windows 10 PC, with the latest drivers for my TBS 6205 quad tuner.

Any suggestion how I can improve Kordia channels?
NextPVR software has the same problem

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  Reply # 1651901 16-Oct-2016 12:59
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Has it ever worked? Is it a new problem, or has it always been that way?
Are you sure the polarity is correct?
Are you sure the antenna hasn't been moved by the wind?




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  Reply # 1651909 16-Oct-2016 13:28
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Honestly, since I always record TV shows, instead of watching them live, I thought it was wind blowing around my antenna when a show recorded badly.

I only made the connection that they were all Kordia channels giving me grief ("Prime" really.)

It can record Prime sometimes, but it's borderline.

 
 
 
 


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  Reply # 1651917 16-Oct-2016 14:02
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What is your set up? If you can remove any splitters and amplifiers and get one device working ok across all the muxes, that’s a start.

 

Also what does the Freeview coverage checker say about your address?




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  Reply # 1651928 16-Oct-2016 14:45
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It's Windows 10 PC, 8GB RAM, SSD drives, all Intel chipset, g4500 CPU @ 3.5 GHz

Video capture card is TBS 6205 quad DVB-T tuner, about a year old also.

It's a dedicated PVR, currently with NextPVR (also tried MediaPortal)
No splitters or amps, but I am in a high-wind area. It affects Kordia the worst, by far

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  Reply # 1651956 16-Oct-2016 16:38
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knoydart:

What is your set up? If you can remove any splitters and amplifiers and get one device working ok across all the muxes, that’s a start.


Also what does the Freeview coverage checker say about your address?



Read the first line of his post

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  Reply # 1652040 16-Oct-2016 19:24
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kingdragonfly: It's Windows 10 PC, 8GB RAM, SSD drives, all Intel chipset, g4500 CPU @ 3.5 GHz

Video capture card is TBS 6205 quad DVB-T tuner, about a year old also.

It's a dedicated PVR, currently with NextPVR (also tried MediaPortal)
No splitters or amps, but I am in a high-wind area. It affects Kordia the worst, by far

 

Sounds suspiciously like some kind of local interference affecting just the one frequency (Kordia MUX). Antenna movement with wind would most likely affect all MUX. Is it constant or only at certain times?




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  Reply # 1652051 16-Oct-2016 20:27
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More or less constant bad signal from Kordia. I am trying to find a "wind-proof" antenna, if such a thing exists.

I've read about using two antennas

http://www.tvantenna.com/support/tutorials/combining.html

and even thought about using a boat / caravan antenna, with a radome.

I could also give up on Kordia with DVB-T, and use an old Sky dish and buy a DVB-S tuner.

I have a steel roof, so I guess an attic antenna won't work

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  Reply # 1652052 16-Oct-2016 20:34
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I don't have a solution for you, but I do have exactly the same problem.  Prime & Choice TV rubbish - everything else fine.  Mt Kau Kau - clear line of sight.  This has been going on for a long time now ... years maybe.  This is through both my HTPC and TV.  I've pretty much given up on them.  I'm in Newlands - I can see the transmitter when I climb up to play with the aerial!


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  Reply # 1652061 16-Oct-2016 21:54
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Instead of everyone guessing whats wrong why not call an installer with the relevant spectrum analyser.





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  Reply # 1655416 20-Oct-2016 22:26
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Does your pc using HDMI cable? If so try disconnect HDMI and see what if improve.

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  Reply # 1655422 20-Oct-2016 22:48
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Could it be too much signal? I've been browsing a few websites while I try to sort out our own TV reception, and apparently too strong a signal can confuse the automatic gain control in TVs. You could try putting an attenuator like this:

 

https://www.jaycar.co.nz/variable-attenuator/p/LT3050

 

in and see if that makes a difference. 

 

The other possibility I've read about is a faulty street light putting out interference.

 

 




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  Reply # 1692151 19-Dec-2016 12:34
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OK This is the world's stupidest solution to a problem.

A UHF antenna has elements that stick up about every 8 cm.

The antenna installer failed to lift the elements of the antenna; they were shipped laying down horizontal to pretect them. They flip up, and a notch holds them vertical.

A different antenna installer said the other guy was an idiot, and always left the elements down, in its shipping state.

He flipped the elements to vertical, without even needing any tools.

I noticed my neighbor's house, who used the same idiot, also had her elements horizontal (in its shipping state), not vertical.

No telling how many antennas this guy has installed in our neighborhood, Churton Park / Johnsonville in Wellington.

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  Reply # 1692173 19-Dec-2016 13:27
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Hahahaha..... What a Muppet!

 

Did you send the installer over to the neighbour?


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  Reply # 1692519 19-Dec-2016 22:57
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Please name and shame them!

 

For future google search results..


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