Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




438 posts

Ultimate Geek


Topic # 86558 8-Jul-2011 13:35
Send private message

Hi there everyone at Geekzone, Im writing this post with the purpose to find out your opinions and experiences in regards the signal strength and signal quality you get through Freeview sat.

Im currently running freeview from my DIY pc build HTPC and I have notice that some of the channels jerk or have like a dvd when scratched kind of bad performance despite other channels looking quite good.

this is what im getting at the moment:

Signal strength 94-96%
Signal quality   55-68%

I thought that was ok enough to watch digital tv with good quality picture however some channels like stratos, C4, shinetv, U tv are not sharp clear?? however TVNZ7 and tv2, 3, 1 and even prime are sweet 4ss but Prime lags or jerks i dont know the word to discribe it.

In your opinion or experience what is the optimal signal quality that I should be getting for cristal clear image.


thank you,


Andy

Create new topic
1921 posts

Uber Geek
+1 received by user: 135

Trusted
Subscriber

  Reply # 491080 8-Jul-2011 13:52
Send private message

Sounds like skew. Your strength is high but your quality is a little off, hence you are getting some MPEG issues on Prime.

As to overall picture quality, some of the channels will appear a little soft due to the compression levels in use.




Generally known online as OpenMedia, now working for Red Hat New Zealand as a Solution Architect for all things Linux, Virtual and of course Cloud. Still playing with MythTV and digital media on the side.

62 posts

Master Geek


  Reply # 491122 8-Jul-2011 15:07
Send private message

What do people use to measure signal strength and quality? I'm using mediaportal 1.0.3, which unless I tell it to re-tune all the channels, I'm not able to find out the strength or quality (unless I'm missing something). Thanks, and sorry if off-topic

 
 
 
 


1034 posts

Uber Geek
+1 received by user: 43

Trusted

  Reply # 491152 8-Jul-2011 15:40
Send private message

Do you mean MP 1.1.3?
If so then you should be able to get strength and quality readings by using the "manual" section in TV Server configuration or right click + select "tuning details" when watching live TV. The values are meaningless from an absolute perspective ("50% quality" means nothing because... well, what is it 50% of?) but you can at least use it to determine whether signals are weaker or stronger from day to day. Anything more than that is guessing, and you should really get a professional in to measure BER (bit error rate), SNR (signal to noise ratio) etc...

mm



438 posts

Ultimate Geek


  Reply # 491163 8-Jul-2011 16:10
Send private message

so 
mm1352000 so are you saying 50% is not enough for smooth picture?
I will climb the roof now and see i can raise the quality signal is i can.

591 posts

Ultimate Geek
+1 received by user: 28

Trusted

  Reply # 491164 8-Jul-2011 16:11
Send private message

As mm.. says , they are only a rough guide.
If your S&Q are not up to scratch you will soon know ,as it may drop out in light / medium rain

2615 posts

Uber Geek
+1 received by user: 204

Trusted

  Reply # 491175 8-Jul-2011 16:20
Send private message

I notice there is also some strange interlacing issues going on with U and TVNZ7 on Freeview Sat.




Check out my LPFM Radio Station at www.thecheese.co.nz cool

 

 

 

Use this link to sign up to Bigpipe broadband and you'll get $20 off your first bill: Referral Link


62 posts

Master Geek


  Reply # 491261 8-Jul-2011 20:11
Send private message

Thanks mm. Yes MP 1.1.3
Signal level and quality are both zero for SBS for me. :(
Signal level is zero for TV 3 etc, but 100% for strength.
One and TV 2 have no issues.

1034 posts

Uber Geek
+1 received by user: 43

Trusted

  Reply # 491267 8-Jul-2011 20:36
Send private message

@GamerOC: my comment was more directly addressed at password1, but it may also apply to your situation. The Freeview satellite signal is relatively strong, at least compared to the SBS signal. It is hard to tell from your description whether you're experiencing signal problems or codec problems, especially since you claim that a mixture of channels on both transponders are okay while others are not.

@password1: receiving SBS requires a stricter dish alignment. You may find that the skew on your LNB is not quite right. Fine (5mm or less) adjustments can be made to try to improve the situation.

62 posts

Master Geek


  Reply # 491271 8-Jul-2011 21:02
Send private message

mm1352000:

@password1: receiving SBS requires a stricter dish alignment. You may find that the skew on your LNB is not quite right. Fine (5mm or less) adjustments can be made to try to improve the situation.


Thanks again mm. I've been messing up my strengths/qualitys/levels terms

SBS fluctuates from 0 to 100 in signal level (usually 0), but stays on 0 for quality. I've just tweaked the lnb and it made no difference to sbs, but made the tv 3 level go from 0 to 100. Giving up for the night.



438 posts

Ultimate Geek


  Reply # 491307 8-Jul-2011 23:46
Send private message

thank you guys for your help and I have played with the dish and now is working fine just a liitle playing with it with sat finder. I think the image is very good and im very happy with it. 
I also check prime and is better but flicks or i see the picture fragment in to little squares for a quarter of a second then all smooth but only happens like every once and a while.
this weather sucks so i give up on climbing the roof while when and windy so will let you know if i get it sorted,


cheers,


Andy 

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

New Zealand hits peak broadband data
Posted 18-Jan-2018 12:21


Amazon Echo devices coming to New Zealand early February 2018
Posted 18-Jan-2018 10:53


$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27


Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02


Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54


How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52


NOW to deploy SD-WAN to regional councils
Posted 19-Dec-2017 19:46


Mobile market competition issues ComCom should watch
Posted 18-Dec-2017 10:52


New Zealand government to create digital advisory group
Posted 16-Dec-2017 08:47


Australia datum changes means whole country moving 1.8 metres north-east
Posted 16-Dec-2017 08:39



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.