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.




332 posts

Ultimate Geek


#24660 30-Jul-2008 11:16
Send private message

I put my my rusty Sky UHF atenna last week pointing at Waitarua.  I get about 50% signal strength and 100% quality on the Freeview HD signals.
I had prelaid Quad sheild RG6 so I am fine with the cabling.  However would like to get a better antenna, as the current sky one is rusty and I think one mount for the connector box is broken.

Should I get antenna with more elements i.e. a 43 element?  can the original Sky mount hold this?

Current Sky one I have is this.


Whats this like? Although has less elements.




My opinions and ideas expressed in posts are solely my own and do not reflect the views of my employer in any way..


Create new topic
482 posts

Ultimate Geek


  #152673 30-Jul-2008 12:58
Send private message

although I am not an expert but having much hands on experiance but I believe that the type and style of antenna are directly related to where you are located and from what transmission tower you are recieving from. Sometimes getting a larger antenna or an antenna with additional "director" elements would give you no better performance that one with less apart from the fact you just spent more money. The key factor is condition of the antenna, connectors and cable. if you check with a local supplier they could give you more accurate information. FYI where i live we only have one like yours but on the other side of town they have the 12 element type as they recieve the signal from another location, signal strangth is 70% ( i can see the repeater from my roof) 100% quality


104 posts

Master Geek


  #152674 30-Jul-2008 13:02
Send private message

I have one of these http://www.dtvs.co.nz/index.php?main_page=product_info&cPath=3&products_id=18 

and it's nice, really well packaged and easy to put together, where I live i'm very exposed to the weather and this thing hasn't even moved it's great.

 
 
 
 




332 posts

Ultimate Geek


  #152680 30-Jul-2008 13:20
Send private message

I live out west Auck, Blockhouse Bay... I can see the Waitarua tower.  Which is where the rusty Sky one is pointing at.
So I go for one with more elements, is there a possiblity of overpowering i.e. too much signal.




My opinions and ideas expressed in posts are solely my own and do not reflect the views of my employer in any way..


183 posts

Master Geek


  #152711 30-Jul-2008 15:25
Send private message

I'm pretty sure a higher gain uhf aerial wont cause probs. But it will be a waste of moeny if it doesnt fix your signal issue. But you know rusty aerial can never be a good thing.


482 posts

Ultimate Geek


  #152713 30-Jul-2008 15:33
Send private message

JaBZ: I live out west Auck, Blockhouse Bay... I can see the Waitarua tower.  Which is where the rusty Sky one is pointing at.
So I go for one with more elements, is there a possiblity of overpowering i.e. too much signal.


There is not such a thing as overpowering, but as stated in the above post you would pay more for no additional signal, the elements trap and direct what signal it detects to the reflector and diapole, if the signal is weak additional elements recieve as much as possible, if you have a very strong signal you dont require as many director elements, in this case bigger does not mean better, in the future if you shifted location and signal was low, having bought the larger one you would protect yourself slightly. just a note on overpowering, what you can get if the signal is extremely strong is that it can interfer with nearby freqencies washing out the poorer signal, ie you get a ghost image from a different channel but that is not as common with the current techology

1539 posts

Uber Geek

Trusted

  #152717 30-Jul-2008 15:53
Send private message

I have one of these in Hawkes Bay  http://www.lincrad.co.nz/pshow.php?category_id=90&sub_cid=87&cat_name=&sub_cat_name=%27Gizmo%27%20%20-digital%20ready-%20%20aerials


Never had a problem with it, I get 94% signal

7557 posts

Uber Geek

Trusted
Subscriber

  #152723 30-Jul-2008 16:07
Send private message

Hi just because you have only 50% signal means nothing, 100% quality is more important. Because it is 100% (lets forget the absolute accuracy of the metering for now) then increasing the signal to 90 or 100% wont improve the picture on bit.


The typical Sky installed UHF antenna will only rust on the reflector, and unless its actually fallen off is unlikely to significantly effect performance. It is an advantage to replace the antenna with one with a better contructed balun and preferabley an Fconnector balun.

The one shown that you currently have is really only a 7element antenna (by Yagi description) not a 23element, its just 7 electrical elements made from 23 parts. Might I suggest one of these .

Cyril

 
 
 
 


7048 posts

Uber Geek

Trusted

  #152908 31-Jul-2008 09:58
Send private message

Yeah most UHF aerials/ aerials in general are made of aluminium so they don't rust.  The screws/clamps etc holding them in place usually rust and sometimes the plastic or the aluminium of the individual elements breaks as well. 

The big thing as Cyril has mentioned is the part where the RG6 Coax cable is attached to the balun.  If this is damp and rusted then you're going to have a problem right there.  You would notice an improvement by unscrewing the cable and lightly sanding away any rust at the connection part.  Replacing this with a F crimp connector type would be a great upgrade to most older existing UHF aerials.

Cyril, where can you suggest getting these F crimp balun parts from, they're not that common!  Cheers.

7557 posts

Uber Geek

Trusted
Subscriber

  #152909 31-Jul-2008 10:04
Send private message

I have a collection, PM.

Cyril



332 posts

Ultimate Geek


  #153422 1-Aug-2008 19:51
Send private message

Speaking of F connectors, when i called Hills-Signalmaster they said they recommended the AX343-F 43 Element with F connector cause it is for digital DTT. 
Called around coupe dicksmith any they dont have the one Cyril mentioned in stock.  But they do have the 43 Element AX343 not the AX343-F so they have one without the F connector. 
Woudn't they both be the same and have the same balun?  Just one is easier as it is F connector.?




My opinions and ideas expressed in posts are solely my own and do not reflect the views of my employer in any way..


Create new topic



Twitter and LinkedIn »



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 »

OPPO Find X2 Lite brings flagship features to mid-range 5G smartphone
Posted 29-May-2020 12:52


Sony introduces the digital camera ZV-1 for content creators
Posted 27-May-2020 12:47


Samsung Announces 2020 QLED TV Range
Posted 20-May-2020 16:29


D-Link A/NZ launches AI-Powered body temperature measuring system
Posted 20-May-2020 16:22


NortonLifeLock Online Banking Protection now available for New Zealand banks
Posted 20-May-2020 16:14


SD Express delivers new gigabyte speeds for SD memory cards
Posted 20-May-2020 15:00


D-Link A/NZ launches Nuclias cloud managed network solution hosted in Australia
Posted 11-May-2020 17:53


Logitech introduces new video streaming solution for home studios
Posted 11-May-2020 17:48


Next generation Volvo cars to be powered by Luminar LiDAR technology
Posted 7-May-2020 13:56


D-Link A/NZ launches Wi-Fi Certified EasyMesh system
Posted 7-May-2020 13:51


Spark teams up with Microsoft to bring Xbox All Access to New Zealand
Posted 7-May-2020 13:01


Microsoft plans to establish its first datacenter region in New Zealand
Posted 6-May-2020 11:35


Genesis School-gen has joined forces with Mind Lab Kids
Posted 1-May-2020 12:53


Malwarebytes expands into privacy with fast, frictionless VPN
Posted 30-Apr-2020 16:06


Kordia to donate TV airtime on Channel 200 to community groups
Posted 30-Apr-2020 16:00



Geekzone Live »

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


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



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.