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steve123

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#26906 6-Oct-2008 23:09
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I've just bought a new Sony Bravia KDL-46V4000 LCD with freeview HD built in. I also bought a new UHF aerial 91 elements as I live in the Howick/Pakuranga area. I want to get Freeview HD but I dont know how to wire the actual antenna. The antenna is Hills Signal Master AX391. Can anyone help?

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scottjpalmer
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  #169462 7-Oct-2008 03:35
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Point the aerial at Waiatarua, that is look at the aerial as a big arrow and point the tail of the arrow at the big hill between Auckland and Piha that has the big transmitter tower on the top. If in doubt, point it the same way as your neighbours :-)

To wire the coax to the aerial, find the balun, which is usually a small plastic box or similar attached to the antenna, open it up and you should see a loop that it looks like the aerial coax should fit under and then 10mm or so away from that another screw. Get some RG6 coax cable and strip it back so the copper wire in the very middle can be screwed under the screw I mentioned above and strip back some of the very outer plastic coating so the wire mesh under it can make contact with the loop mentioned above when you screw it down tight. You don't want the mesh of the wire (the shield) or the core of the wire to be touching each other.

 
 
 

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mcraenz
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  #169470 7-Oct-2008 07:46
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Use  quad shield coax and avoid joins, splitters, and amps like the plague! i.e. One straight run from antenna to to TV.






 

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steve123

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  #169502 7-Oct-2008 10:23
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Thanks for the help but about the above... I have a tv that is crt that i want to keep, so what should I do? Should I use a diplexer???



Jaxson
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  #169504 7-Oct-2008 10:27
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Try your existing aerial to the crt in the new tv first.  See if it works.
A simple splitter with F connections can work ok and you might need to do this.
As Mcraenz says though, there is a loss in signal strength each time you use something along the way, so try to keep additional joins/splitters/amps etc to a minimum where possible.

steve123

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  #169510 7-Oct-2008 10:36
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Thanks for all your help so far. This is my plan of attack... I need to first mount the antenna, facing Waiatarau
                                                                                   Then I need to wire it up
                                                                                   Cut my VHF cable in half
                                                                                   Plug UHF and half VHF through to the diplexer
                                                                                   Connect the other end of the VHF to diplexer, leading to splitter
                                                                                   DONE

Do you think that will lose too much signal???  

scottjpalmer
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  #169553 7-Oct-2008 12:41
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Should be fine, that's a big antenna and that is the setup most houses use.

mcraenz
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  #169580 7-Oct-2008 14:10
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Yeah that should work a treat. If you have too much spare cash lying around you could dump the VHF and get a Freeview STB box for the CRT, then you just have to split the UHF once, but I don't think the diplexer would introduce much loss anyway.






 

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steve123

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  #169592 7-Oct-2008 14:35
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Thankyou all for your help

1gkar
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  #169691 7-Oct-2008 21:04
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Just for your reference & to let you know what can work, I have my UHF coax -older type connected through a Dick Smith 4-way coax splitter . One runs to my HVR-2200 TV tuner, one runs to, ah-em...somewhere else & the other runs to an amplifier to supply a UHF signal to my two 150MCE tuners.

I know its round-a-bout but it works surprisingly well considering I'm down a gully & my analogue (VHF & UHF) signals suffered from ghosting, even with the aerial up a two metre pole extension. My UHF aerial is a high gain model, similar to this.

Since I have hardware acceleration working, the signal is near perfect, with only the very odd drop-off. More than acceptable compared with analogue SD.




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steve123

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#170623 11-Oct-2008 16:02
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I went to try out my plan.... but then, to my surprise, I didn't get any signal at all, both for analouge and digital. I may of constructed the antenna wrong as it came "ready to assemble". Can anyone please help me? Ive just fallen into a deep pothole.

cyril7
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  #170626 11-Oct-2008 16:35
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Hi, maybe you need to explain exactly what you have done, maybe a couple of photos to show detail of how you terminated things, these are critical, the quality of the cable terminations that is.

Cyril

steve123

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  #170729 12-Oct-2008 16:48
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Well..... I have some of Freeview, but only the TVNZ channels, not TV3, C4 or the chinese channel. Can someone please help me?

cyril7
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  #170737 12-Oct-2008 17:29
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As I said in my previous post, I am happy to help but need to know what you have done, what antenna, cables, combiners etc, you location, would also help, just a suburb is enough.

Cyril

steve123

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  #170739 12-Oct-2008 17:34
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I'm using a 2m RG6 75ohm cable, a DSE diplexer, and a splitter, but i dont know what sort, as it is in teh roof and was inbuilt when we moved in. I'm in Howick/Pakuranga as said above. Hope this helps!

Spyware
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  #170751 12-Oct-2008 18:27
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Please post the part numbers used, e.g., L4474. Diplexors and splitters should have F type connections and you shouldn't use the saddle clamp type. If you've only used 2 m of RG6 then we can only assume that you simply left the existing cabling intact. If existing cable is older than 1998 then it is most likely RG59 but could be stranded core coax that needs replacing completely. You'll need to exaimine the core of the existing coax to see if it is solid.




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