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79 posts

Master Geek

# 29189 28-Dec-2008 11:09
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I currently only have a VHF antenna on the roof and just purchased a new Freeview tv set so obviously want to get some digital TV going. I have looked around a bit and just want to ask a few questions and make sure what I plan on doing would work and if not what would be recommended I do.

I would put a 23-element UHF antenna (from DSE) on the roof (same pole as VHF antenna) then plug them both antennas into a diplexer. Would this then carry both signals to the multiple tv's around the house? I don't want to lose my analogue TV signal as not all tv's have STB, else I could just replace the VHF antenna with a UHF one.

Is the 23-element antenna enough to get a good signal (I live in central Upper Hutt)? Would I be better to replace the VHF antenna with a VHF/UHF combo antenna? It is about the same price as the UHF one and diplexer anyway.

Thanks for the help :D

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Uber Geek


  # 186368 28-Dec-2008 14:21
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Hi, in central upper hutt you are likely to get best DTT reception off Fitzherbert (on eastern hills above NaeNae) rather than KauKau, especially if you can see Fitz, Stokes valley hills may proclude this so I would not discount KauKau as an option, there is also infill DTT tx on the cell site above Haywards power station (near quary) that may also be an option but is very low in power compared to Fitz and is also vertical and on the same channels.

But dont forget that Fitzherbert only has UHF transmitters so no TV1/2 analog which you will need to get from KauKua. Also Fitz is vertical and KauKau Horizontal, so each antenna will both need to be appropiatly polarised as well as pointing in the right direction.

I would stay with seperate VHF/UHF antennas as pointed out above you may require different polarities depending on the site that gives best coverage and if its Fitz or the Hayward infill it will be vertical while VHF off KauKau is horizontal. Also once the analog network is shut down you will want to rip out your VHF antenna which is easier if seperate.

Hope that helps, otherwise if you need professional help I recommand GZ user Brunzy who installs in your area.


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