UHF Reception: Different rooms = different result

Hello

We have just moved in to a new house in Otumoetai, Tauranga. The house has a number of TV aerial jack points in different rooms. What channels the TV tunes into varies with each of the jacks used. For example one room will get all channels except TV1, TV2, TV1 +1 and TV2 +1, another room gets all channels except Prime and Maori TV, another room gets all the channels but the TVNZ ones flick in an out (the signal comes in and out).

All plus go to the same external UHF antenna on the roof.

We have TV with the digital tuner built into the TV set.

Any help appreciated.

Mike

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Permalink Reply by Biggles on January 8, 2015 at 16:17

Sounds like you have a splitter somewhere with too many outlets for the available signal strength.

If you want to retain outlets in each room you'll need to add either a masthead amp or an amplified distribution system. Alternative add another antenna and run fewer outlets off each antenna.

A selection of items here that might help.

http://matchmaster.co.nz/domestic/amplifiers

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Permalink Reply by nzdtv.com on January 9, 2015 at 17:26

Is the antenna old? new? is there still a VHF antenna with combiner attached on the pole?

Have you gone into your roof and had a look at the wiring? just because a jackpoint is there it doesn't mean that its actually wired in. You could be picking up signal just from the cabling.

Also old saddle type splitters are a big nono and should be replaced.

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Permalink Reply by Mike on January 9, 2015 at 21:02

Removing all other rooms from the aerial splitter did the trick. 100% channels available now. Cheers!

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Permalink Reply by nzdtv.com on January 9, 2015 at 21:37

Give some more detail? was it an old saddle type clamp splitter?

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Permalink Reply by Biggles on January 10, 2015 at 7:46

And is it still inline or did you bypass it?

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Permalink Reply by Mike on January 12, 2015 at 16:28

Old setup was aerial into 6 way splitter. Swapped to 2-way splitter (as only have TV's in two rooms not every room in the house!). This gave a better result but still some minor pixilation on Prime and Maori channels. While a 2-way splitter being used now, only one output feed connected. Will try next a direct connection i.e. no splitter involved at all and see if that works.

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Permalink Reply by Biggles on January 12, 2015 at 18:52

Good choice and direct connect will give best results. Make sure any splitters are high quality and f sockets for all connections. There's a lot of cheap rubbish ones available. Ideally any unused outlets should be terminated with a 75 ohm load plug.