Currently have roof-mounted TV ariel, cable comes in to front room - great reception (lucky me). Thinking of inserting a splitter, and running length of cable to rear of house to have TV there too (lazy me).
Presumably there's a limit on how long additional cable can be before signal deteriorates. Anyone have a feel for this issue?
Cheers
You will get signal loss by using a simple splitter - even if you don't increase the cable length. Much better to feed the downlead into a 2-channel amplifier - and then take separate cables from that to each set. Cable length would not then be an issue provided you use good quality low-loss co-ax.
It depends on the signal strength and the quality of the cable.
On 05/03/2004 John Andrews opined:-
It depends upon the signal strength and length of cable. You might find it better to put the splitter between the Video and TV (loop through). If this proves inadequate, then buy a multi way distribution amplifier. Ensure it has more than the outputs you need at the moment for future expansion such as a TV in the bedroom.
And ultimately the quality of the cable too.
Using ultra-low loss satellite cable is a bit more expensive, and fiddly, but can yield good results. It's CT125 grade you want, though CT100 is good enough for most jobs. Normal brown "TV" cable is much too lossy, and basically crap.
For the best job, you would want a distribution amplifier as near to the aerial as possible (though not nearer than about a meter). Distribution amps amplify the incoming signal before splitting it, but if it's a significant distance from the aerial, you get the by product of amplifying all the noise you've picked up on the way down too.
Always go for as low noise amp as you can find, noise is measure in decibels, which is logarithmic, so a noise figure of 4 is significantly greater than 3.
For the easiest job, put the distribution amp behind the TV, and split the signal into your front room, then cable to your back room with CT125 or CT100 cable.
Paul.
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cheers
witchy/binarydinosaurs
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