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modulators

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antdickens - 07 Jun 2005, 03:24 pm
Is it possible to use a modulator plugged into an aerial socket?

I usually put them in the loft and have the aerial in and out but i have heard it is possible to put the modulator anywhere on the aerial loop.

So this got me thinking can i use the wall socket which is in just the right place somehow????
rory - 07 Jun 2005, 10:45 pm
an RF Modulator? And whats an Aerial Socket? I Normally just plug them into the nearest electric socket :-)
AVCONSULTING - 08 Jun 2005, 12:08 am
You have to use the modulator before you get to the splitter or splitters.
bob the b - 09 Jun 2005, 11:08 am
Are you trying to add a cctv channel onto the uhf band to view on tv sets?
antdickens - 09 Jun 2005, 02:06 pm
Yes, i was wondering if it was possible to use the modulator, which i'd normally put up in the loft, in the wall socket which the tv aerial to the telly goes in.

Therfore saving me runnning cables up to the loft.
rory - 09 Jun 2005, 03:02 pm
no you have to get the split before it goes off to the other TVs.
AVCONSULTING - 09 Jun 2005, 04:35 pm
As long as the modulator goes between the antenna and the TV you are ok. If you have multiple TV's then you have to put the modulator in line before the antenna splits off to the various TVs. You could have the modulator sitting on top of the TV, the antenna feeding into the modulator first and then going into the TV if you are only going to use it on that TV. Make sure whatever channel you are going to use is blank and you also might experience interference on the channel above and below the channel you are using depending on how close their frequencies are to the channel being modulated.
bob the b - 09 Jun 2005, 05:43 pm
Sounds about right.

If you need to distriute between all tvīs you will have to fit the modulator into the main feed Bfore it feeds the amp,you can fit it anywhere to supply a single tv.
Best to pick a channel which is 5 channels (each side) away from a signal as interference will play havoc with it.
You can use a pass filter connected to the main aerial which will remove the weak signals which normally render modulators useless!
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