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Home > Archive > Home Automation > November 2007 > CCTV on my TV
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| INSPECTOR 2007-11-05, 1:25 pm |
| How can I connect my surveillance camera to my cable which feeds the
televisions in the house? I have tried to connect it into the cable line
using a modulator. This modulator tunes to channels that are not
broadcasting cable channels. But the result is a poor picture unless the
cable TV line is disconnected. It appears that the signal from the cable TV
is still blocking everything else on the line.
Do I need some kind of special splitter, filter, etc.
TIA for any help you can give.
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| sometimes its easeir to use the -video- in connection.
no modulator needed then.
"INSPECTOR" <u38827@uwe> wrote in message news:7ac56c3846bd8@uwe...
> How can I connect my surveillance camera to my cable which feeds the
> televisions in the house? I have tried to connect it into the cable line
> using a modulator. This modulator tunes to channels that are not
> broadcasting cable channels. But the result is a poor picture unless the
> cable TV line is disconnected. It appears that the signal from the cable
> TV
> is still blocking everything else on the line.
> Do I need some kind of special splitter, filter, etc.
> TIA for any help you can give.
>
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| You'll need filter and a splitter. The cable must pass through a filter
that cuts out the frequency of modulated camera signal. Then the two can
be mixed together with a standard 2-way splitter. The filters are
normally either low-pass, which passes everything lower than the
specified cut-off channel, or a notch filter that passes things on both
sides of the notch -- centered around your modulator output frequency.
To see what type of filters are available:
http://www.smarthome.com/_/ProductR...+filter&x=0&y=0
INSPECTOR wrote:
> How can I connect my surveillance camera to my cable which feeds the
> televisions in the house? I have tried to connect it into the cable line
> using a modulator. This modulator tunes to channels that are not
> broadcasting cable channels. But the result is a poor picture unless the
> cable TV line is disconnected. It appears that the signal from the cable TV
> is still blocking everything else on the line.
> Do I need some kind of special splitter, filter, etc.
> TIA for any help you can give.
>
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| INSPECTOR via HomeKB.com 2007-11-06, 9:25 am |
| mike wrote:
>You'll need filter and a splitter. The cable must pass through a filter
>that cuts out the frequency of modulated camera signal. Then the two can
>be mixed together with a standard 2-way splitter.
Thanks again.
--
Message posted via HomeKB.com
http://www.homekb.com/Uwe/Forums.as...e-auto/200711/1
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