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Author Topic: Video Camera  (Read 2192 times)

baking and welding audio

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Video Camera
« on: January 10, 2005, 02:44:15 pm »

What is the best way to get a video feed (one mounted camera) and a audio feed from the mixer to tv's in other parts of the building.

there are 10 tv's that need to get these signals. Is there some sort of device that will you allow to broadcast the feed over a vacant channel on the TV.

Any help would be greatly appreciated.

thanks
jc
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Dan Timon

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Re: Video Camera
« Reply #1 on: January 10, 2005, 06:00:59 pm »

baking and welding audio wrote on Mon, 10 January 2005 14:44

What is the best way to get a video feed (one mounted camera) and a audio feed from the mixer to tv's in other parts of the building.

there are 10 tv's that need to get these signals. Is there some sort of device that will you allow to broadcast the feed over a vacant channel on the TV.

Any help would be greatly appreciated.

thanks
jc


Hi, JC,

This is a very common need in the CATV business and one of the biggest suppliers is Blonder Tongue. They have a huge catalog and you may want to read through their stuff to learn how it all works, before you select a product. When you have an idea what you are talking about, you should be able to find the parts locally from a cable or CATV supply house. You will be surprised at how inexpensive the stuff is.

http://blondertongue.com/

Regards,

Dan Timon

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Hal Bissinger/COMSYSTEC

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Re: Video Camera
« Reply #2 on: January 11, 2005, 08:10:08 pm »

Just to narrow down the BT link, it's not the easiest to navagate. Have a look here- http://blondertongue.com/media/pdfs/catalog_classes/headend/ BAVM.pdf

The BAVM modulator is available in any channel from 2 to 135. I'm going to assume here that the TV's are fed from an off-air source and has some unused channels. If that is the case you can insert the output of the modulator into the system after any amplifier with a simple 2-way splitter. Be sure to adjust the level of the modulator to match the existing levels, you may have to pad it down if it won't go low enough.

If the source is a CATV system it's doubtful that any channels are actually not in use, there is usually something there in the way of a carrier at least. What you will have to do then is notch filter a channel out and replace it with yours from the modulator. Have a look here- http://blondertongue.com/media/pdfs/catalog_classes/headend/ cef.pdf

The channel elimination filter, chosen for the channel you want to get rid of, I would put before the house amp. You then combine the modulator output as above after the amp.

-Hal
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