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213 posts

Master Geek


Topic # 30087 28-Jan-2009 15:16
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Most of the ones I see work at 2.4 Ghz, which can apparently cause interference with wireless internet and wireless phones. How bad is this interference? Does a multi-channel receiver work around this interference?

I`m just looking at the real cheap options, some of these say that the signal strength is about 100 metres in an open area. But what about through walls and in winding corridors? My receiver would be placed about 20 metres from the camera, but there would be a couple of brick walls or doors in the straight line or some winding corridors the long way around. How badly does this limit the reception?

Any specific models that you would recommend that are affordable and available in NZ? Of course I would wanna use it on my pc, so the cpu usage while recording is another aspect. Would I need a video capture card with hardware mpeg2 encoder in order to limit my cpu usage while recording?

Thanks guys for any input.




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  Reply # 192640 29-Jan-2009 01:22
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i dont know much of anything about security cameras but i've seen a few emails from this supplier containing various options: http://www.aplus.co.nz/m.aspx?m=Security perhaps if you call them they might be able to help?




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  Reply # 192646 29-Jan-2009 05:05
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All the analog wireless ones I have tried have being a big fail.

Most of the wireless video gear from asia is total crap, swirling interference is all over the signal, getting funny noise over the bright areas of the picture, hum bars etc.

Also they seem to just make them on any channel they feel like, regardless of other uses of them anywhere in the world.

Get a wireless IP camera or a camera server and run it over wifi - wireless composite video is just crap on the gear thats available. Plus you are exposing anyone in view of it to the whole neighbourhood to see.




Richard rich.ms

 
 
 
 




213 posts

Master Geek


  Reply # 192668 29-Jan-2009 09:39
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Hmmmm very useful info thanks. I don`t actually have wifi, I use a wired router, so I guess in terms of cost and quality I might as well just run a long ethernet cable and use a wired IP camera. What`s a decent affordable one you`d recommend?

Edit: Or if I'm thinking wired, I might as well stick with some USB webcam type thing, which would be really cheap. How long can a USB cable be to carry good signal?




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213 posts

Master Geek


  Reply # 192834 29-Jan-2009 23:34
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Just to update this, I`ve decided to just go with a couple of cheap USB webcams with USB extenders like such, because apparently USB cable length is quite strictly limited.

http://www.trademe.co.nz/Computers/Cables-adaptors/USB/auction-199455214.htm

It`s not as convenient as a wireless solution or an ip camera, but adequate for my needs.




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