BNC /12v cable to cat6 poe switch

[collectors]

Hi, i am updating my home cctv & have new ip cameras & changed all cables to cat6 & fitted a poe switch in loft. Typically i have one camera fed buy the older BNC coax/12v pair that i cant change. Can i leave the old camera with the BNC & at the other end next to my poe switch fit just 1 balun & a short cat6 lead into the poe switch like image. Or any other suggestions would be appreciated.

 

[Dan]

Hi @collectors

Unfortunately, what you are trying to do is not possible.

You can use a Balun to send the analog COAX signal over a Cat6 cable, but you would then need another Balun at the other end to switch it back to a COAX cable to connect the camera directly to an analog DVR.

Baluns don't actually convert the analog signal, to connect an analog camera to a network switch you would need to put an Encoder between the camera and the switch to convert/encode the analog COAX video signal into a Network IP signal.

Most users just replace the analog camera because an Encoder is an expensive solution and will usually limit the resolution you can get from the camera.

Why exactly can you not replace this BNC COAX/12v camera?

 

[collectors]

Thanks for the quick reply. "Why exactly can you not replace this BNC COAX/12v camera?."
Was you thinking of replacing it with another camera? "Open to suggestion" I can replace the camera, but i still have the old cable going to the poe switch & its adapting this cable to plug into the switch. Are you suggesting fitting another type of IP camera with or possibly BNC COAX/12v cable connection & then use 2 balun.
This older BNC cable is run inside a flat roof, & other inaccessible areas & this is the problem.
Or should i look down giving it a 12v supply & possibly a wi-fi camera.
Thanks

 

[Dan]

Thanks @collectors

So you have an existing COAX cable that you cannot easily replace, the situation makes sense now because in your original post you said "all cables" had been replaced so I was confused why this camera was staying as an analog camera.

It might be possible to do something similar to your above Balun solution but for IP over COAX, you can use these MoCA Adapters but we've never used them and most of the discussion around them doesn't seem to relate to CCTV so not sure how well they will work.

The only guaranteed solutions would be to run a new Cat6 cable to a slightly different position and install a new IP camera or order an expensive Enocder to keep using the existing analog camera & cable.

 

[collectors]

You are right, & with a quite a few fishing rods & another look i think i might be able to do some cables down the soffit board void. Thanks

 

[hooos]

I think I had a similar predicament basically connecting a new IP camera to an NVR using an existing shotgun coax cable? For the network component I've found these work fine:

https://www.amazon.co.uk/dp/B09F3KZSQ9/ref=twister_B0CDCCN5JM?_encoding=UTF8&psc=1

For the power component, I used a 12VDC power supply directly into the camera (fortunately there was a mains socket handy).

If you don't have a camera-side mains socket to hand, you could put a 12VDC supply at the NVR end of the shotgun, and then connect the camera end of the shotgun directly into the 12VDC line socket on the camera (subject to the correct sized pins on the shotgun)

Second alternative, you could try splitting out the 48VDC from the NVR side PoE (before the RJ45-to-coax adapter) and injecting it back into the cat5 (after the RJ45-to-coax adapter) using one of these:

https://www.amazon.co.uk/Xiatiaosann-Ethernet-Injector-Splitter-Connector/dp/B09MSZB5J5/

(admittedly I've not tested this method myself so YMMV) Just whatever you do, make sure that you don't connect the shotgun power directly into the camera power, as the camera is expecting 12VDC and the shotgun will be carrying 48VDC.