cable for security cameras
- Thread starter betrickey
- Start date
Actually, the rg59 IS better for security cameras than RG6. The reason why was explained to me once at an HA integration class, but I've long since forgotten it.
That said, unless you are running long lengths or looking for super quality pictures, go ahead and use the RG6. The difference in quality is not that great, and most importantly, you already have it. Take the money you save and buy another Insteon/z-wave/X10/upb switch.
That said, unless you are running long lengths or looking for super quality pictures, go ahead and use the RG6. The difference in quality is not that great, and most importantly, you already have it. Take the money you save and buy another Insteon/z-wave/X10/upb switch.
Steve
Senior Member
It appears there is no real reason (at least in my searching) to use RG59. RG6 should be just as good for short distance and is required for longer distances. There is however a lot of difference between the brands, etc. For security, Siamese cable is also popular. This has the coax and power in the same outer sheath. Here are a few links with some info.
http://www.epanorama.net/documents/video/videocoax.html
http://www.pelco.com/support/videosecbasic...ctingcable.aspx
http://www.hometoys.com/htinews/jun03/arti...clark/clark.htm
http://www.epanorama.net/documents/video/videocoax.html
http://www.pelco.com/support/videosecbasic...ctingcable.aspx
http://www.hometoys.com/htinews/jun03/arti...clark/clark.htm
It came during a camera manufacturer presentation at Worthington University (integration classes run by Worthington Distribution) back in 2004. I was surprised by it also, but since the explaination was understandable (and believable) and the rep would have no ulterior motive for pushing a specific type of cable, I tend to believe it. It'll take some digging to find my notes, as they are buried in a pile in the corner. (or is it that pile over there, or maybe that box, or maybe in one of the two boxes I put up in the attic, or.......... 
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rocco
Active Member
J, it sounds like you use the same filing system as I do. That means it is at the bottom of the pile that you look in last. The furthest, hardest to get to, under the most dust one.jlehnert said:It'll take some digging to find my notes, as they are buried in a pile in the corner. (or is it that pile over there, or maybe that box, or maybe in one of the two boxes I put up in the attack, or..........
The advantage of RG-59 may simply be that it is "good enough", and tends to be smaller-diameter and more flexible than RG-6.
Also, some RG-59 has lower capacitance-per-foot than some RG-6 (the best and worst of each are roughly equivalent to each other in C/ft). This capacitance is the significant contributor to attenuation (at high frequencies) in a high-impedance base-band circuit, as opposed to a 75-ohm impedance-matched RF circuit.
- Dennis Brothers
Also, some RG-59 has lower capacitance-per-foot than some RG-6 (the best and worst of each are roughly equivalent to each other in C/ft). This capacitance is the significant contributor to attenuation (at high frequencies) in a high-impedance base-band circuit, as opposed to a 75-ohm impedance-matched RF circuit.
- Dennis Brothers
