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Don Stephens thanks for that advice, ya I went with what I think is good coax the RG59 im only running six cameras at no more than 50ft and the last two cameras for a total of 8 will be around the 75-100 ft mark. I have six cameras now ran with the rg59 coax and bnc couplings on both ends. a friend of mine works for century link prizm tv and he got me the RG-59 20 awg solid copper center with 18 awg power cable attached to it, and my cctv system has a better picture on the tv im using vga cord from the dvr to the 42'' led tv and my 700tvl cameras are going bad and the ir leds are slowly going out one by one so im wanting to upgrade to (HD) or as close as I can get on a diy buget. I've had a talos 4ch dvr system for 5 years now and am wanting an uprade in picture quality and at night with the ir led. and at night the ir lights white out anything close to the camera say 6 to 10 ft and during the daytime the sun whites out a lot on the cameras so I figure I would find out and learn more about the dvr's and cameras before doing an upgrade??!!!!

thanks for that info Joeinamillion that was a good way to put that I wasn't sure what they ment?!!! so my next question is what is better for wiring cat5 or coax I have coax ran now but am wanting to upgrade all my cameras and even the dvr but not wanting to get or get into nvr's?? thought I would go the route of a 8 channel HDCVI DVR and megapixel cameras and add baluns, so I guess im asking would it be better to run cat5 or 6 rather than the coax?????

ok ya thanks for the info. Now whats the difference between dvr's that have 30 fps and 120 fps???

ok im a noob wanting to know what is true HDcctv and why do most dvr's only have one hd camera port? I have a talos 4 channel h.264 system with 4 700 tvl bullet cameras and im wanting to upgrade, now I just ran all new coax with power to the 4 cameras as now I want to go with 8 so I will add 4 more coax lines so my questions would be 1) is 1200 tvl cameras as good as megapixel and is that hd 2) what is the best dvr for hd or as close to hd on a buget 3) what is the fps all about, my dvr now is 30 so is the higher the better so im looking for the BEST high quality image on all 8 cameras and (when looking at my tv for viewing) on a budget