HDC501

I'm new to the surveillance thing and i have not had a problem in 2 years untill today i put a camera HDC501 on a 20ft poll on my construction site the camera worked fine out of the box but after setting everything up and going inside to plug it in to the dvr and monitor i get the flickering, bars going up and down, and somethings the image going on and off when the bars distort the image bad enough. its a metal pole and the camera is screwed into a mounting plate i wielded to the pole the cable is pretty much a straight shot in to the office trailer window basically the metal chassis of the camera is being mounted against the pole might be the "ground" problem i read about ground loop isolator that needs to go at the camera-in.... right? or wrong the problem is that the cable is not an BNC cable but a 6 pin din cable!!!! is something as simple as placing a block of wood between the camera mounting bracket and the metal plate/pole the solution

Thanks for all the advice guys what i ended up doing was placing a piece of wood under the poll and wrapping sheets of plastic around any contact so far so good ill give it a few hours and see what happens points

i'll post it as soon as i can. since the pole in not "in" the ground but tied to the warehouse plus i have a antenna for a cb radio attached to it as well that's getting this popping static i can only assume it is the ground interference i'm just going to lift the pole and place a block of wood underneath that and where it touches the warehouse duct tape the contact points i don't know if im going about this all wrong but ill try to unground the pole

don't quiet understand what you mean