On Jun 3, 2:50*am, "Phil Allison" wrote:
"benitos"
*"Phil Allison"
"benitos"



** That sounds like you have a ground loop in the cabling passing noise
into
the shield of the RG59.

Your 24VAC may well be the source.

Or possibly injection from AC power cables running along with the RG59.

Whatever, the pic should not contain noise or lines.

Right , there is a 400VAC passing near in the ground.

Is it possible to remove noise at the Display end?

** Find the cause and fix that.

If there is a common ground connection between the 24VAC and the RG59 -
that is it.

Co-axial cables are good at rejecting external magnetic field interference -
but may be subject to an AC electric field that runs alongside for 1500
feet.

.... *Phil

No , I did not ground the RG to the 24VAC