It may be a single light that.
Electric fence making noise.
If you can here clicks on the line such as click click click or hums whines and buzzing noises then it s possible that the electric fence is creating interference.
All invisible fence systems have some type of indicator light on the transmitter that shows if the system is functioning and there is no break in the boundary wire.
These boards are nailed to heavy rails which in turn are supported by heavy posts.
I suggest walking the fence line when it is very dark to look for a small glowing arc.
This type of interference produces a characteristic.
Small transformers often have a thermal cutoff switch.
Options for the fence may include.
An electric fence can generate radio noise even if it is in otherwise good working order.
The operative word for noise barriers is obviously heavy.
Noises are caused by bad splices and connections or wires contacting something that causes a small arc.
This noise is not normal however and it almost always can be corrected.
Other possible sources of interference with the phone line include fluorescent lamps a light dimmer or electric motors.
Whenever noise from an electric fence causes harmful interference to a.
Stone wood cedar redwood steel sheeting straw bales and rammed earth.
Electric fences are generally about 1 second on and one second off.
Almost all radio noise generated by electric fences is caused by a spark or arcing of the electrical current across fence hardware.
Off on buzzing noises timed with a regular rhythm are often small permanently wired electric transformers heating pads fish tank heaters and older electric fences.
They usually pulse slower than an electric fence.