We just got fibre optic cable and man I get all kind of false signals on my digital scanner , any thoughts.?
Fiber optic cable on its own will not radiate any noise as it's not metallic, unless it has a gopher shield or it's "siamese'd" with twisted pair.
Almost all fiber cable has a metallic element in its construction. It is used to power regens, varmint shields and to transmit the locater signal. But your interference is probably coming from the electronics. It is digital with digital to analog converters and, as you know, digital electronics is known for generating noise.