Quote Originally Posted by NevBull View Post
CAT5 UTP cable is not screened, but CAT5 STP is. But you know that.These adapters are designed to be good for runs up to 250m. But obviously they can be affected by 'atmospherics' as can any signal cable

Nev.
there are many levels of things that need to be checked -
there is the signal, the protocol, the connector, the cable.

For example you cannot run cat5 Gigabit 1000BASE-T ethernet to 250m- whatever kindof cable - because of the way ethernet works - not the cable.
its the time delay associated with packets.
that's not a transmission line problem.