Hi all,

I want to interface my PIC project with the outer world using a low
baud rate RS485 interface (MAX488 full duplex, slew rate limited).
The maximum cable length is approx. 100 meters (333 feet) and could
be routed near other equipment which may cause interference on the
cable.

My question is, is it absolutely nessary to use a Shielded TP cable
instead of the more common UTP cable (CAT5)?
I was wondering this since RS485 is already pretty solid especially
combined with low data rates (2400 bps).

Thanks!

Bye,

Daniel...