I need to form a serial communication between two points and looking for a solution. First I thougt convert my uart Rs232 to RS485 but this is limited with 1.2KM without repeaters. I can not use repeaters because the wires will be buried into ground with a pipe with 2.5m radius.
I also thought about wireless connection but the nodes are not in line of sight.
Any recommendations? Is there a transceiver which is capable of transmitting 9600bit/s serial data over regular / twisted pair wires?
This connection is very cost sensitive so I do not want to use expensive and special devices etc.
For that distance (10km) you have to consider optical fibre (Single-Mode) ..
Not only it provides noiseless, reliable data link but it is also cost effective ..
And 9600 baud is not a problem ..
Edit after I got price quotation for wires and wire mounting service costs :
I want to do this with wireless communication. The points are not in line of sight, there is a small peak between nodes. How can I form reliable wireless serial communication between those two points? 9600bps is fairly enough...