Power line project

who can help me to design transmetter and receiver power line with LM1893.
I make a keypad+pic18f458+ LCD +Lm1893 in the transmetter
and in the receiver LM1893+pic16f877.
Are there any adjustements? and how can i schematic my project
help please

OK, make that now at least 5 threads on this subject! E

i haven't found a request