hi there i seem to recall that RS232 transmissions should be done over short
cables. since there are only -3/+3v levels, is this true.

Since this transfer shall travel from 0.3 M - 200M i may need a potent
voltage level and a good shielding.

Which do you think is the best way too boost such a signal, should i boost
it straight from the output pin from the pic, with the help of a NPN
transistor, that drains say.. 12v-24v then convert that level of voltage
back to TTL with a 7805, is the 7805 fast enough? we are after all talking
1200 baud here, i do not seem to find a datasheet that describes this.

Or make some sort of optic transmission, ( which is less cheap ), via optic
cables, the positive side of this is that it wont be affected by
distrubances.

Hit me with some of your experiences in this matter, It would be be most
appreciated.


Greets
Robert

input...input... i need.. input...