How far can I run 734 and 735 coaxial cable w/o a repeater,?

735 coax should be good for at least 300'.

734 coax ahould be good for at least 450'. I've heard of people getting 500 and even 600' though.

Sam

Sam is correct. If you're in doubt of the length, 734 will be your best bet.

734 without a doubt. 735 should only be used to x-conn at a dsx-3 panel or for a connection to CPE a very short distance away from the dsx-3.