From: utzoo!decvax!genradbo!wjh12!sob
Newsgroups: net.micro
Title: Re: RS-232
Article-I.D.: wjh12.181
Posted: Tue Mar 15 11:32:05 1983
Received: Tue Mar 22 19:06:46 1983
References: ucbvax.9

 we use rs-232 up to 700' with dz11s, dh11s and dh/dms over telco
type twisted pair wire. ( twist xd with a ground and twist rd with a ground)

the only terminals we have had problems with are old tektronics ones that
seem to drive only +5 volts as there "hi" voltage. ( most others use +12 )

for longer runs we use some home brew short hall modems ( 9600 at 10 miles)

              scott bradner
              harvard university
              ...decvax!genradb!wjh12!sob