If you connect the TTL outputs of the RS-232 receivers to the (TTL) inputs of the RS-232 drivers, you effectively get the original signals with plenty of current for any serial-powered device with an extremely simple circuit using MAX205.
Authored by
at
, Added: 16 Jul 2007
http://www.qsl.net.nyud.net/eb4eqa/serial_booster/serial_booster.htm
