1 votes 1 votes A modem constellation diagram has data points at the coordinates (0,1) and (0,2). What modulation the modem uses? phase modulation amplitude modulation Both None of these How to solve this type of Questions??? sh!va asked Jun 30, 2016 edited Oct 7, 2016 by go_editor sh!va 910 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.