Boston’s talk radio yakkers have had a heavy hand in getting lawmakers to take notice and toughen up illegal immigrant measures, lawmakers and talk hosts agree, urging fired-up listeners all week to call state senators and demand change. “I have no doubt about it that the listeners of 96.9 Talk have had an impact. They were already there, ready to go,” said Michael Graham, WTKK-FM’s afternoon drive host. “The citizens are angry, they want to do something, they’re so frustrated.” “I’m not making a wave. I’m riding one,” Graham added. Graham and other talk jocks have launched their own grass-roots...