I saw a wedding band get the effect for that song live with a small hand held megaphone. I know Tom Waits uses megaphones all the time and I've also recorded with them. If you don't have a megaphone you can use the eq method mentioned above or use distortion. Amp Farm or any amp modeling program will give a wide range for effects. And if you don't have any of these options, run your mic through a guitar effects stomp box. The classic orange pedal (i forget who makes it) works well. I've used all these approaches at different times to record some version of the telephone/distorted/am radio vocal. You also can run your mic into a guitar amp and mic that up. Experiment.