1
                           general:: 
                            1. Adjust a receiver to receive a particular program or signals at a particular frequency, as in Tune in tomorrow, folks, for more up-to-date news. [Early 1900s] 2. Be aware or responsive, as in She's really tuned in to teenagers. [1920s] For an antonym, see TUNE OUT.
                        
                        
 
                        
                            American Heritage Idioms
                        
                        
                    
                    
                        2
                           general:: 
                            Phrase(s): tune in (to something) 
Go to tune in (on someone or something)., Phrase(s): tune something in 
to adjust a radio or television set so that something can be received.  •  Could you tune the newscast in?  •  Please tune in the station a little better., Phrase(s): tune in (on someone or something) [and] tune in (to someone or something) 
1. Lit. to adjust a radio or television set to receive a broadcast of someone or something.  •  Let’s tune in on the late news.  •  I don’t want to tune in tonight. 2. and tune in (to something) Fig. to pay attention to someone or something.  •  I just can’t tune in on these professors.  •  I listen and I try, but I just can’t tune in.
                        
                        
 
                        
                            McGrawhill's American Idioms And Phrasal Verbs