Just like in FO3, all radios that are playing as you traverse the Wasteland are tuned to the exact same station. (In this case, Diamond City Radio.) Yet, if you check the radio on your Pip-Boy, you can easily see that there at least two active and viable stations. (The other being Classical Radio.) Shouldn't there be some variety in what is being played? And the ability to not just turn a radio Off or On, but also to change the channel?