Yeah, big stars are more often jerks than not. They figure they have so many fans, they don't need to polite or patient with anyone. If they lose one friend, there's millions of others to replace them.
I've been reading this "Raised on Radio" book also, and admire the writing style. Especially the chapter, "Radio Noir-- Cops and Grave Robbers". I laughed out loud with the humor he used to describe Dragnet. However, I have found a couple of what I believe to be mistakes when he got to Lights Out, and when it comes to OTR books, one mistake often gets sited and repeated until it becomes a "fact". So in the interest of trying to prevent this, here are those two points I dispute. (Feel free to chime in if you have evidence to support or contradict these corrections):
page 313 (near end of 2nd paragraph, talking about Arch Oboler's plays): "Some were hideous even by today's gory standards, such as a Hannibal Lecter-like tale in which Peter Loree plays a man feasting on a brain."
I believe this is incorrect. That's not Peter Lorre. In fact, there's a good chance that skit never aired originally, but was written specifically for Oboler's 1970s record, "Drop Dead". (But with many missing Lights Out recordings, who can be certain if Oboler didn't use a bit sometime before, even though it's hard to imagine how it would have been worked into a play. It's a monologue that ends with the character saying "I like to eat brains!" That's a bit over the top for the 1940s, even by Light's Out standards.) The Drop Dead segment used someone who sounded a lot like Lorre, but you can tell it's not quite him. More importantly, the Lorre estate heard about it and complained. I can't remember my source, but I remember reading it and thinking, "I KNEW that wasn't Lorre!" You can hear it yourself here (under the heading "I'm hungry"): http://www.wfmu.org/onthedownload.php/album/4128
page 314 (3rd paragraph) "King heard Lights Out reruns in the 1960s on Dimension X, recalling especially Ray Bradbury's 'Mars Is Heaven!'
This can't be correct. King may recall it that way, but Lights Out was never played on Dimension X, and Ray Bradbury was never played on Lights Out, especially something as recognizable as "Mars Is Heaven".
But these are very minor details, and don't subtract from the overall enjoyment of the book. It's a fun read and I enjoyed it!