This episode, the seventh produced and the fifth aired, is atypical in a few ways. It has the fewest regular characters in it, missing Venus, Bailey, and Jennifer (the only episode she's not in). Much of the episode is really a showcase for members of the Committee comedy troupe: Hesseman, Hamilton Camp, and Garry Goodrow. Hugh Wilson was a fan of improv comedy and once said that his dream was to do an unscripted show with a cast of actors who could do improv -- anticipating Curb Your Enthusiasm by many years. It seems like this episode was the closest he came to that feel. Camp, a ubiquitous presence on sitcoms, gets one of his best parts in this episode.
A couple of minor controversies came from the episode. The entire writing staff at the time made cameos: Wilson (as the cop), Bill Dial (as Bucky Dornster the engineer) and Blake Hunter and the writer of the episode, Tom Chehak (as the two non-speaking cops). Apparently it caused some trouble with SAG that so much of the episode's cast consisted of non-SAG people.
Also, MTM and CBS were sued by writers who had submitted a spec script the year before (not for WKRP, obviously; it didn't exist then) with a similar theme -- a remote radio broadcast gets hijacked. The case made it to court, where the judge ruled that even if someone at MTM had read that script, there was no "substantial similarity" between the two scripts except for that one idea.