Herb tells Johnny in the opening segment about a personal appearance for a used car dealer, when Johnny says he doesn't do personal appearances. Earlier in the series, Johnny did a remote for a stereo store, which is a personal appearance.
Major Hunter stated he had been in Vietnam. He was not wearing a combat patch or overseas bars on his right sleeve.
Venus reveals his real name to Andy, indicating they didn't really know each other before working together at WKRP. Later in the series, it is suggested that Andy knew Venus (Gordon) before and helped him create his on-air persona.
When Andy asks Bailey if she has the home addresses of the staff, she says yes, and the first one she looks for is Johnny Fever. While she admits to not having his home address, Fever is Johnny's air name. She should have looked under Caravella.