That was a real police dispatcher's voice on Adam-12
You hear her voice all the time, but do you actually know who she is?
The series Adam-12 took special measures to ensure that they were portraying an accurate depiction of the police force, with one of those very special measures sitting (or rather, speaking) right under your nose. The dispatcher that you're so used to hearing over the police radio is actually Shaaron Claridge, who worked as a real police dispatcher for the Los Angeles Police Department.
Speaking of her role on Adam-12 to the Fort Lauderdale News, Claridge said, "I try to be as authentic as possible when I'm reading my lines." She also added, "If the script doesn't ring true, then I change it."
At the time of the interview, only Claridge's voice appeared in the series, though she had aspirations for something greater. She said, "Naturally, I'd like to be seen [on the show] too. What girl wouldn't? But so far it hasn't even been discussed." However, Claridge was able to appear, albeit briefly, in the show's fifth season.
Claridge spoke of her profession and explained, "I communicate with the various patrol cars 600-800 times in an eight-hour watch." The role also required quite a bit of emotional investment, and she said, "My work at the police department is tense because you never know what horrible situation the officers are going to find waiting for them."
Luckily, the job isn't all stress all the time. Claridge added, "But it's not all drama and violence. Most of the calls are to settle family disputes — usually on Friday and Saturday nights."