Lost in Transmission

The enemy is going to blow up a nuclear reactor. You are the spy tasked with preventing this. You must put in a combination to prevent the explosion. To find the 5 buttons to press you must listen to fellow operatives on the radio. Unfortunately, they are speaking in code, it is up to you to listen figure out which stations to listen to and which buttons to press. But watch out for red herrings.
Jam year: 
MS Windows
Tools and Technologies: 
Unity (any product)