What’s the frequency, Kenneth?
237 hz
You know that they finally figured out what that was all about, didn't you? That guy was Dan Rather's new Soviet handler making contact with him but he said the code phrase, "What’s the frequency, Kenneth?", right there on the street and it freaked Dan Rather out for fear that some passerby would be on to them, so he didn't reply with the response phrase, "Five times a day and twice on Sunday, Ivan."