Well, I've just been using NAC801, so I wouldn't have seen it. I might have to program in a second channel with NAC802 to see if I hear it.
NS9710, how many times have you seen 802, and do you know what tower they were on, or at least their approximate location when you saw it?
I wonder if NAC802 could be the South tower. That way dispatch would know what repeater to use without anyone having to say what one they are using.
The fire channel has different CTCSS tones, possibly for this reason. I know St. Louis County in Minnesota uses multiple CT tones like this because of the many repeaters they use.