You're welcome. And just so you know, the Federal government, specifically the Department of Homeland Security, is trying to get police and fire departments to get away from codes and start using "plain text" (English), at least when they are involved in mutual aid incidents.
With a bazillion different codes out there, it can be a problem when people are all accustomed to their own codes. A great example was Katrina, where police and fire folks from all over the country were there, trying to work together. Besides the RADIO problems themselves, there was quite a bit of confusion when people from, say NYPD, New Orleans, and the California Highway Patrol would try to talk with each other... each using totally different radio codes.
It's not likely to change overnight, though. At first the gov't was threatening to cut off Homeland Security funds for anybody who didn't just get rid of the codes completely. They found out real quick that THAT just wasn't going to happen. So now they're just insisting that everybody learn to use plain English when they work together in "mutual aid" disasters.
We'll still be hearing codes for years, though. Nobody changes old habits that fast.