Dumb question

This may be a really dumb question but what is the tone that I hear after most transmissions on police/firebands?

Thanks!

It would help to have more information, is it on conventional or trunked systems.
I'll take a fast guess and say it's an MDC1200 signal, of course I could be wrong.
Does it sound like this http://wiki.radioreference.com/index.php/MDC1200
If id does see here http://wiki.radioreference.com/index.php/MDC1200

Likely a "roger beep" type of thing like you have on many of those FRS radios to signify the end of a transmission.

I agree with n2mdk. Most likely it is some type of ANI.

Wisconsin State Patrol uses ANI on most of their mobile radios, however it comes over before the transmission, not after, and sounds like a type of squelch sound before the transmission starts (I can sort of duplicate it with my voice, but I'd have no idea how to spell it!). As a former dispatcher for WSP, I can say it is an extremely useful system, especially when radio traffic gets busy. Any time an officer keys their mike, their unit number automatically displays on the dispatcher's computer screen, in chronological order of when each unit keyed up. It makes it much easier for the dispatcher to keep up with each officer's traffic and not forget to acknowledge anyone. I could go more into depth about it, but I won't here.

Hopes this helps, although I know I babbled a bit.

Don