Mystery Radio Sounds

[EastCoastSunrise]

I was listening to an old episode of Boston Med (

) as it was on my DVR, (the link is just there for reference) and I noticed the radio chirp / mic click in the first few seconds of the show. I was wondering what radio / system it's from as I have never heard it anywhere else. So I thought to enlist the Radio Reference community to see if anyone knew the answer. Any help in discovering more about this mystery radio sound would be awesome and greatly appreciated.

Regardless happy new year,
East

 

[nd5y]

The high-low double beep sound is 2175 Hz and 1950 Hz tone remote signalling tones