This tone is used to indicate to the user that they are clear to talk on a trunked channel. It can be programmed on trunked systems. It indicates that the radio has authenticated with the system controller and you are free to talk on the system. This can also be programmed on conventional channels with a DVRS workaround but this isn't intended on this radio.

This is what MDC-1200 sounds like when listened to in a raw transmission. MDC-1200 sends a 4 digit ID number over the air at the start, end, or both the start and end of a transmission. This specific ID burst contains the ID "0612"

This is an example of what a Quick-Call 2 broadcast can sound like. Quick-Call 2 uses 2 different tones as a paging system typically in public safety radio systems. This specific audio has the tones 389.0 Hz and 410.0 Hz.

This is an example of what a DTMF radio ID can sound like. DTMF is the same tone technology used on telephones to dial phone numbers. This specific audio has the numbers "0612".