If you want to have a more satisfying DMR experience and reduce potential frustration and system congestion, you SHOULD activate your radio’s Talk Permit tone.
The Talk Permit tone, aka, Go-Ahead tone, Call tone or something similar, is needed by the radio operator so they know when it is OK to begin speaking after pressing PTT.
The repeater sends the acknowledgement sound to your radio after approximately .5 to 1.5 seconds.
Talking blindly (no Talk Permit or Call tones enabled) tends to congest the system and is inefficient and impolite and you are likely not to be heard.
For example:
If you can’t hear the Talk Permit tone or the Bonk (rejected) tone, then you won’t know if it was OK to talk.
If the talkgroup is busy or the time slot is not clear for traffic, the system will reject your attempt to transmit into the system.