If you plan to talk for more than a few seconds at a time, you can set the PTT button (the big circle) to toggle mode so you don’t have to keep your finger on the button while talking. When in toggle mode, you press once to start talking and press once again to resume listening. You can talk for as long as you want, but someone can interrupt you after 20 seconds. Toggle mode is handy if you plan to conduct meetings or give lectures on a Zello channel.
To set the PTT button to toggle mode:
1. Select the Settings option located on the main menu.
2. Set the Toggle PTT button to “On”.