4
2.3 Microphone
1. Lock button/Press it again unlock
2. PTT button: Launch control button
3. Up / Down: In the system settings menu, upper and lower entry selection
4. Receiving indicator
5. Multifunction
6. Filter selection buttons：Selection of built-in filter
7. Mode selection button：Selection of working mode of the host
8. No indication
9. F1/F2 Custom set key
10. Memory write button
11. Frequency/Channel switching button
12. VFO-A / VFO-B switching button
13. No function
2.4 Display information description
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