Audio & Alerts · Menu 21
Squelch
Squelch threshold — higher values require stronger signals to open the audio gate.
Menu #
21
Options
0–10
Default
5
Category
Audio & Alerts
How to access it
- Press
MENUon the radio to open the menu. - Scroll with up/down arrows to menu
21: Squelch. - Press
MENUagain to enter the setting. - Use up/down to change the value, then
MENUto save, orEXITto cancel.
Related audio & alerts
RX Save— Battery-saver ratio — duty cycle of receiver active time vs sleep time in standbyVOX Switch— Voice-activated transmit — automatically keys PTT when microphone detects speechVOX Level— VOX sensitivity — how loud audio must be to trigger voice-activated TXVOX Delay— VOX hang time — how long TX stays active after voice drops, preventing rapid cyclingTX OVer Time— TX timeout timer — automatically ends transmission after this duration to prevent accidental long keydowns
See the full RT-900 menu reference for all menu items.