Indicator Tones
Audio Tones
High pitched tone
Identifying Status Indicators
Low pitched tone 
Positive Indicator Tone
Negative Indicator Tone
Alert tones provide you with audible indications of the radio’s status or the radio’s response to data received.
Continuous Tone A monotone sound. Sounds continuously until termination.
Periodic Tone Sounds periodically depending on the duration set by the radio. Tone starts, stops, and repeats itself.
Repetitive Tone A single tone that repeats itself until it is terminated by the user.
Momentary Tone Sounds only once for a short period of time defined by the radio.
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