Microphone - Standard Horizon Eclipse GX1300 Owner's Manual

7.3 MICROPHONE

 PTT (Push-To-Talk) Switch
Keys the transmitter when the
transceiver is in radio mode.
 MIC (Microphone) Hole
Transmits the voice message with
reduction of background noise,
using Clear Voice Noise Reduction
Technology.
Be sure your mouth is about 1" (1.3 cm) from the MIC hole for
best performance.
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GX1300