Kenwood TK-5320 - Manual (Page 37)

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VOX Operation
1 Connect the headset to the transceiver.
2 Press and hold the key programmed as VOX for
2 seconds.
3 To transmit, simply speak into the microphone.
• The transceiver recognizes sound levels depending on
the VOX Gain level. If it is too sensitive, it will transmit
when there is noise in the background. If it is not sensitive
enough, it will not pick up your voice when you begin
speaking.
4 When you finish speaking, transmission ends.
5 To turn the VOX function OFF, press and hold the VOX
key again, for 2 seconds.
Note: If a speaker/ microphone is connected to the transceiver
while VOX is ON, and the VOX Gain Level is set to a sensitive
level, louder received signals may cause the transceiver to
transmit.