Standard Horizon MATRIX GX3000S - Manual (Page 22)

GX3000S Page 22
PTT (Push-To-Talk) SWITCH
Keys the transmitter when the transceiver is in radio mode. If the transceiver
is in the intercom mode (between the CMP25 RAM+ or VH-310 Headset and
the GX3000S), or PA mode, it activates the GX3000S microphone for voice
communications.
MICROPHONE
Transmits the voice message with reduction of background noise, using
Clear Voice Noise Reduction Technology.
NOTE: Be sure your mouth is about 1/2 inch from the mic hole for best
performance.
[UP( )] / [DOWN( )] KEYS
The [UP(
)] and [DOWN( )] on the microphone function the same as the
CHANNEL selector knob on the front panel of the transceiver.
[16/9] Key
The [16/9] key on the microphone function the same as the [16/9] key on
the front panel of the transceiver.
Immediately recalls channel 16 from any channel location. Holding down
this key recalls channel 9. Pressing the [16/9] key again reverts to the pre-
vious selected working channel.