46
Transmitter Convenience Features
FT-891 Advance Manual
VOX (SSB/AM/FM Modes: Automatic TX/RX Switching using Voice Control)
Instead of using the microphone PTT switch or the “MOX” function to activate the
transmitter, the VOX (Voice Operated Transmit) system may be used for hands-free
activation of the transmitter, by the voice input to the microphone.
1. Press the [
F
] key repeatedly, to find the
“FUNCTION-1” list screen.
2. Rotate the
MULTI
function knob to select
“VOX”.
3. Press the
MULTI
function knob.
The VOX function will turn on.
4. Press and hold the [
F
] key for one second
to exit the “FUNCTION-1” list screen and re-
sume normal operation.
5. Without pressing the PTT switch, speak into the microphone in a normal voice level.
When you start speaking, the transmitter should be activated automatically. When you
finish speaking, the transceiver should return to the receive mode (after a short delay).
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To set the VOX to “OFF”:
1. Press the [
F
] key repeatedly, to find the “FUNCTION-1” list screen.
2. Rotate the
MULTI
function knob to select “VOX”, then press the
MULTI
function knob.
3. Press and hold the [
F
] key for one second to exit the “FUNCTION-1” list screen
and resume normal operation.
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The VOX function may be assigned to the [A], [B] or [C] key. Refer to “Changing the
function assigned to the [A]/[B]/[C] keys” in the FT-891 Operating Manual.
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The VOX Gain may be adjusted to prevent accidental transmitter activation in a noisy
environment. To adjust the VOX Gain:
1. Press and hold in the [
F
] key for one second to activate the Menu mode.
2. Rotate the
MULTI
function knob to select Menu Mode “
16-17
[
VOX GAIN
]”, and
then press the
MULTI
function knob.
3. While speaking into the microphone, rotate the
MULTI
function knob to the point
where the transmitter is quickly activated by your voice, without the back-ground
noise causing the transmitter to activate.
4. When the adjustment is satisfactory, press the
MULTI
function knob to save the
setting.
5. Press the [
F
] key to exit the Menu mode and resume normal operation.
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The “Hang-Time” of the VOX system (the transmit/receive delay after the cessation of
speech) may also be adjusted via the Menu mode. The default delay is 500 msec. To
set a different delay time:
1. Activate the VOX circuitry, if necessary.
2. Press and hold in the [
F
] key for one second to activate the Menu mode.
3. Rotate the
MULTI
function knob to select Menu Mode “
16-18
[
VOX DELAY
]”, and
then press the
MULTI
function knob.
