Vox (Automatic Tx/Rx Switching Using Voice Control); Monitor - Yaesu FT-2000 Operating Manual

T
RANSMITTER
VOX
A
Instead of using the microphone's PTT switch or the front panel [ MOX ] switch to activate the transmitter, the VOX (Voice
Operated TX/RX Control) system provides hands-free, automatic activation of the transmitter, based on voice input into
the microphone. Setup of the VOX system takes only a few seconds.
1. To start, set the [ VOX ] and [ DELAY ] knobs fully
counter-clockwise (to the left).
2. Press the [ VOX ] button to engage VOX operation.
3. Speak into the microphone in a normal voice level,
and rotate the [ VOX ] knob clockwise (to the right) until
the point where your voice input activates the trans-
mitter.
A :
Do not advance the setting of the [ VOX ] knob too
much, because to do so will make the transmitter re-
spond to minor background noises in your station.
4. Now stop speaking, and note the amount of time it takes
for the receiver to recover. If the hang time is too long
or too short; rotate the [ DELAY ] knob, while speaking
briefly into the microphone and then pausing, so as to
set the desired hang time. Clockwise rotation of the
[ DELAY ] control will increase the hang time.
5. To exit from VOX operation, press the [ VOX ] button
once more. We recommend doing this if you are going
to leave your station, to prevent inadvertent activation
of the VOX system by a ringing nearby telephone,
speaker audio from a TV, etc.
You may listen to the quality of your transmitted signal using the Monitor feature.
1. Press the [ MONI ] button. The "
pear in the display, indicating that the Monitor is turned
on.
2. During transmission, rotate the [ MONI ] knob to ad-
just the audio level from the Monitor. Clockwise rota-
tion of this knob will increase the volume level.
3. To switch the Monitor off again, press the [ MONI ]
button once more. The "
firming that the Monitor is now disengaged.
A :
If you are using the speaker for monitoring, instead of
headphones, excessive advancement of the [ MONI ]
knob can cause feedback to occur. Additionally, this
feedback can cause the VOX system to hang up in a
loop, making it impossible to return to receive. There-
fore, we recommend the use of headphones, if at all
possible, or the minimum usable setting of the [ MONI ]
knob, if the speaker must be used.
Because the Monitor feature utilizes a sampling of the
transmitter's IF signal, it can be very useful for check-
ing the adjustment of the Speech Processor or Para-
metric Equalizer on SSB, and for checking the general
signal quality on AM and FM.
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C
ONVENIENCE
TX/RX S

MONITOR

SSB/AM/FM M
" icon will ap-
" icon will turn off, con-
F
EATURES
V C : SSB/AM/FM M
[ VOX ] Button
[ VOX ] Knob
[ DELAY ] Knob
A :
The Anti-Trip setting sets the negative feedback of re-
ceiver audio to the microphone, to prevent receiver
audio from activating the transmitter (via the micro-
phone) can be adjusts via Menu item "040 GEnE
ANTIVOX."
VOX operation may be engaged on either Voice modes
(SSB/AM/FM) and on AFSK-based Data modes. Use
Menu item "137 tGEn VOX SEL" (the selections are
"niC ( MIC ) " and "dAtA ( DATA ) ").
[ MONI ] Button
[ MONI ] Knob
FT-2000 O M