Yaesu FT DX 9000MP CONTEST - DATA MANAGEMENT..., Руководство по эксплуатации

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Page 101 FT
DX
9000MP O
PERATION
M
ANUAL
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T T T T T
RANSMITTER RANSMITTER
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CCESSORIES CCESSORIES
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VOX: A
UTOMATIC
TX/RX S
WITCHING USING
V
OICE
C
ONTROL
- SSB/AM/FM M
ODES
-
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 [
DELAY
] and [
VOX
] controls fully
counter-clockwise (to the left).
2. Press the [ VOX
] switch 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
transmitter.
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:
Do not advance the setting of the [ VOX
] control 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 paus-
ing, so as to set the desired hang time. Clockwise ro-
tation of the [
DELAY
] control will increase the hang
time.
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The Sub band (VFO-B) frequency display will show
the hang time of the VOX circuit for 3 seconds when-
ever the outer [
DELAY
] knob is turned.
You may disable this feature (displaying the hang time
of the VOX circuit) via Menu item “
DISPLAY 022
LEVEL INDICATOR .” See page 148 for details.
5. To exit from VOX operation, press the [ VOX
] switch
once more. We recommend doing this if you are go-
ing to leave your station, to prevent inadvertent acti-
vation of the VOX system by a ringing nearby tele-
phone, speaker audio from a TV, etc.
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VOX operation may be engaged on either Voice
modes (SSB/AM/FM) and on AFSK-based Data
modes. Use Menu item “
TX GNRL 178 VOX
SELECT
” (the selections are “MIC” and
“DATA”).
[DELAY] Knob / [VOX] Knob
[VOX] Switch
VDD TEMP SWR BIAS