Yaesu FT-950, Руководство по эксплуатации, Страница: 68 / 132

Page 66 FT-950 O
PERATING
M
ANUAL
VOX
(
SSB/AM/FM M
ODES
:
A
UTOMATIC
TX/RX S
WITCHING USING
V
OICE
C
ONTROL
)
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.
1. Press the [ VOX
] button to activate the VOX circuitry.
The LED inside the [ VOX
] button glows red.
2. Without pressing the PTT switch, speak into the mi-
crophone in a normal voice level. When you start speak-
ing, the transmitter should be activated automatically.
When you finish speaking, the transceiver should re-
turn to the receive mode (after a short delay).
3. To cancel VOX and return to PTT operation, press the
[
VOX
] button again. The LED inside the [
VOX
] but-
ton will disappear, signifying that the VOX circuitry
has been turned off.
A
DVICE
:
ˆ The VOX Gain may be adjusted to prevent accidental
transmitter activation in a noisy environment. To ad-
just the VOX Gain:
€ Press the [ VOX
] button to activate the VOX cir-
cuitry, if necessary.
€
Press the [
MENU
] button momentarily to engage
the Menu mode.
€ Rotate the [ SELECT
] knob and select Menu item
“
115 TGEN V GAIN 115 TGEN V GAIN 115 TGEN V GAIN 115 TGEN V GAIN 115 TGEN V GAIN
”.
A
DVICE
:
Press the [ SELECT
] knob to toggle the Menu item
display between “
115 TGEN 115 TGEN 115 TGEN 115 TGEN 115 TGEN
” and “
V GAIN V GAIN V GAIN V GAIN V GAIN
”.
€ While speaking into the microphone, rotate the
[
CLAR/VFO-B
] knob to the point where the trans-
mitter is quickly activated by your voice, without
background noise causing the transmitter to acti-
vate.
€ When you satisfied with the setting, press and hold
in the [ MENU
] button for one second to save the
new setting and exit to normal operation.
ˆ 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:
€ Press the [ VOX
] button to activate the VOX cir-
cuitry, if necessary.
€ Press the [ MENU
] button to engage the Menu.
€ Rotate the [ SELECT
]] knob and select Menu item
“
116 TGEN VOX DLY 116 TGEN VOX DLY
116 TGEN VOX DLY 116 TGEN VOX DLY
116 TGEN VOX DLY
”.
A
DVICE
:
Press the [ SELECT
] knob momentarily to toggle
the Menu item display between “
116 TGEN 116 TGEN
116 TGEN 116 TGEN
116 TGEN
” and
“
VOX DLY VOX DLY VOX DLY VOX DLY VOX DLY
”.
€ Rotate the [ CLAR/VFO-B
] knob while saying a
brief syllable like “Ah” and listening to the hang
time for the desired delay.
€ When your adjustments are complete, press and
hold in the [ MENU
] button for one second to save
the new setting and exit to normal operation.
ˆ
The Anti-Trip setting adjusts the level of negative re-
ceiver audio feedback to the microphone, to prevent
receiver audio from activating the transmitter (via the
microphone). This setting can also be adjusted via
Menu item “
117 TGEN ANTIVOX 117 TGEN ANTIVOX 117 TGEN ANTIVOX 117 TGEN ANTIVOX 117 TGEN ANTIVOX
”.
ˆ VOX operation may be engaged on either Voice modes
(SSB/AM/FM) or on AFSK-based Data modes. Use
Menu item “
114 TGEN VOX SEL 114 TGEN VOX SEL 114 TGEN VOX SEL 114 TGEN VOX SEL 114 TGEN VOX SEL
” (the selections are
“
niC niC
niC niC
niC
(MIC)” and “
dAtA dAtA
dAtA dAtA
dAtA
(DATA)”).
T
RANSMITTER
C
ONVENIENCE
F
EATURES
[VOX] Button
[CLAR/VFO-B] Knob [MENU] Button
[SELECT] Knob
[CLAR/VFO-B] Knob [MENU] Button
[SELECT] Knob