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Page 66 FT-950 OPERATING MANUAL
VOX
(
SSB/AM/FM MODES: AUTOMATIC TX/RX SWITCHING USING VOICE CONTROL
)
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.
ADVICE:
The VOX Gain may be adjusted to prevent accidental
transmitter activation in a noisy environment. To ad-
just the VOX Gain:
1) Press the
[
VOX
]
button to activate the VOX cir-
cuitry, if necessary.
2) Press the
[
MENU
]
button momentarily to engage
the Menu mode.
3) Rotate the
[
SELECT
]
knob and select Menu item
115 TGEN V GAIN”.
ADVICE:
Press the
[
SELECT
]
knob to toggle the Menu item
display between “115 TGEN” and “V GAIN”.
4) 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.
5) 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.
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) Press the
[
VOX
]
button to activate the VOX cir-
cuitry, if necessary.
2) Press the
[
MENU
]
button to engage the Menu.
3) Rotate the
[
SELECT
]
] knob and select Menu item
116 TGEN VOX DLY”.
ADVICE:
Press the
[
SELECT
]
knob momentarily to toggle
the Menu item display between “116 TGEN” and
VOX DLY”.
4) Rotate the
[
CLAR/VFO-B
]
knob while saying a
brief syllable like “Ah” and listening to the hang
time for the desired delay.
5) 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.
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”.
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” (the selections are
niC (MIC)” and “dAtA (DATA)”).
TRANSMITTER CONVENIENCE FEATURES
[
VOX
]
Button
[
CLAR/VFO-B
]
Knob
[
MENU
]
Button
[
SELECT
]
Knob
[
CLAR/VFO-B
]
Knob
[
MENU
]
Button
[
SELECT
]
Knob
68


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