Vox Operation - Icom ic-718 Instruction Manual

5
RECEIVE AND TRANSMIT
ï Microphone compressor
The IC-718 has a built-in, low distortion mic compres-
sor circuit. This circuit increases your average talk
power in the SSB mode, and is especially useful for
DX'ing when the receiving station is having diffi culty
receiving your signal.
q Select USB or LSB mode.
w Select the mic gain display in the Quick Set mode.
• Hold down [SET] for 1 second to select the Quick Set
mode.
• Push [UP ∫]/[√ DN] one or more times to select "MIC
GAIN."
e Adjust the mic gain by rotating [DIAL].
• While speaking at your normal voice level, the ALC
meter should read about the middle of the ALC zone.
• Be sure the mic gain is in the range of 20 to 50.
r Push [SET] to exit the Quick Set mode.
t Push [COMP] to turn the mic compressor ON.
y Push [SET] one or more times to select the ALC
meter.
u While speaking into the microphone at your nor-
mal voice level, confi rm the ALC level so that the
ALC meter peak does not past the ALC zone.
• If the ALC meter peak past the ALC zone, readjust the
mic gain.
Note: If the ALC meter peaks above the ALC zone,
your transmitted voice may be distorted.
ï VOX operation
The VOX (Voice-operated Transmission) function tog-
gles between transmit and receive with your voice. This
function also allows you an opportunity to input log en-
tries into your computer and so on, while operating.
q Push [VOX] to turn the function ON.
w Select "VOX Gain" in the Quick Set mode.
• Hold down [SET] for 1 second to select the Quick Set
mode.
• Push [UP ∫]/[√ DN] one or more times to select "VOX
GAIN."
e While speaking at your normal voice level, adjust
[VOX GAIN] until the transceiver is transmitting.
r Select "VOX Delay" in the Quick Set mode.
• Push [UP ∫]/[√ DN] one or more times to select "VOX
Delay."
t While speaking at your normal voice level, adjust
[VOX DELAY] as desired.
y Select "ANTI-VOX" in the Quick Set mode.
• Push [UP ∫]/[√ DN] one or more times to select "AN
VOX."
u If the received audio from the speaker toggles the
transceiver to transmit, adjust the "ANTI-VOX" to
the point where it has no effect.
i Push [SET] to exit the the Quick Set mode.
28
[COMP] switch
ALC zone
Adjust [MIC GAIN] so that the ALC
meter reads within the ALC zone.
Y
[VOX] switch
Y