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Icom IC-746 Instruction Manual

Icom IC-746
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19
4
USING DIFFERENT OPERATING MODES
Band keys
[MIC GAIN]
[SSB]
[RF PWR]
Microphone connector
ALC
Po
S
1
20 50
3 5 7 9 20 40 60
100%
ALC zone
[TRANSMIT]
[SSB]
[MENU] Tuning Dial
TCN
LH
0
SSBTXTone
Tone control menu
ı TRANSMITTING
Before transmitting, monitor your selected operating
frequency to make sure transmitting wont cause inter-
ference to other stations on the same frequency.
Connect the microphone to the [MIC] connector.
Push a band key to select the desired operating
band.
Push [SSB] to select LSB or USB.
Rotate [RF PWR] to select output power.
Push [TRANSMIT] or [PTT] to transmit.
Talk into the microphone at your normal voice level.
If necessary, adjust microphone gain with [MIC GAIN] so
that the ALC meter reading doesnt go outside the ALC
zone (see left).
Push [TRANSMIT] again or release [PTT] to return
to receive.
ADJUSTING TRANSMIT SIGNAL TONE
The tone of your transmitted signal can be adjusted to
suit your preference. In addition, the speech compres-
sor function (p. 46) can be used to increase your talk
power.
Push [SSB] to select LSB or USB.
Push [MENU] to select M1.
Push [F4] to display the tone control menu.
Push [MONI] to turn the monitor function on.
•“MONI appears.
While pushing [PTT] and speaking into the micro-
phone, rotate the tuning dial to vary the tone of your
transmitted signal.
Clockwise rotation increases the tone; counterclockwise
rotation decreases the tone.
Push [MENU] to return to M1.
Convenient functions for transmit
q Speech compressor (p. 46) The speech compressor compresses the transmitter
audio input to increase the average audio output level.
Therefore, talk power is increased. This function is ef-
fective for long distance communication or when prop-
agation conditions are poor.
w VOX (voice activated transmit) (p. 43) The VOX function starts transmission without pushing
the transmit switch or PTT switch when you speak into
the microphone; then, automatically returns to receive
when you stop speaking.
e Transmit quality monitor (p. 45) This function allows you to monitor the quality of your
transmitted signal.

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Icom IC-746 Specifications

General IconGeneral
ModeSSB, CW, RTTY, AM, FM
Receiver TypeDouble conversion superheterodyne
Antenna ConnectorSO-239
Voltage13.8 V DC ±15%
Impedance50 ohms
Output Power100 W (SSB, CW, FM, RTTY), 40 W (AM)
Current DrainTX: 20 A
SensitivityAM: 2 µV
SelectivityCW: 500 Hz (-6 dB)

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