Icom IC-751A Instruction Manual page 30

(2) SSB TRANSMITTING
NOTE: Listen carefully before transmitting to
be sure your transmission will not
interfere with any other communica-
tions.
•VOX OPERATION
•SPEECH COMPRESSOR OPERATION
•USING THE MONITOR FUNCTION
6-4 CW OPERATION
(1) CW RECEIVING
ID!lmlBII
AM
ml
CW
mil
SSB
18!1
RTTYIJ'.m
D
ICJI ICJI
11 11
ICJI
4) Adjust the AF GAIN CONTROL for the desired volume.
5) Rotate the TUNING CONTROL and search for a signal. Tune
across the signal to peak the meter needle while listening for the
most intelligible audio.
1) Select the transmit mode using either the T/R SWITCH or the
PTTSWITCH.
2) Set the METER SWITCH to the Po position. Speak into the
microphone in a normal voice. The meter movement indicates
that a signal is being transmitted.
3) The TRANSMIT INDICATOR lights whenever the IC-751A is
placed in the transmit mode, however an RF signal is only trans-
mitted when the selected operating frequency is within an
Amateur band.
4) Set the METER SWITCH to the ALC position, and adjust the
MIC GAIN for a meter reading within the ALC zone on voice
peaks.
Refer to SECTION 7 - 1.
Refer to SECTION 7 - 2.
The transmitted signal cari be monitored when osing the SSB mode
if desired. This is useful to check the audio quality of your output,
particularly important when using the speech compressor.
1) Set the MONITOR/MARKER SWITCH on the top panel to
MONITOR.
2) Adjust the MONITOR LEVEL CONTROL on the top panel to a
comfortable audio level.
lt is preferable to use headphones to prevent "howling" caused
by feedback from the speaker to the microphone.
For CW reception, select the CW or CW NARROW mode. Audio
output from the speaker is muted when the CW NARROW mode is
selected with no optional narrow filter installed. Other switches and
controls are set the same as for SSB reception.
1) Push the POWER SWITCH to turn ON the power.
2) Push the CW SWITCH.
3) Set the desired operating frequency.
4) Adjust the AF GAIN CONTROL for a suitable volume.
5) When the FIL TER SWITCH is pushed IN, the passband tuning
system may be used to set the receiver selectivity to 700Hz by
tuning the PBT CONTROL to the maximum counterclockwise or
clockwise position, or to 2.3kHz by placing the control at the
detent. Additionally, the notch filter eliminates specific inter-
ference at discrete frequencies within the passband of the receiver.
Refer to SECTIONS 7 - 7 and 7 - 8 for passband and notch filter
operation.
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