Voice Communications (Ssb And Am); When Transmitting In Ssb Or Am Mode - Yaesu FTDX101D Operation Manual

Voice Communications (SSB and AM)

When transmitting in SSB or AM mode

The FTDX101D transmit audio circuit can be set to the optimum operating level by individually adjusting
the input and output gains of the microphone amplifier.
The AMC (Automatic Microphone Gain Control) regulates the microphone audio so that distortion does not oc-
cur, even if excessive audio is input.
1. Adjust Microphone gain
Touch the Meter Display on the right and then
touch "ALC" to select the ACL Meter.
Key TX and adjust the [MIC/SPEED] knob to set
the input level of the Microphone Amplifier to the
position where the ALC Meter needle does not
exceed the ALC zone on the audio peaks.
2. Adjust the AMC gain
Press the [MIC/SPEED] control to activate the
AMC function. While the AMC function is active,
the indicator on the left side of the [MIC/SPEED]
knob will light.
Touch the left side of the Meter Display, and then
touch "COMP" to select the COMP meter.
Activate the transmit and speak into the micro-
phone while adjusting the AMC level with the
[PROC/PITCH] control.
● Adjust the AMC to a point where the COMP
Meter deflection does not exceed "10 dB" on
the audio peaks.
Setup is completed.
Touch the [MONI] key listen to the quality of
your transmitted signal (page 32).
Normally, the AMC function is activated by
pressing the [MIC/SPEED] Control Knob.
The AMC function only works in SSB, AM,
DATA-L and DATA-U modes.
It does not work in other modes.
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Verify AMC Function operation
1. Press the [FUNC] key.
2. Select [OPERATION SETTING] → [TX AU-
DIO] → [PROC TYPE].
3. Confirm that [AMC] is selected.
4. Press the [FUNC] key to save the new set-
ting and exit the Setting Menu.
5. Press the [FUNC] key to exit to normal
operation.