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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
If the indicator on the left side of the [MIC/
SPEED] control is ON, press the [MIC/SPEED]
knob so that the indicator is OFF.
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] knob.
● 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 36).
The AMC function only works in SSB, AM,
DATA-L and DATA-U modes.
It does not work in other modes.
AMC/Compression level adjustment setting
The AMC function that automatically adjusts the
audio level so that distortion does not occur even
with excessive audio input, works in all modes.
The [PROC/PITCH] knob acts as a level control
knob for the AMC function.
1. Press the [FUNC] key.
2.
Select [OPERATION SETTING] → [TX AU
-
DIO] → [PROC LEVEL].
3. Select the operation for which the [PROC/
PITCH] control will adjust the level.
COMP: Press the [MIC/SPEED] knob to turn
the speech processor function ON
and then adjust the compression
level with the [PROC/PITCH] knob.
When the speech processor function
is turned OFF, the level of the AMC
function may be adjusted with the
[PROC/PITCH] knob.
AMC: The [PROC/PITCH] knob acts as
the level control knob for the AMC
function, regardless of whether the
speech processor function is ON or
OFF.
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.
Voice Communications (SSB and AM)
When transmitting in SSB or AM mode
The FTDX101 series transmit audio circuit can be set to the optimum operating level by individually ad-
justing 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.
