Other Functions - Icom IC-M804 Instruction Manual

■ Other functions

Emergency FREQ channel
Select the Distress Voice Frequency. When this
channel is selected, the Voice Frequency of a DSC
call can be monitored without receiving or transmitting
a DSC call.
1. Push [◄] or [►] until
Emergency FREQ
in the Software Key area.
2. Push
Emergency FREQ
• The channel is changed to an Emergency FREQ
channel and Emergency
area.
3. Rotate [CH/GRP] or push [▲] or [▼] to select a
channel.
Noise Blanker function
The Noise Blanker function reduces pulse-type noises
that come from engine ignitions.
However, if the received strong signals are distorted,
adjust the Noise Blanker level or turn OFF the function.
1. Push [◄] or [►] until
Software Key area.
to turn the function ON or OFF.
2. Push
NB
L When the function is ON, "NB" is displayed in the
Status area.
Noise Blanker Level
When the Noise Blanker function is ON, adjust the
Noise Blanker level to reduce various pulse-type
noises.
Set to between 1 and 10.
1. Push [◄] or [►] until
NB Level
Software Key area.
2. Push .
NB Level
• The NB level setting window is displayed.
3. Push [◄]/[▼] or [▲]/[►] to adjust the Noise
Blanker level.
is displayed
.
is displayed in the Channel
is displayed in the
NB
is displayed in the
OTHER FUNCTIONS AND OPERATIONS
Squelch function
The Squelch function mutes unwanted signals such
as noise or unmodulated beat signals. This function
enables quiet standby.
However, if you need to receive weak signals, adjust
the squelch level, or turn OFF the function.
1. Push [◄] or [►] until
Software Key area.
to turn the function ON or OFF.
2. Push
SQL
L When the function is ON, "SQL" is displayed in the
Status area.
S-meter Squelch Level
When the Squelch function is ON, only signals
stronger than this set level are received.
Set to between 0 (open) and 100 (tight).
1. Push [◄] or [►] until
S-SQL Level
the Software Key area.
2. Push
S-SQL Level
• The S-SQL level setting window is displayed.
3. Push [◄]/[▼] or [▲]/[►] to adjust the squelch
level.
RF gain Level
To receive weak signals, you can set the minimum RF
(Radio Frequency) gain level needed.
Set to between 0 and 9.
1. Push [◄] or [►] until
RF Gain
Software Key area.
2. Push .
RF Gain
• The RF gain level setting window is displayed.
3. Push [◄]/[▼] or [▲]/[►] to adjust the RF gain level.
Clarity Control function
With the Clarity Control function, you can slightly shift
the receive frequency without changing the operating
transmit frequency to fi nely tune it. When the function
is ON, adjust the receive frequency.
Set to between -150 Hz and +150 Hz (in 10 Hz steps).
1. Push [◄] or [►] until
Clarity
Software Key area.
to turn the function ON.
2. Push
Clarity
• is displayed in the Channel area.
3. Push [▲] or [▼] to adjust the receive frequency.
► Continued on the next page.
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SQL
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