11
5
POWER
Basic Operations
Switching The Power On/Off
Power On
Input Frequency THROUGH Microphone number key
Power Off
Adjusting The Volume
Switch between VFO and MEMORY MODE
Setting Frequency
Setting CHANNEL
Press
key to turn on. Appears "ALINCO DR-
638" then displays current frequency or channel.
Press key for over 0.5 Second to turn off.
In VFO mode, turn the dial clockwise to increase
frequency; Counterclockwise to decrease. Every
click will increase or decrease frequency by one
channel-step. To select MAIN and SUB band,
press the dial. Press
key then turn the dial
or
[UP/DOWN]
keys to change the frequency by
1MHz step.
In VFO mode, you can input the frequency by the numerical keys.
Out-of-the-band frequnecies are automatically rejected.
For example, to input 145.320MHz, press 1,4,5,3,2,0 sucsessively.
When completed, a decimal point appears at the MHz order.
In memory mode, you can select the frequency by turning the dial.
Turn clockwise to increase, counterclockwise to decrease the channel
numbers. To switch the MAIN/SUB band, press the dial.
While a memory channel is shown in SUB band, [ ]icon appears.
Rotate the [VOL] knob of selected band clockwise
to increase the audio level, counterclockwise to
decrease.
Rotate the SQL ring counterclockwise to hear the white noise to set the audio
level properly.
In standby, press
or
key to switch between VFO(Frequency)
Important: The explanations herein are based on manufacturer's default
setting.
SQUELCH LEVEL SETTING
Rotate the [SQL] ring of selected band clockwise
to increase the squelch level, counterclockwise to
decrease.
A noise is heard at the minimum setting.
Squelch is to cut the white-noise in stand-by state.
Setting it too high may risk missing weaker signals but lower setting may
open squelch often hearing more noise. You should set the levels of both
MAIN and SUB bands before start operating.
The microphone
[UP/DOWN]
key also able to adjust frequency.
Press
[UP/DOWN]
key will increase(decrease) the frequency by one step
size. Hold
[UP/DOWN]
key will adjust the frequency continuously.
When the Band lockout function is on, the operating ranges will be limited.
and Memory mode. When in memory mode,
the memory channel number appears on the
left side of memory frequency.