Basic Operations; Switching The Power On/Off; Adjusting The Volume; Switch Between Vfo And Channel Mode - Alinco DR-138 Instruction Manual

5

Basic Operations

The symbol stands for restricted or optional functions. Features and/
or operations may not be available to commercial-mode users unless
pre-programmed by the dealer.

Switching The Power On/Off

According to the option selected during
installation, press the
ignition key to ACC or ON position to power
on. Press the key for 1 seconds or turn the
ignition key to OFF position to turn off.

Adjusting The Volume

Turn the VOL knob clockwise to increase the
audio level, counterclockwise to decrease.
Press and hold MONI key to hear a white-noise to set the proper audio level.
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Switch between VFO and MEMORY mode
In standby, press key or Microphone's
key until appear , this indicates current
frequency in Memory mode. Repeat above
operation to switch between Frequency mode
(VFO) and Memory mode.
Adjusting Frequency/Channel THROUGH the dial
1. Under frequency (VFO) mode, you
can change the current frequency to
the desired one through dial; Turn
clockwise to increase frequency; turn
counterclockwise to decrease. Every
click will increase or decrease one step.
Press key, the KHz order digits will
switch or turn the
Frequency
Dial
be masked. In this status, turn Main Dial or Microphone [
1MHz step.
2. Under channel mode, you can change the current channel to
the desired one through Main Dial, clockwise turn to the forward
channel, anticlockwise turn to the backward channel. In relative
Operating mode, Microphone's [
function for adjusting frequency and channel.
PWR KEY
Available steps are 2.5K, 5K, 6.25k, 8.33K,10K, 12.5K, 20K, 25K and 30K.
ADJUSTING SQUELCH LEVEL
A squelch eliminates white-noise (the background noise when a signal is
not received). Higher level settings will keep the squelch "closed" more
tightly for quieter monitoring, but weak signals will not be heard. Lower
settings allow weaker signals to "open" the squelch but noise may also
cause it to open. By rotating the SQL knob, adjust the squelch level to
the desired level.

Receiving

Select the desired receiving frequency or browse channels to listen to
ongoing communications. The S-meter shows
relative signal strength between BUSY and
5th segment when the transceiver detects an
incoming signal.
Frequency

Transmitting

decrease increase
Press and hold
confirm the channel desired is not busy. Release
key to return standby status,Then press and hold [PTT] key to speak into
microphone.
/ ] key will increase or decrease frequency quickly by
key or press MIC's
/ ] key has the same
key to monitor for a while to
or press Mic's