Changing frequency by channel step, Changing frequency by 1 mhz step, Basic operations – Alinco DR-635 User Manual

Page 17: Turning the unit on and off, Switching the main band, Audio volume level setting, Squelch level setting, Squelch level setting on the sub band, Squelch level, Volume low high volume

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15

Basic Operations

Turning the unit on and off

By pressing the PWR key the power is turned on. By pressing
the PWR key again, the power is turned off. Refer page 9 for
external power control.

Switching the MAIN band

Pressing the BAND key will switch the MAIN band between
the VHF band and the UHF band.
The MAIN band allows transmission and reception. The SUB
band only allows reception. The MAIN band and the SUB
band can receive simultaneously.

Audio Volume level setting

The volume of the MAIN band is adjusted by the VOL knob
on the MAIN side, and the volume of the SUB band by the
VOL knob on the SUB side.
Rotate the VOL knob clockwise to increase the audio level,
counterclockwise to decrease.

SQL

Squelch level

MHz

PWR

SUB

VOL

SUB

RX

D

SHIFT

LOCK

PACKET DIGITAL

TS/DCS

H/L

SQL

FUNC

SET

PWR key

MAIN side VOL knob

SUB side VOL knob

low

high

BAND

CALL

MHz

VV/UU

V/M

PWR

MAIN

VOL

MW

MAIN

TX/RX

SUB

VOL

SUB

RX

RX BAND

SHIFTET

DIGITAL

SQL

FUNC

SET

Volume

low

high

Volume

BAND

CALL

MHz

VV/UU

V/M

MAIN

VOL

MW

MAIN

TX/RX

RX BAND

SHIFT

LOCK

PACK

TS/DCS

H/L

BAND Key

Squelch level setting on the SUB band

To set the squelch level on the SUB band, press the BAND key while [SQL] appears.

1.

Press SQL Key.
[SQL] icon appears on the display and the
squelch level will be shown on it.

2.

By rotating the main dial or by using the UP/
DOWN keys on the microphone, adjust the
squelch level to the desired level.

3.

When completing the setting, press PTT or any
key on the front panel other than the Band key.
Then the display will return to the original sta-
tus; or if there are no operations for 5 seconds,
the unit will automatically complete the setting
and the display will return to the original status.

NOTE:

• 21 levels, between (00) and (20), are available for the squelch level.
(Higher level settings will make the squelch more difficult to open.)
• The default level is 02.

Squelch level setting

Adjust threshold level of the squelch. A squelch eliminates the background noise when a signal is
not received. To set squelch level on the MAIN band side,

IMPORTANT: On the SUB side, no settings other than the fre-

quency and S meter are indicated.

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