AOR AR-ONE User Manual download pdf (Page 23)

AR7030 OPERATING MANUAL PAGE 23

From the above illustration, pressing the soft-key

again would produce:

7-3 Dual VFO operation

The AR7030 can implement a scanning system between

the two VFOs termed DUAL VFO operation. This facility

is more versatile than the memory scanning (section 8)

because each VFO can have individual volume, delay and

hold characteristics. This can be especially useful for

automatically checking for activity on an amateur band

net frequency or for checking international search and

rescue frequencies such as 5.680 MHz USB while

generally listening to a completely different frequency and

mode.

Dual VFO operation is selected from the second section

of the VFO menu. Select

then and

to get to this menu.

First, an explanation of some terms used in the scanning

system:-

DELAY

Sets the

minimum

time that a VFO is

monitored before changing to the other VFO. It can be

set from half a second to 30 seconds by turning the spin-

wheel and each VFO can have a different delay. This

allows one VFO for general listening and the second to

be monitored briefly at regular intervals - similar to a priority

facility if the hold facility is used on the second VFO.

HOLD

The soft-key legend Hold is followed by a

bullet which indicates the current VFO’s state. When the

bullet is filled (hold enabled) the receiver will remain tuned

to that VFO provided the signal level is above the squelch

threshold (see section 6-12). When the signal level falls,

the delay time will be invoked before the other VFO is

monitored. If hold is disabled the receiver will monitor for

the delay time before changing to the other VFO. The

soft-key toggles hold mode on and off.

MUTE

The soft-key legend Mut is followed by a

bullet. If the bullet is filled (i.e. muting enabled) then audio

will be silenced when squelch is active (reversed

S displayed). The

soft-key toggles muting on

and off.

DUAL

The soft-key legend Dual is followed by a

bullet which indicates if Dual VFO mode is active. If the

bullet is filled (i.e. dual VFO enabled) then the receiver

will switch between VFOs when the delay and hold

conditions permit. The

soft-key toggles dual VFO

mode on and off - additionally dual VFO will be turned off

if menus other than the VFO menu or the S-meter are

selected on the display.

and soft-keys switch between the two

sections of the VFO menu.

Example: To set a broadcast frequency on one VFO for

general listening with the international search and rescue

frequency as a priority watch:-

1. Select the VFO menu - use

and then

the

soft-key.

2. Tune to a broadcast frequency for general listening,

for example 15070kHz, AM mode. Set the volume

as required. Turn the squelch off by rotating the spin-

wheel anti-clockwise until Sql 0% is displayed at the

top left of the LCD.

3. Select the other part of the VFO menu with ,

then set the delay to 15 seconds (or whatever you

want) by turning the spin-wheel. Make sure that the

Hold and Mut bullets are turned off (press the soft-

keys if necessary).

4. Return to the first section of the VFO menu with

and then select the other VFO with . Now tune

to the international search and rescue frequency

5680kHz, USB mode.

5. When there is no signal (only noise) increase the

squelch level with the spin-wheel until the reversed S

squelch indicator appears (if the indicator is already

displayed, first decrease and then increase the level).

This has set the squelch threshold.

6. Increase the volume slightly, so that when the

frequency becomes active it will be noticeable. Press

the

soft-key and then set the delay to 1 second

with the spin-wheel. Enable hold and mute with the

and soft keys so that both bullets

are filled.

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AOR AR-ONE User Manual Page 23

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