AOR AR-ONE User Manual download pdf (Page 20)

PAGE 20 AR7030 OPERATING MANUAL

To restore an S-meter display, press the button.

VFO-A and VFO-B and each mode may have different

filter selections in order to provide the greatest flexibility,

especially when moving between AM and SSB while

DXing using ECSS.

6-7 Passband Shift (PBS)

The AR7030 is fitted with a powerful system to help

eliminate the effects of adjacent channel interference by

shifting the passband of the IF filter upward or downward

in frequency. PBS operates in all modes except for NFM

and each mode retains its individual PBS setting. For

example, if you apply a PBS offset in AM mode it will not

be the same in other modes such as USB or LSB, which

adds versatility to the receiver and reduces the amount of

unnecessary button pressing when changing modes, when

DXing using ECSS (listening to AM with SSB modes) etc.

PBS may be used when receiving in Synchronous AM

mode so that USB, LSB or anything in between may be

selected, but avoid so much offset that the carrier cannot

get through the filter - don’t apply more than half of the

filter bandwidth.

PBS offset adjustment from the receiver’s front panel

requires the FILTER menu. If the S-meter is not displayed,

press the

button to return to the menu root. Press

the

button to choose the FILTER menu - the LCD

will display PBS above the spin-wheel, indicating this as

the spin-wheel function. The current PBS offset appears

in the top left corner of the LCD. A value of 0.0 indicates

no offset (the default setting).

Turn the spin-wheel to change the PBS offset. Press the

button to restore an S-meter display, .

When an IF filter bandwidth greater than 3.0 kHz is in

use, the PBS control shifts the passband in 100 Hz steps

(0.1 kHz). When a narrower filter is used the steps reduce

to 33 Hz (0.033 kHz). The PBS offset is displayed to the

nearest 100Hz step.

The infrared controller may also be used to check, modify

and cancel PBS settings at any time. Press the

key to review the current value, which will be displayed on

the top left of the LCD (for about 5 seconds). Once the

key has been used, the value of the PBS offset

may be increased or decreased using the

and

keys on the remote controller. To quickly reset PBS

to zero press

6-8 Audio tone controls

The AR7030 is equipped with separate treble and bass

tone controls, which are especially useful for reducing the

effects of whistles, spit and splatter on crowded bands,

and refine the audio quality when listening to good solid

transmissions. Tone control settings may be reviewed and

modified either from the infrared controller or from the

front panel of the receiver.

Adjusting the tone controls from the receiver’s front panel

requires the FILTER menu then the TONE menu. If the

S-meter is not displayed, press the

button to return

to the menu root. Press the

button and then the

soft-key to choose the TONE menu - the LCD will

show Treb above the spin-wheel, indicating this as the

spin-wheel function. Bass is displayed above the

button, and pressing this will reverse the Treb and Bass

designations, allowing either to be modified by turning the

spin-wheel. The current settings (in dB) are displayed in

the top left corner of the LCD. Values of +0 indicate a flat

response.

To restore an S-meter display, press the button.

The treble and bass controls will remain available on the

spin-wheel and

button.

The infrared controller may also be used to check and

modify the tone control settings at any time. Press the

or keys to review the current value, which

will be displayed on the top left of the LCD (for about 5

seconds). Once either of the tone keys has been used,

the appropriate setting may be increased or decreased

using the

and keys on the remote controller.

Note: VFO-A and VFO-B may contain different audio tone

settings.

6-9 RF Gain (Attenuator and Preamp)

The RF gain setting switches in attenuators or preamplifier

to suit the band conditions and aerial in use. Using the

attenuator (RF gain settings with negative values) can be

useful for reducing the level of unwanted strong signals -

the preamplifier (+10 setting) can help to extract weak

signals from the noise. The AR7030 has six settings of

RF gain:- +10dB (preamplifier on, the legend P is displayed

to the left of the S-meter), 0dB (no indication on the LCD,

this is the normal setting), -10dB (when the attenuator is

on an A is displayed to the left of the S-meter), -20dB,

-30db and -40dB. Each VFO may contain different settings

of RF gain.

RF gain settings are made in the RF / IF menu. If the

S-meter is not displayed, press the

button to return

to the menu root. Press the

button to choose the

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AOR AR-ONE User Manual Page 20

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