Bedienungsanleitung Sangean ATS-909X2 (Seite 14 von 19) (Englisch)

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There are 3 different bandwidth settings available for the

AIR and FM bands, while the SW, MW and LW bands

each have 5 different bandwidth settings:

Bandwidth Indicator FM MW /

LW SW AIR

WIDEST 110kHz 6kHz 4kHz 6kHz

WIDE - 4kHz 3kHz -

NORM 85kHz 3kHz 2.5kHz 4kHz

NARROW - 2.5kHz 1.8kHz -

NARROWEST 65kHz 1.8kHz 1kHz 2kHz

To use automatic bandwidth control, place the Bandwidth

Control switch (13) in the AUTO position. The bandwidth

will now automatically be adjusted to the best setting

according to the signal to noise ratio and the radio will

keep monitoring the signal to noise ratio every 300 ms

and adjust the bandwidth if needed.

It is also possible to manually adjust the bandwidth. To do

this, follow these steps:

1. Turn on the radio using the Power button (10).

2. Select the desired waveband by pressing the

corresponding button.

3. Place the Bandwidth Control switch (13) in the manual

position.

4. Press the bandwidth button (26) repeatedly to select

the desired bandwidth.

The Bandwidth indicator (Ad) on the display shows the

currently selected bandwidth.

NOTE

The bandwidth cannot be set when using the LSB or

USB band. Pressing the Bandwidth Control button (26)

has no effect in this case.

PERFORMING A PAGE SCAN – AIR

ONLY

When using the AIR band, the AIR button (23) can be

used to perform a page scan. When performing a page

scan, the ATS-909X2 will tune to all preset stations that

are saved on the current page and stop when it finds a

station on which a signal is being received. If the signal

is no longer received for the duration of the scan delay,

the radio will continue scanning the other presets on the

current page (see chapter 6 "USING THE MENU" for

more information about setting the page scan delay).

To perform a page scan, follow these steps:

1. Turn on the radio using the Power button (10).

2. Select the AIR band using the AIR button (23).

3. Select the desired page using the Page button (27).

4. Press and hold the AIR button (23).

5. The radio will now perform a page scan, scanning all

presets on the current page until it finds a preset that is

broadcasting a signal.

6. If no suitable station can be found the radio will keep

scanning the selected page.

7. To cancel the page scan, press the AIR button (23)

once again.

NOTE

The common airband is normally used for short-term

transmission. The page scan feature can monitor 9

preset stations at the same time. If a radio signal is

being received on a certain preset, the radio will stop

scanning and tune to that preset. When the radio no

longer receives a signal on this frequency, it will wait

0.5 second to 2 seconds (depending on the set scan

delay) and, if no signal is being received anymore, then

continue the page scan.

SETTING THE SQUELCH LEVEL

Background hiss or static noise is present to some

degree at every location. This is a normal phenomenon.

The Squelch button (8) can be used to set the squelch

level above the background noise level in order to skip

unwanted stations or interference when automatically

scanning, making it easier to find voice transmissions

from stronger stations.

It is recommended to keep the squelch level as low

as possible (to a level just before static noise can be

constantly heard). This way, signals that may be weak

can still be heard. If the squelch level is set too high, weak

voice transmissions may be suppressed as well.

The squelch level can be adjusted using the following

steps:

1. Turn on the radio using the Power button (10).

2. Press the Squelch button (8).

The Squelch indicator (N) will now be shown on the

display and 'SQUELCH' is blinking in the Text display

(U).

3. Rotate the Tuning Control knob (16) clockwise to

increase the squelch level or counterclockwise to

decrease the squelch level.

When the receiving RF level is lower than the set

squelch level, the Squelch indicator (N) will be shown

on the display of the radio.

SETTING THE RF GAIN

The AM RF Gain jog dial (40) can be used to enhance the

gain of the RF amplifier while listening to the AM band.

A higher gain level helps receiving signals from further

away, but can also saturate the RF amplifier when the

radio is situated near a strong electric field, causing it to

no longer receive any normal signal. In this case, the RF

gain should be lowered to avoid such saturation effects.

In general, it is recommended to place the AM RF

Gain jog dial (40) in the maximum position for the best

reception.

6. USING THE MENU

The menu of the ATS-909X2 can be accessed by

pressing and holding the Menu button (29) while the

radio is powered on or off. After accessing the menu, the

Rotary Tuning knob (16) can be used to browse through

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