DX-394 Communications Receiver
(200-0224) Receiver Operation Faxback Doc. # 31585
1. Turn VOLUME fully counterclockwise and RF GAIN fully clockwise before
you turn on the receiver.
2. Select the operation mode - STAND BY, AM, LSB, USB, CW1, or CW2 (see
"Using the Mode Control", below).
3. Press POWER to turn on the receiver.
NOTE: If the clock display is flashing, set the time (see "Setting
the Clocks", on Faxback Doc. # 31584).
4. Press BAND until the desired band LW, MW, or SW appears on the display
(see "Selecting the Band", below).
5. Tune to the desired station (see "Tuning to a Station", below).
6. Adjust VOLUME as desired.
7. Press POWER again to turn off the receiver.
USING THE MODE CONTROL
The MODE switch setting determines the type of signal that your receiver
receives. For standard broadcast and international short wave signals,
use the AM position. For Morse code, use CW1 or CW2. For SSB signals,
use LSB or USN position. To help you decide whether to use USB (upper
sideband) or LSB (lower sideband), see the following chart.
This chart shows the normal sideband mode used for the Ham bands.
(When receiving SSB on other bands, try both USB and LSB until you are
able to identify the signal.)
Meters Frequency (in MHz) Sideband Used
160 1.8 to 2.0 Lower
80 3.5 to 4.0 Lower
40 7.0 to 7.3 Lower
20 14.0 to 14.35 Upper
17 18.068 to 18.168 Upper
15 21.0 to 21.45 Upper
12 24.89 to 24.99 Upper
10 28.0 to 29.7 Upper
NOTES: If you tune through SSB signals while in the AM mode, you hear only
a fluttering sound. Switch to the LSB or USB mode.
If you tune through AM signals while using the LSB or USB mode, you
hear a very annoying background tone, which varies with the setting
of the tuning controls. If this happens, switch to the AM mode.
Setting MODE to the STAND BY position prevents you from changing
the main tuning knob and all buttons, except POWER. This position
also turns off the sound.
SELECTING THE BAND
To select the long wave (LW), medium wave (MW), or short wave (SW) band,
press BAND until the desired band appears on the display.
Selecting the International Radio Frequency Band
1. Press METER to display the current meter band.
2. Press METER again if you want to change the meter band. The meter
band flashes for 10 seconds.
3. While the meter band flashes, press the desired meter band key. For
example, to select the 90 meter band, press 90m.
SETTING A LIMIT TUNING RANGE
You can set a frequency range so you can tune to frequencies between lower
and upper limits.
1. Press LIMIT. LIMIT appears on the display.
2. Press PGM. /\ flashes for about 10 seconds.
3. Enter the lower limit of the frequency range including the decimal
point.
To set 150 kHz, enter 150.
To set 1 MHz, enter 1000 or 1.
To set 10 MHz, enter 10000 or 10.
NOTES: If you try to enter an invalid frequency (100, for example),
ERROR appears on the display. Press CLEAR or wait 5 seconds
until ERROR disappears from the display.
You cannot use the main tuning knob to set a limit tuning
range.
4. Press LIMIT. \/ flashes for about 10 seconds.
5. Enter the upper limit of the frequency range including the decimal
point.
6. Press ENT.
7. Press /\ or \/ to search through the frequencies in the selected band.
NOTES: If you make a mistake in Step 3 or 5, press CLEAR to erase the last
digit.
If you wait more than 10 seconds to press a key. You must begin
again at Step 2.
To return to the previous mode, press LIMIT until LIMIT disappears
from the display. The limit tuning range is stored in memory until
you set a new range.
TUNING TO A STATION
You can tune to a desired broadcast station using the manual, direct
access, search or memory tuning methods. Use the lower keypad or main
tuning knob to tune broadcasts.
Manual Tuning
To manually tune to a frequency, repeatedly press /\ or \/ or rotate the
main tuning knob until the display shows the desired frequency.
Direct Access Tuning
1. Press FREQ. The frequency display flashes for about 10 seconds.
2. While the frequency display flashes, press the number keys, including
the decimal key, to select the desired station's frequency.
3. Press ENT.
NOTES: If you make a mistake, press CLEAR to erase the last digit.
If you do not press a key for more than 10 seconds, the display
stops flashing. Start again from Step 1.
If you enter a invalid frequency, ERROR appears on the display.
Press CLEAR or wait 5 seconds until ERROR disappears from the
display.
Your receiver automatically rounds down the entered frequency to
the nearest valid frequency. For example, if you try to enter a
frequency of 478 in LW, your receiver accepts it as 470 (when the
frequency step is set to 10 kHz - see "Setting the Frequency Step",
below).
Search Tuning
To automatically tune up or down to the next frequency in the selected LW,
MW, SW band, 13 international broadcast band (meter), or limit frequency
band, press and hold down /\ or \/ for about 2 seconds. The receiver
searches up or down in the selected band and tunes to the first frequency
it finds with a strong signal.
NOTES: To tune to stations with weaker signals, use one of the manual
tuning methods.
If the RF GAIN is set fully clockwise, the receiver might not
search up or down when you press /\ or \/. Turn the RF GAIN
control counterclockwise.
Press /\ or \/ for about 2 seconds to restart the search.
Memory Tuning
For easy selection, you can store the frequencies of your favorite stations
into memory channels. You can store up to 160 frequencies - 10 frequencies
each in the LW, MW, SW bands, and 10 in each of the meter bands.
Follow these steps to store a frequency into memory.
1. Select the band or meter.
2. Use direct access or manual tuning to tune to the frequency you want
to store.
NOTE: When you store frequencies in the SW band and the meter bands,
the frequencies are stored in either the SW band's channel
memory or the meter bands' channel memory depending on the
tuning method. When a frequency (for example: 3.200000 MHz,
90m) is tuned by direct tuning (using FREQ), the frequency is
stored in the SW band's channel memory. When the same frequency
is tuned by manual tuning (using the tuning control or s or t),
the frequency is stored in the 90m band's channel memory.
3. Press PGM.
4. While PGM CH flashes, enter a memory channel number from 1-10 (press
0 for 10).
5. While PGM CH and the memory channel number flash, press ENT to store
the frequency.
NOTE: If you wait more than 10 seconds to press ENT, you must begin
again from Step 3.
6. To store more frequencies in the same band, repeat Steps 2-5. To store
a frequency from another band, repeat Steps 1-5.
To tune to the desired memory channel, select the band and then press the
channel number.
USING A MONITOR MEMORY
The receiver's monitor memory is a temporary storage area where you can
store a frequency while you decide whether or not to save it in a channel.
1. Press MON while the desired frequency is displayed. MON and any
previously stored frequency appear on the display.
2. Press ENT. The new frequency replaces the old one in the monitor
memory.
To listen to the monitor memory, press MON.
USING THE RF GAIN CONTROL
When you receive an extremely strong signal, turn RF GAIN to vary the
overall volume, instead of using the VOLUME control.
USING THE FINE TUNE CONTROL
To receive SSB clearly, adjust FINE TUNE very slowly and carefully until
the voice sounds normal. When improperly tuned, voices have a low guttural
sound or sound like "Donald Duck." SSB signal tuning takes patience and
practice.
If you are listening to a Morse code signal, adjust FINE TUNE for the pitch
of tone which best suits you.
SETTING THE FREQUENCY STEP
Station frequencies are generally assigned in standard tuning increments
to reduce broadcast interference. Your receiver is preset to change and
search for frequencies in the standard, conventional increments. However,
your receiver has the capability to change the frequency step for easier,
incremental tuning, or increased search capability. The following table
shows the default tuning steps.
Band Tuning Increment
LW 10 kHz
MW 10 kHz (See "Changing the MW
Tuning Increment.")
SW 5 kHz
HAM 1 kHz
Press STEP /\ or STEP \/ to select your desired tuning step. As you press
STEP /\ or STEP \/ , the frequency step appears under STEP (kHz) on the
display in this order: 0.1, 1, 5, 10 (9).
CHANGING THE MW TUNING INCREMENT
In the United States, the MW band frequencies step in 10 kHz increments.
In some countries, the MW band frequencies step in 9 kHz increments. Your
receiver has the capability to shift between these two steps increments.
Here is how to change the step.
1. Press POWER to turn off the receiver.
2. While pressing STEP /\ or STEP \/, press POWER.
The 10 kHz step is changed to 9 kHz or vice versa. If you want to change
or back, repeat the procedure.
USING THE DIMMER BUTTON
To light up the display, press the DIMMER button. To turn off the
lightning, press the DIMMER button again.
USING THE LOCK BUTTON
To prevent accidental frequency changes, press the LOCK button. This
prevents you from changing the main tuning knob and all buttons, except
POWER and LOCK. To unlock the controls, press the LOCK button again.
USING THE ATT SWITCH
To reduce interference or noise caused by signals from a strong local
broadcaster, you can reduce the receiver's sensitivity by setting the ATT
(attenuate) switch on the back of the receiver.
Switch ATT to 20dB to reduce the receiver's sensitivity, or 0dB for normal
sensitivity.
NOTES: If you switch ATT to 20dB, your receiver might not receive weak
signals.
The ATT switch affects only the antenna connected to the ANT LO-Z
terminal.
(EB 3/29/96)
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