Roadstar TRA-2350P User manual

TRA-2350P
INSTRUCTION MANUAL
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Table of Contents
SPECIAL FEATURES AND FUNCTIONS........................................2-3
COSMETIC AND FUNCTIONS GUIDELINE..................................4-8
POWER SUPPLY METHOD............................................................9-11
POWER ON/OFF UNIT......................................................................12
SELECTION BAND............................................................................13
SEACHING STATION....................................................................14-16
SPECIAL FUNCTION.........................................................................16
ANTENNAUSE………..................................................................17-19
TIME SETTING….......................................................................... 20-21
ALARM TIMER AND SLEEP TIMER.......................................... 22-25
OTHER FUNCTION .......................................................................26-28
INTRODUCTION FOR SPECIAL FEATURE................................29-30
SPECIFICATIONS................................................................................31

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SPECIAL FEATURES AND FUNCTIONS
Built in MCU, can control and display station frequency ,local/world time,
battery capacity and signal strength.
Built in 8 pieces standalone high quality ICs and MOSFETs and make this
unit features high sensitivity, strong interference-free, low background noise
and small distortion etc.
FM: 87.00-108.00MHz, MW: 520-1710 kHz, (10k step), 522-1620 kHz
(9k step) SW 1: 1711-10010kHz, SW 2: 9990-19999 kHz
SW 3: 20000-29999 kHz.
Install FM and SW external antenna jack to proceed with long distance
receiving and connect to local cable FM. MW sets exclusive 500 ohms
external air/ground connector, can improve the sensitivity of MW with
external antenna and ground wire.
FM accuracy 10kHz,AM accuracy 1kHz.
Install AM IF output, can use for extending other functions of AM broadcast,
for example: CW, SSB (single side band), DRM (digital radio mondial)
SSTV (slow scan TV) etc.
AM uses dual conversation PLL technology to get excellent anti-image
rejection, SW>40DB£MW > 60DB
Built in FET equalizer and mixer,MW built-in digital track tuning technology,

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SW built-in anti strong signal interference technology, so AM features very
good interference-free ability.
Special setting selectable wide/narrow IF band width, also adjust RF gain to
get best reception according to the strength or weak of broadcast signal to get
best reception.
Tuning knob can control tuning station frequency..
Double time buzzer, alarm, snooze, program sleep timefunction.
Button hint sound select, key lock feature
Listen to FM stereo station with headphone. The user can shut down FM stereo
to get higher Signal to Noise according to listening to station..
Built in L/R channel output connector, can take this unitas a tuner, connecting
to speaker amplifier to better sound quality.
Built in 5 inch speaker and BTL audio amplifier ,standalone tweeter, woofer
tuningknob to meet the user's different tone requirements.
The backlit LCD can select manually, temporary or permanent lighting two
different lighting methods, button backlight can be control by button
operation.
Multiple power supply method, external 230V AC and 6-9V DC, 4 x R20 size
and 4 x AA alkaline or rechargeable batteries, also features charging .

4

5
COSMETIC AND FUNCTIONS GUIDELINE
1 : Telescopic aerial,listening to FM/SW stations, extend and tilt telescopic aerial,
adjust it to a upright positions to obtain best reception.
2 :Snooze button£ in alarm mode, press this button to confirm the snooze mode in
five minutes, Press and hold down this button to confirm the button hint sound
on/off, if the button hint sound is on, press any buttons, the hint sound will be
heard.
3 :LCD screen, display time, frequency, battery capacity and signal strength etc.
4 :Night light button, fast press these buttons will light for 8 seconds, press and
hold
down the buttons for lighting all the time, press the button and the light become
dim when the light is on.
5 :Stop button of tuning knob £ when listening, press this button and tuning
knob cannot tune any frequency.
6 :Slow button of tuning knob £ when listening, press this button and tuning
knob can increase or decrease frequency at slow step (FM 10kHz, AM 1kHz)
7 :Fast button of tuning knob, when listening, press this button and tuning knob
can increase or decrease frequency at fast step (FM 100kHz,SW 5kHz,MW 9kHz
or 10kHz)
8 :Power/ Sleep button £ Power on or off the unit, setting sleep time .

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8 :Local/world time button, press this button to display local/world time, press
this
9: Button for 5 second sto display electronic time shifting. This unit has two time
format selection. The default is local time when the unit is reset.
10 :Key lock button, short, quick press this button to start this function,other
buttons are not valid except light button; press this button for a long time to
cancel..
11 :Key light switch ,set the switch ON and the button light will last for 8
seconds,this function is suitable for using at night.
12 :Local/DX button, suitable for receiving strength or weak signals in different
conditions.
13:Ext./Int. antenna selector, select external or internal antenna according to
different conditions.
14 :Hour button.when adjusting time, used for hour adjustment and increasing,
press and hold down for 5 seconds to confirm 12/24 hour format shift.
15 :Minute button, when adjusting time, used for minute adjustment and
increasing.
16 :Alarm set button, available in displaying timer A/B mode, can set alarm
buzzer, timing turn-on or cancel alarm setting.
17:Time button,press and hold down for a long time to confirm the time

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adjustment, press this button to display electronic clock when listening.
18 :Timer B button, press and hold down this button for a long time to confirm
alarm B adjustment. Press this button to display timer B when listening..
19 :Timer A button,press and hold down this button for a long time to confirm
alarm A adjustment. Press this button to display timer A when listening.
20 :Fast frequency increasing button, when receiving FM frequency at 1000kHz
step; receiving MW frequency at 100KHz step; Receiving SW frequency will
work as meter band.
21:Charger button, when the unit is off, press this button to confirm the charging.
22 :Reset hole, use for reset the unit operation.
23 :Tuning knob, use for time and frequency adjustment.
24 :Volume knob.
25 :Bass knob.
26 :Treble knob
27 :MW/SW gain control knob, adjust this knob to obtain best reception when
listening to MW/SW band..
28 :Stereo headphone jack ㄛlisten to FM stereo station
29 :MW/SW1/SW 2/SW 3 band selector, turn this selector to obtain the desired
band.
30 :FM/AM band switch, push this switch to select the desired FM mono, FM

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stereo,
AM wide and AM narrow.
31 :Handle
32 :FM/SW external antenna socket
33 :MW external antenna socket
34 :AM IF output socket
35 :Battery compartment
36 :Audio output connector
37 :Battery size selector, the battery compartment has two different
battery grooves,can put two different size batteries.
38 :External DC power socket (6-9V)
39 :External AC power socket(230V) .
LCD display indicator diagram
Sleep indicator
St e re o indic a t o r
Ke y lo c k ind ic a t o r
Ti mer A in di cator
Time r B in dic a t o r St at io n sig nal
st re ngt h ind ic at o r
Wo rld time in dic a t o r
Wo rld t ime
zo ne ind ic a t o r
Slo w,fa st ,
st o p in dic a t o r
Fre q ue nc y unit ind ic a to r
FM fre q ue nc y unit
MW/ SW fre q ue nc y unit
Time o r fre que nc y
indic a t o r
1 2 / 2 4 hr a m o r p m
fo rma t ind ic a t o r
Lo c a l t ime
in dic a t o r
M W b a nd
in dic a t o r
FM band
in dic a t o r
SW b a nd
in dic a t o r
Ba t te ry me t e r
in dic a t o r
T imer A
T imer B S te r e o
543210
Ex t . P o we r indic a t o r

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POWER SUPPLY METHOD
1.Battery
1.This unit can select D or AA size
battery to supply power, after putting
battery in the compartment (35) ,push
battery selector switch (37) to the
correct position.
2.This unit features battery meter and
automatically power off the unit when
the power is unsufficient. Putting new
battery, the screenwill display the
icon.
3. If the battery meter displays and flash,
it indicates the unit will power
off automatically after a few minutes
and need to change new battery.
4. Change new battery for 2 seconds,
the battery meter will become
icon