Roberts Radio Portable Radio R876 User Guide

R876  
Multi-band digital preset stereo world radio  
Please read this manual before use  
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Features  
! Continuous gap free tuning of LW, MW and SW  
! SW metre buttons offer instant selection of any de-  
bands  
sired SW band.  
! Large easy to read Liquid crystal display (LCD) show-  
ing station frequency, dual time, memory location and  
function status.  
! Dual Alarm Feature allows presetting of two alarm  
wake-up times.  
! ATS (Auto Tuning System) which will automatically  
scan LW, MW, and SW frequencies selecting pre-  
sets based on station signal strength.  
! Direct frequency entry by keypad allowing instant ac-  
cess to any station.  
! Fifty four memory presets offer instant access to your  
! Adjustable sleep timer allows you to fall asleep to  
favourite stations on LW, MW, FM and SW.  
music.  
! Dual time facility allows you to preset your local time  
or UTC time, or any two time zones with instant re-  
call.  
! Scanning circuit allows you to search for active sta-  
tions.  
! Cancel button allows you to instantly change incor-  
rect information keyed into the microprocessor.  
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Control locations  
1. Power on/off and sleep button.  
2. Fine tune button.  
11. LW band, LW ATS and radio standby button.  
12. MW band, MW ATS and HWS standby button.  
3. Manual/auto scan tuning buttons.  
4. Enter button.  
13. SW band, SW metre band and count down timer  
button.  
14. Liquid crystal display.  
15. Light button (on top).  
16. Tuning indicator.  
5. Memory and time set button.  
6. Frequency select button.  
7. Cancel button.  
8. Decimal point and zero set button.  
9. 0 digit, 0 memory and SW metre button.  
10. FM band, FM ATS and real/dual time button.  
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10  
11  
12 13 14 15  
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2
3
4
5
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9
8
7
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17. Earphone socket.  
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18. DC input socket.  
19. AM external aerial socket.  
20. FM Mono/stereo and AM DX/Local switch.  
21. Telescopic aerial.  
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20  
17  
18  
24  
22  
22. Volume control.  
23. Lock switch.  
24. Folding stand.  
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25. Reset button.  
26. 9/10kHz MW step switch.  
27. Battery compartment.  
28. Battery cover.  
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27  
28  
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Display information  
1. Waveband indicators.  
2. Time set status.  
17. Count down timer indicator.  
18. Memory preset, battery strength and ATS  
scanning indicator.  
3. Zero second set indication.  
4. Memory indicator.  
19. Fine tune indicator.  
5. SW Memory 10-18 indicator.  
6. Sleep function indicator.  
7. Lock switch indicator.  
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2
3
10  
6
7
8
9
8. FM stereo indicator.  
9. SW metre band indicator.  
10. Auto Tuning System indicator.  
12  
19  
11  
1
11. Low battery indicator.  
12. Frequency units indicator.  
13. Frequency and time display  
14. Dual time indicator.  
18  
4
15. Radio standby indicator.  
16. HWS standby indicator.  
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15  
16  
17  
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This radio can be operated using:-  
3 Alkaline LR6 (AA size) batteries.  
AC adaptor (supplied).  
Installing batteries  
1. Position the radio face down.  
2. Press the catch marked "OPEN" and slide in the  
direction shown.  
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3. Insert the 3 LR6 (AA) size batteries as shown in the  
diagram.  
4. Replace the battery cover as shown in the diagram.  
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Battery replacement  
The battery indicator will display the battery condition for  
approx. 7 seconds after the radio is switched off. If the  
indicator falls below "2" the batteries should be replaced.  
After removing the batteries you have approximately 3  
minutes to replace the batteries after which clock and  
memory information will be lost.  
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Low battery warnings  
1. Replace batteries if the battery indicator falls below  
"2"  
2. Replace batteries if "E" and the low battery indicator  
flash in the display.  
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3. Whenever the low battery symbol appears on the  
display the batteries should be replaced.  
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Using the AC adaptor  
The AC adaptor supplied with this radio is an auto-switch-  
ing type and will operate from either a 110volt or 230volt  
AC supply.  
Insert the adaptor plug into the socket marked DC IN 4.5V  
on the left side of the radio. Plug the adaptor into a stand-  
ard 13A mains socket outlet. Whenever the adaptor is used  
the batteries are automatically disconnected.  
The mains adaptor should be disconnected from the mains  
supply when not in use.  
We would recommend for economy that the R876 be  
used via the AC adaptor wherever possible with bat-  
tery operation for occasional or stand-by use only.  
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Setting the clock  
The clock will start running when the 3 LR6 (AA) size  
batteries are installed. The display will show "0:00".  
The clock can be set with the radio power on or off.  
1. If the radio is switched on press the "Display" button  
to display the time.  
2. Press the"Time Set" button for more than 2 seconds,  
the " SET " symbol will flash in the display  
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3. Whilst the " SET " symbol is flashing, set the correct  
time by pressing the numbered buttons. As you press  
each button the corresponding number will show on  
the display.  
4. If you press the wrong number, press the"C" (cancel)  
button which will delete one number at a time.  
Note: Time can only be adjusted whilst the " SET  
"
symbol is flashing in the display.  
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5. Press the"Enter"button to complete setting the clock,  
the display will now show the correct time.  
Note: Time should be entered in 24Hr format e.g. 3:00pm  
would be entered as 15:00.  
Setting dual time  
In addition to real time a second time zone can be pro-  
grammed into this radio.  
1. Press the "Real/Dual" button the display will show and  
flash "  
".  
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2. Press"Enter "button within 3 seconds, the display  
will stop flashing.  
3. Press and hold down the "Time Set" button for more  
than 2 seconds, the display "Set" will flash.  
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4. While " SET " symbol is flashing, set the correct time  
by pressing the numbered buttons. As you press each  
button the corresponding number will show on the dis-  
play.  
5. If you press the wrong number, press the"C" (cancel)  
button which will delete one number at a time.  
17  
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6. Press the "Enter" button to complete setting the dual  
time, the display will now show the correct dual time.  
7. Press the "  
" button followed by the "Enter"  
button to return the display to real time.  
Note:  
a. To temporarily change between real and dual time mode  
press the " " button, the symbol and dual  
time will be shown in the display. After approximately 3  
seconds the display will return to showing real time.  
b. To permanently change the display to dual time mode  
press the"  
ton. The  
mode.  
" button followed by the"Enter" but-  
symbol in the display indicating dual time  
c. To permanently change the display back to real time  
mode press the "  
"Enter" button. The  
the display.  
" button followed by the  
symbol will be removed from  
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Zero seconds set  
Press the "Time Set" button for more than 2 seconds,  
the " SET " symbol will flash in the display. Press the "0  
set" button, the display will show and flash "Set-00".  
Press the "Enter" button to reset seconds to 0.  
19  
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Waveband selection  
There are four waveband selection buttons located be-  
low the Liquid crystal display.  
Waveband  
Frequency coverage  
FM  
87.5-108  
153-513  
522-1710  
MHz  
kHz  
kHz  
LW  
MW  
SW  
1.711-29.999 MHz  
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1. Turn on the radio by pressing the"Power/Sleep" but-  
ton. The display will show the last waveband and fre-  
quency selected.  
2. Press one of the four waveband select buttons, the  
last frequency used on the selected waveband will be  
recalled and appear on the display.  
21  
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Note:  
If the SW band is selected pressing the "SW/Metre"  
button a second time will display a flashing "m" indicat-  
ing that a SW metre band may now be selected. For ex-  
ample pressing the "6/41m" button will allow direct ac-  
cess to the 41 metre band.  
22  
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Tuning  
Frequency Range  
520-1710kHz  
Aerial Type  
Illustration  
Band  
INTERNAL  
Rotate for best reception  
MW  
INTERNAL  
LW  
153-513kHz  
Rotate for best reception  
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Frequency Range  
87.5 - 108MHz  
Aerial Type  
Illustration  
Band  
FM  
TELESCOPIC  
Fully extend the aerial, angle and ro-  
tate for best reception.  
TELESCOPIC  
Fully extend the aerial, for best re-  
ception  
SW  
1.711-29.999MHz  
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Stations may be selected by using any one of the five different available tuning methods:  
Direct Tuning • Manual Tuning • Scan Tuning • Memory Recall Tuning • ATS Tuning on LW, MW and FM bands.  
Direct tuning  
Example: To tune to 100.70 MHz on the FM band.  
1. Press the "Power/Sleep" button to turn on the radio.  
2. Press the button marked "Freq" (Frequency)  
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3. Press the buttons marked [1] [0] [0] [.] [7] [0].  
Note: If a mistake is made during entry press the "C"  
button to clear the last digit entered.  
4. Press the button marked "Enter", the frequency and  
waveband will now appear in the display.  
Note: Make sure that you enter the decimal point [.] in  
100.70 MHz otherwise the display will show"SW" [10.070  
MHz].  
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5. Extend the aerial fully and rotate for best FM recep-  
tion.  
6. Adjust the Volume control for comfortable listening.  
27  
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7. When selecting a stereo FM station, and using stereo  
earphones, make sure that the FM mode switch is in  
the STEREO position.  
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Manual tuning  
1. Press the "Power/Sleep" button to turn on the radio.  
2. Select a waveband.  
29  
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3. A single press on the either the [  
] or [  
] down  
buttons will change the frequency up or down.  
Note: Each press of the [ ] or [ ] buttons will change  
the frequency in increments of:  
FM:  
50kHz  
LW:  
MW:  
SW:  
1kHz or 9kHz  
1kHz or 9kHz/10kHz  
1kHz or 5kHz  
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Scan tuning  
1. Turn on the radio by pressing the"Power/Sleep" but-  
ton.  
2. Select a waveband.  
31  
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4. Press and hold down either the tuning [  
] or [  
]
buttons for more than half a second to commence scan  
tuning. The radio will scan all frequencies in the se-  
lected band and stop automatically each time it finds  
an active station.  
32  
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5. Press and hold down either the tuning [  
] or [  
]
buttons for more than half a second to resume scan  
tuning. When the waveband end is reached the radio  
will beep and continue tuning from the opposite wave-  
band end.  
6. Adjust the Volume control for comfortable listening.  
33  
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Memory tuning  
You may store up to 54 preset stations in memory, 18 on  
SW, 18 on FM, 9 on LW and 9 on MW. To store a station in  
preset memory proceed as follows.  
1. Turn on the radio by pressing the"Power/Sleep" but-  
ton.  
2. Tune to the desired frequency using one of the previ-  
ously described tuning methods.  
34  
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3. Press the button marked "M" (memory), the memory  
symbol "M"together with a suggested preset number  
will flash in the display for 12 seconds.  
Note: If some of the presets have already been used the  
radio will suggest the next available preset location.  
4. Press the"Enter"button and your station will be stored  
in the suggested memory preset.  
35  
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5. Preset stations may be exchanged easily and at any  
time. Select the preset that is to be changed by press-  
ing the corresponding numbered button, press the"M"  
button, "M" and current preset location will flash in the  
display, whilst the display is flashing select the new  
preset location using one of the numbered buttons.  
6. The FM and SW bands have 18 presets. Presets 1-9  
are set in the normal manner. When presets 1-9 are full  
selecting another station to be preset will cause the dis-  
play to show"P2". An additional 9 presets can now be  
stored.  
36  
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Note:  
1. If all the preset memory locations are full pushing the  
"M" button will cause the display to show "FULL". If  
you still want to store a new station press any button  
1-9 for more than 2 seconds, the new station will be  
stored in the selected memory location, the original  
station in this location will be cancelled.  
2. Selecting a station or frequency that is already stored  
in preset memory will cause the display to show "[ ]"  
together with the stations preset memory location.  
The symbol "[ ]" indicates that the frequency has al-  
ready been stored.  
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Recalling a station from preset memory  
1. Turn on the radio by pressing the"Power/Sleep" but-  
ton.  
2. Select the waveband for the station required.  
38  
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3. Press the button corresponding to the preset memory  
location for the required station. The radio will instantly  
tune to the station and the display will show its frequency  
and memory location. If you wish to select another pre-  
set station press any one of the numbered buttons for  
instant access. For SW presets 01-09, push the "P1/  
P2"button until the"P2" symbol appears in the display  
followed by any one of the numbered buttons.  
only for FM and SW  
Cancelling a preset station  
1. Recall the preset station, push the "M" button. The  
preset location and "M" will flash in the display, push  
"C" to cancel the preset station.  
39  
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Changing preset station order  
e.g. exchanging preset station 2 with preset station 7.  
1. Recall preset 2.  
2. Push the button"M", preset 2 and"M" will flash in the  
display.  
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3. Push button "7". Presets 2 and 7 will now be ex-  
changed.  
41  
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ATS (Auto Tuning System)  
This radio provides an easy to use feature called ATS  
(Auto Tuning System) which operates on FM, LW and  
MW bands.  
1. Turn on the radio by pressing the"Power/Sleep" but-  
ton.  
2. Push any one of the FM/LW/MW band buttons for more  
than 2 seconds. The radio will beep and the display  
will flash "ATS" indicating the radio is in ATS mode.  
3. The radio will then scan from the lowest frequency on  
the selected waveband, automatically storing stations in  
preset memory 1-9 based on signal strength order. On  
FM a further 9 stations will be stored in memory page 2.  
Memory page 2 is selected by pressing the "P1/P2"  
button until the display shows"P2"  
42  
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4. After scanning is complete, a beep will be heard. The  
display will show"M [1]"and the station with the strong-  
est signal for your area will be selected.  
5. If during ATS operation no stations are found the dis-  
play will show "- - - - -" for 2 seconds before returning  
to the last frequency used prior to commencement of  
ATS operation.  
43  
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Note:  
1. The maximum number of presets on MW and LW is 9,  
if during ATS operation more than 9 stations are found  
only the 9 strongest stations will be stored in the preset  
memories. On FM the maximum number of presets is  
18, if during ATS operation more than 18 stations are  
found only the 18 strongest stations will be stored in the  
preset memories.  
2. If the number of stations found during ATS operation is  
less than 9 the display will show the actual number of  
stations found. For example, if only 5 stations are found,  
the display will show "[1] 2 3 4 5, when scanning is  
complete.  
3. The SW band has no ATS function.  
4. All previously stored preset stations will be erased when  
ATS operation commences.  
5. ATS operation can be cancelled by pressing the"Power/  
Sleep" button.  
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Setting the alarm  
The alarm can be set with the radio power on or off.  
1. If the radio is switched on press the "Display" button  
to display the time.  
45  
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Setting the radio alarm (Standby)  
1. Press the  
button the display will flash  
and show the last alarm time set, (this will  
be "0:00" the first time the alarm is set).  
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2. Press the numbered buttons to set the alarm on time.  
e.g. to set an alarm time of 13:30, press the buttons  
"[1] [3] [3] [0]". If a wrong number was keyed in, press-  
ing the "C" button will delete one digit for each press.  
Press the"Enter" button, the display will show"13:30"  
and "Standby" will stop flashing indicating that the  
alarm has been set to 13:30.  
If the time keyed in is not valid i.e. 25:30, the display will  
show "E" for about 2 seconds and then revert to show-  
ing real time.  
47  
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3. When the alarm time is set, the display will return to  
showing real time and the colon will start to flash.  
4. To verify the alarm time press the "  
" button  
to display the alarm time followed by the "Enter" but-  
ton to return to real time mode.  
48  
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5. To cancel the alarm time, press the "  
ton, the display will flash "  
" but-  
", press the "C"  
button to cancel the alarm time.  
Note:  
1. When the alarm is sounding, press the"Power/Sleep"  
button to turn off the alarm for 24 hrs.  
2. The radio alarm will last for one hour if not turned off  
by pushing the "Power/Sleep" button.  
3. Tune the radio to the required station before setting  
the alarm. When the alarm operates the radio will play  
the last station selected.  
Setting the HWS (Humane Wake System) alarm  
A repeating beep tone will sound when using the HWS alarm. The alarm beep will increase in volume every 15  
seconds for 1 minute followed by 1 minutes silence before repeating the cycle. The HWS alarm will sound for 30  
minutes unless turned of by pushing the "Power/Sleep" button.  
49  
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1. The HWS alarm is set in the same way as the radio  
alarm except instead of pushing the" " but-  
ton the " " button is used instead.  
The HWS alarm may be turned off by pressing the  
"Power/Sleep" button.  
Note: The HWS alarm can be set independently from  
the buzzer alarm enabling 2 alarm times to be set,  
one for the radio alarm and one for the HWS alarm.  
Setting the count down timer  
The radio has a count down timer which can be set to  
beep when the time set has elapsed. The count down  
timer can be set with the radio power on or off.  
1. If the radio is switched on press the "Display" button  
to display the time.  
2. Press the "Timer" button, the display will flash  
"Timer".  
50  
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3. Enter the required time in hours and minutes (max 23  
hours and 59 minutes) using the numbered buttons.  
e.g. to enter 1 hour and 30 minutes, press the buttons  
marked [1], [3], [0].  
4. Press the "Enter" button, "Timer" in the display will  
stop flashing indicating that the count down timer has  
been set. After approximately 5 seconds the display  
will revert to showing real time.  
51  
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4. While the count down timer is active the time remain-  
ing may be checked by pressing"Timer" button, press  
the "Timer" button to continue with the time remain-  
ing or press the "Enter" button to restart the count  
down timer.  
5. The count down buzzer will sound for 1 minute and  
then turn off. The count down buzzer can be turned off  
at any time by pressing the "Power/Sleep" button.  
52  
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6. To cancel the count down timer press the"Timer" but-  
ton, and then press the "C" button, "Timer" on the  
display will disappear and the display will revert to  
showing real time.  
Note:  
1. When the count down alarm is active, press the  
"Power/Sleep" button to turn off the alarm.  
2. The count down alarm will sound for 1 minute unless  
turned off by pushing the "Power/Sleep" button.  
3. If an incorrect time is entered e.g. 25.30 the display  
will show "E" for about 2 seconds before reverting to  
showing real time.  
53  
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Setting the sleep timer  
The sleep timer will automatically switch off the radio af-  
ter a preset time has elapsed.  
1. Press and continue to hold down the "Power/Sleep"  
button the display will cycle through the available sleep  
times in the order 60-45-30-15-60. Release the  
"Power/Sleep" button when the required sleep time  
appears in the display.  
54  
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2. The  
symbol together with the sleep time set will  
appear in the display for 2 seconds after which the  
display will revert to showing frequency.  
3. To cancel the sleep function, press the"Power/Sleep"  
button, the  
symbol will disappear and the display  
will revert to showing real time.  
55  
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Mono/Stereo and DX/Local switch  
1. To listen to FM stereo broadcasts, tune to the required  
station, plug in headphones and set the"Mono/Stereo  
switch located on the left side of the radio to the  
"Stereo" position. If the station being received is weak  
some hiss may be audible, to reduce the hiss set the  
"Mono/Stereo" switch to the "Mono" position to re-  
turn to mono operation.  
Note: FM stereo is only available via headphones.  
2. When listening to AM (MW/LW/SW) broadcasts, the  
"DX/Local" switch adjusts the radios sensitivity. If you  
are listening to a strong station and the signal is dis-  
torted, set the"DX/Local" switch to the"Local"posi-  
tion for best reception. For normal or weak stations  
set the "DX/Local" switch to the"DX" position for maxi-  
mum sensitivity.  
56  
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Headphones  
Headphones for use with this radio should be stereo and  
fitted with a 3.5mm stereo jack plug. Insert the headphone  
plug into the socket marked on the left side of the radio.  
When the headphones are plugged in the loudspeaker  
is automatically disconnected.  
57  
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Lock switch  
The "Lock" switch is use to prevent unintentional op-  
eration of the radio.  
1. Set the "Lock" switch located on the right side of the  
radio to the up position, the  
symbol will ap-  
pear in the display. The "Power/Sleep" and all other  
buttons will be disabled. This will prevent accidental  
operation when the radio is packed in a suitcase or  
carrying pouch. To release the "Lock" switch move  
the switch down, the  
from the display.  
symbol will be removed  
Light  
Pressing the light button located on the top of the radio  
will turn on the light and and illuminate the display for  
approximately 15 seconds.  
58  
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Portable shortwave aerial  
1. Pull out the jack plug from the aerial reel and plug into  
the socket marked"AM EXT. ANT" located on the left  
side of the radio. Uncoil the aerial to a convenient length  
and attach the reel clip to a suitable support point.  
MW step size switch  
1. This switch located inside the battery compartment  
provides a means of changing the MW step size from  
9kHz to 10kHz. In Europe and most other parts of the  
world set the switch to the 9kHz position. For the USA  
and Canada set the switch to the 10kHz position.  
59  
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Reset button  
If the radio fails to operate correctly, or some digits on  
the display are missing or incomplete carry out the fol-  
lowing procedure.  
1. Switch off the radio and remove the batteries.  
2. With the aid of a suitable implement (the end of a pa-  
per clip) press the reset button located in the battery  
compartment for at least 5 seconds, this will reset the  
microprocessor, clock time and clear all stations stored  
in preset memory (except SW).  
60  
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Care and maintenance  
Do not allow this radio to be exposed to water, steam or  
sand. Do not leave the radio where excessive heat could  
cause damage such as in a parked car where the heat  
from the sun can build up even though the outside tem-  
perature may not seem too high.  
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Specifications  
Frequency range:  
SW  
1.711 - 29.999MHz  
FM  
87.5 - 108MHz  
120m 2.300 - 2.495MHz  
LW  
MW  
153 - 513kHz  
90m  
75m  
60m  
49m  
41m  
31m  
25m  
21m  
19m  
16m  
13m  
11m  
3.200 - 3.400MHz  
3.900 - 4.000MHz  
4.750 - 5.060MHz  
5.950 - 6.200MHz  
7.100 - 7.350MHz  
9.400 - 9.990MHz  
11.600 - 12.100MHz  
13.570 - 13.870MHz  
15.100 - 15.800MHz  
17.480 - 17.900MHz  
21.450 - 21.750MHz  
25.600 - 26.100MHz  
520 - 1710 or 522 - 1710kHz  
(dependent on position of MW step size switch)  
62  
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Specifications cont.  
Power requirements 4.5V  
Output power:  
Sockets  
180mW.  
Batteries  
3 x IEC size LR6 (AA size)  
Battery Life  
Approx. 16-20hrs of listening  
when used for 4 hours a day at  
normal volume using alkaline bat-  
teries.  
Headphone socket  
AM external aerial  
DC in  
3.5mm dia stereo.  
3.5mm.  
4.5volts centre pin negative.  
Circuit features  
Accessories:  
Carrying pouch, Stereo ear-  
phones, AC adaptor, Portable  
shortwave aerial.  
Semiconductors:  
1 LSI, 10 IC's, 8 FET, 24 transis-  
tors, 25 diodes, 2 LED  
Aerial system  
LW  
MW  
SW  
FM  
Built in ferrite aerial  
Built in ferrite aerial  
Telescopic aerial  
Telescopic aerial  
The company reserves the right to amend the specification without notice.  
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Notes:  
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Guarantee  
This radio is guaranteed for twelve months from the date of delivery to the original owner against failure due to faulty  
workmanship or component breakdown, subject to the procedure stated below. Should any component or part fail  
during this guarantee period it will be repaired or replaced free of charge.  
The guarantee does not cover:  
1. Damage resulting from incorrect use.  
2. Consequential damage.  
3. Receivers with removed or defaced serial numbers.  
N.B. Damaged or broken telescopic aerials will not be replaced under guarantee.  
Procedure:  
Any claim under this guarantee should be made through the dealer from whom the instrument was purchased It is  
likely that your Roberts dealer will be able to attend to any defect quickly and efficiently, but should it be necessary  
the dealer will return the instrument to the company’s service department for attention. In the event that it is not  
possible to return the instrument to the Roberts dealer from whom it was purchased, please contact Roberts Radio  
service department at the address shown on the back page of this manual before taking further action.  
These statements do not affect the statutory rights of a consumer.  
If you need any further advice, please call our Technical Helpline on :-  
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Imported by:-  
ROBERTS RADIO LIMITED  
PO BOX 130  
MEXBOROUGH  
SOUTH YORKSHIRE  
S64 8YT  
ROBERTS RADIO TECHNICAL SERVICES DEPARTMENT  
97-99 Worton Road  
Isleworth Middlesex  
TW7 6EG  
Technical Helpline :- 0181 758 0338  
Issue 2  
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