R9903
3 Band Portable Radio
Sca le
0
Po w er
LW
MW
1
FM
2
160 0
280
3
140 0
1200
1000
108
260
4
5
6
106
104
100
96
220
200
18 0
800
700
7
8
16 0
150
600
530
9
10
92
Tuning
88
kHz
kHz
MHz
R 9903
3 Band Portable Radio
Please read this manual before use
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Controls
(Left side)
(Right side)
DC 6v
+
+
5
7
6
Volume
7
8
5. DC input socket
6. Headphonesocket
7. Volume control
8. Batterycompartment
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2
0181 758 0338 (Mon-Fri)
Battery operation
1. RemovetheBatterycoverontherearoftheunitbypushingthecatch
in the direction of the arrow.
2. InsertfourLR6(AAsize)batteriesintothespacesinthecompartment.
Take care to ensure all batteries are inserted with the correct polarity
as shown inside the battery compartment. Replace the battery cover.
3. Reduced power, distortion, and a ‘stuttering’ sound are all signs that
the batteries may need replacing.
4. If the radio is not to be used for any extended period of time it is
recommended that the batteries are removed from the radio.
Operation via an AC adaptor (not included)
TheACadaptorforusewiththeR9903shouldprovide6voltsDCoutputat
300mA centre pin negative (Roberts type PU6-B).
Scale
0
Power
LW
M
W
1
F
M
2
16 00
140
2
80
3
1. Place your radio on a flat surface.
0
108
2
60
4
12 00
100
5
106
104
100
96
92
2
20
0
6
2
00
180
8
00
70
7
0
6
8
160
150
00
9
2. PlugtheadaptorleadintotheDCinputsocketlocatedonthelefthand
side end of your radio ensuring that the plug is pushed fully into the
socket. The batteries will be automatically disconnected
10
5
30
Tuning
88
k
Hz
ON
k
Hz
ROBERTS
PU6-B
M
Hz
ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢂ
ꢅ
ꢆ
ꢇ
ꢈ
ꢉ
ꢊ
ꢈ
ꢉ
ꢋ
ꢃ
ꢁ
ꢂ
ꢂꢌ
ꢍ
R
9
9
03
3
Band Portable Radio
ꢀ
3. Plug the adaptor into a wall socket and switch on.
3
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Operating your radio
1. Turn on your radio by rotating the Volume control clockwise until a
click is heard. The Power LED will light up
2. Set theWaveband selector to the required waveband.
3. Adjust the Volume control until a hissing sound is heard.
Volume
4. RotatetheTuning knob toselectthedesiredstation. OnMWandLW
the Tuning scale is marked in kilohertz (kHz). On FM the Tuning
scale is marked in Megahertz (MHz)
5. For MW and LW reception rotate your radio to the position giving best
reception.
LW M W F M
6. ForFMreceptionfullyextendtheTelescopicaerialandthenangleand
rotateforbestreception. Aknucklejointatthebaseoftheaerialallows
thismovementandanangleof45degreeswillusuallybesatisfactory.
6. Adjust the Volume control to the required sound level.
S
c
a
l
e
P
o
w
e
r
LW
0
MW
1
FM
7. To turn off your radio rotate the Volume control fully anticlockwise
2
1600
14 0 0
12 00
100 0
28 0
3
until a click is heard.
10 8
26 0
4
5
10 6
10 4
10 0
96
92
22 0
20 0
180
6
80 0
700
7
Note : The telescopic aerial is inoperative on MW and LW.
8
160
150
60 0
9
10
53 0
Tu n in g
88
kHz
kHz
MHz
R
9 903
3
Band Portable Radio
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4
0181 758 0338 (Mon-Fri)
Headphones
1. A Headphone Socket (3.5mm) located on the right hand end of your
radio is provided for use with either headphones or an earpiece.
Inserting the headphone plug automatically mutes the internal loud-
speaker.
Volume
General
Do not allow this unit to be exposed to water, steam or sand. Do not leave
yourradiowhereexcessiveheatcouldcausedamagesuchasinaparked
car where the heat from the sun can build up even though the outside
temperature may not seem too high. It is recommended that the FM band
be used where ever possible as better results in terms of quality and
freedom from interference will usually be obtained than on the MW or LW
bands.
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5
Specifications
Power Requirements
Batteries
Circuit Features
Loudspeaker
OutputPower
Headphonesocket
Aerial System FM
MW
4 x LR6 (AA size)
77mm
External
DC 6 Volts
@ 300mA
400 mW into 8ohms
3.5mm dia
centre pin negative (-).
Battery Life
Approx. 80hrs of listening for 4 hours a day at
normal volume using alkaline cells.
Telescopicaerial
Built-in Ferrite aerial
Built-in Ferrite aerial
Frequency Coverage
LW
FM
87.5-108MHz
522-1620kHz
144-281kHz
MW
LW
ROBERTSRADIOLIMITED
PO BOX 130
MEXBOROUGH
SOUTH YORKSHIRE
S64 8YT
The Company reserves the right to amend the specification without notice.
If you need any further advice, please call our Technical Helpline on :-
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6
0181 758 0338 (Mon-Fri)
Guarantee
This instrument 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.
Theguaranteedoesnotcover:
1. Damage resulting from incorrect use.
2. Consequentialdamage.
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
beabletoattendtoanydefectquicklyandefficiently, butshoulditbenecessarythedealerwillreturntheinstrumenttothecompany’sservicedepartment
forattention. IntheeventthatitisnotpossibletoreturntheinstrumenttotheRoberts'dealerfromwhomitwaspurchased, pleasecontactRobertsRadio
Technical Services department at the address shown below before taking further action.
These statements do not affect the statutory rights of a consumer.
ROBERTSRADIOTECHNICALSERVICESDEPARTMENT
97-99 Worton Road
IsleworthMiddlesex
TW7 6EG
Technical Helpline:- 0181 758 0338 (Mon-Fri)
Issue 1
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