Roberts R761 User manual

R761
3 Band
Portable Radio
Please read this manual before use
ROBERTS
Sound for Generations
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1
Contents
Contents ................................................................................................................................................................................... 1
Controls ................................................................................................................................................................................. 2-3
Battery Operation ..................................................................................................................................................................... 4
Mains Operation (via AC adaptor) ........................................................................................................................................... 4
Operating your radio - FM ........................................................................................................................................................ 5
Operating your radio - Medium and Long wave ...................................................................................................................... 6
Headphones............................................................................................................................................................................. 7
General .................................................................................................................................................................................... 7
Specifications ........................................................................................................................................................................... 8
Notes ........................................................................................................................................................................................ 9
Guarantee .............................................................................................................................................................................. 10
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 2
Controls (Top)
1. Headphone socket
2. On/Off and Volume control
3. Tone button
4. FM button
12345678
5. MW button
6. LW button
7. Tuning scale
8. Tuning control
9. Telescopic aerial
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3
Controls (Left hand end)
9. DC socket
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 4
Battery operation
Reduced power, distortion, and a ‘stuttering’ sound are all signs that the
battery may need replacing.
If the radio is not to be used for any extended period of time it is
recommended that the battery is removed from the radio.
1. Remove the battery cover on the base of the unit by unscrewing the
retaining stud using a suitable coin or screwdriver.
2. Fit the battery IEC 6F100 (PP9) to the connector.
3. Replace the battery cover and refit the stud.
Mains operation (via AC adaptor)
The AC adaptor for use with the R761 should provide 9 volts DC output
at 300mA centre pin negative (Roberts type PU609).
1. Insert the adaptor plug into the DC socket on the left side of your
radio. Plug the adaptor into a standard 13A mains socket outlet.
Whenever the adaptor is used the batteries are automatically
disconnected.
2. The AC adaptor should be disconnected from the mains supply and
the radio when not in use.
We would recommend for economy that the R761 be used via the AC
adaptor whenever possible with battery operation for occasional or
stand-by use only.
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Operating your radio FM
1. Switch on your radio by rotating the Volume control clockwise until
a click is heard.
2. Press the FM button to select the FM waveband.
3. Adjust the Volume control until a sound is heard.
4. For FM reception fully extend the Telescopic aerial and then angle
and rotate for best reception.
5. Rotate the Tuning control to select the desired station. On FM the
Tuning scale is marked in Megahertz (MHz).
6. Adjust the Volume control to the required setting.
7. Adjust the Tone control to the required setting.
8. To switch off your radio rotate the Volume control fully anticlock-
wise until a click is heard.
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
Operating your radio (Medium and Long wave)
1. Switch on your radio by rotating the Volume control clockwise until
a click is heard.
2. Press either the MW or LW button.
3. Adjust the Volume control until a sound is heard.
4. For MW or LW reception rotate your radio to the position giving best
reception.
Note : The telescopic aerial is inoperative on MW and LW.
5. Rotate the Tuning control to select the desired station. On MW &
LW the Tuning scale is marked in Kilohertz (kHz).
6. Adjust the Volume control to the required setting.
7. Adjust the Tone control to the required setting.
8. To switch off your radio rotate the Volume control fully anticlock-
wise until a click is heard.
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Headphones
1. A Headphone Socket (3.5mm) located on the left hand end of the
top panel is provided for use with either headphones or an earpiece.
Inserting the headphone plug automatically mutes the internal
loudspeaker.
General
Do not allow this unit to be exposed to dripping or splashing. Do not leave
your 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 temperature may not seem too high. It is recommended that the
FM band be used wherever 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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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 8
Specifications
Power Requirements
Mains (via AC adptor) AC 230 volts, 50Hz only
Battery 1 x IEC 6F100 (PP9)
Battery Life Approx. 80hrs of listening for 4 hours a
day at normal volume.
Circuit Features
Loudspeaker 92mm 4ohms
Output Power 1W into 4ohms
Headphone socket 3.5mm dia
Aerial System FM Telescopic aerial
MW Built-in Ferrite aerial
LW Built-in Ferrite aerial
Frequency Coverage
FM 87.5 -108MHz
MW 522 - 1620kHz
LW 150 - 281kHz
The Company reserves the right to amend the specification without notice.
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Notes:
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