RD-3
FM RDS/DAB digital radio
Please read this manual before use
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Controls
3
5
7
(Top)
1
2
4
6
8
17
15
13
11
9
16
14
12
10
1. On/Off button
7. Telescopic aerial (on rear)
8. Headphone socket (on end)
9. Tuning control
13. Tuning up button
14. Liquid crystal display (LCD)
15. Treble control
2. Mains LED indicator
3. Auto Tune button
4. DAB/FM button
5. +5 button
10. Select button
16. Bass control
11. Info button
17. Volume control
6. Station presets
12. Tuning down button
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Battery operation
1. Remove the Battery cover on the rear of the unit by pushing the
battery door in and downwards. .
2. Insert six LR14 (C size) batteries into the spaces in the compartment.
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.
We would recommend for economy that the RD-3 is used on the
mains whenever possible with battery operation for occasional or
stand-by use only.
Mains operation
1. Place your radio on a flat surface.
2. Plug the mains lead into the Socket located on the rear of your radio
ensuring that the plug is pushed fully into the socket.
3. Plug the other end of the mains lead into a wall socket and switch on
the wall socket.
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Operating you radio - DAB
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1. Fully extend the telescopic aerial
2. Press the On/Off button to switch on your radio. The display will
show "Roberts DAB digital radio" for a few seconds.
3. If this is the first time the radio is used a full scan of all band III DAB
channels will be carried out. The display will show "Autotune Full
scan". If the radio has been used before the last used station will be
selected.
4. During Autotune as each group of stations is detected the bottom line
of the display will show its name and the station count will be updated.
The top line of the display shows a bargraph indicating progress of
the Autotune.
5. When the Auto tune is complete the first station (in numeric-alpha
order 0...9...A....Z) will be selected.
6. If the station list is still empty after the Autotune you radio will display
"No Signal".
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Selecting a station - DAB
1. The top line of the display shows the name of the station currently
selected.
2. Rotate the Tuning control or press theUp orDown buttons to scroll
through the list of available stations.
3. Pressandreleasethe Selectbuttontoselectthestation. Thedisplay
may show "Tuning" while your radio finds the new station.
4. Adjust the Volume and Tone controls to the required settings.
Note certain stations that appear on the station list may be data only
services - these stations do not broadcast any audio information e.g.
Digizone.
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Secondary services - DAB
1. Certain radio stations have one or more secondary services associ-
ated with them. If a station has a secondary service associated with
it the display will show ">" next to the station name on the station list.
The secondary service will then appear immediately after the primary
service as you turn the tuning control.
Display modes - DAB
a
Your radio has five display modes:-
1. Press the Info button to cycle through the various modes.
a. Scrolling text
Displays scrolling text messages such
as artist/track name, phone in number
etc.
b
c
b. Program Type
c. Multiplex Name
d. Signal strength
e. Time and date
Displays type of station being listened to
e.g. Pop, Classic, News etc.
Displays name of multiplex to which
current station belongs.
Displays signal strength for station being
listened to.
d
Displays current time and date.
e
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Finding new stations - DAB
As time passes new stations may become available. To find new stations
proceed as follows:-
1. Press and release the AutoTune button, the display will show
Autotune Quick scan. Your radio will perform a scan of the UK DAB
frequencies. As new stations are found the station counter on the
right-hand side of the display will increase and stations will be added
to the list
2. To carry out a full scan of the entire DAB band III frequencies press
and hold down the AutoTune button for more than 2 seconds and
then release. The display will show Autotune Full scan. As new
stations are found the station counter on the right-hand side of the
display will increase and stations will be added to the list
Autoselect - DAB
As an alternative to pressing the Select button to select a station your
radio can be set so as to automatically select a station.
1. Rotate the Tuning control a few clicks in either direction, immedi-
ately press and hold down the Select button until the display shows
Autoselect ON.
2. Rotate the Tuning control or press the Up or Down buttons until the
station you require is visible on the display. After a few seconds your
radio will automatically select the station shown on the display.
3. To switch off autoselect rotate the Tuning control a few clicks in
either direction, immediately press and hold down the Select button
until the display shows Autoselect OFF.
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Manual Tuning - DAB
Manual tuning allows you to tune directly to the various band III DAB
channels. UK DAB stations are currently located in the range 11B to 12D.
1. Press and hold down the Select button until the display shows
Manual tune. Release the Select button.
2. Rotate the Tuning control or press the Up or Down buttons to
select the required DAB channel.
3. Press and release the Select button to select the channel.
4. Rotate the Tuning control or press the Up or Down buttons to
select the stations contained within the Multiplex (group of stations)
for the selected DAB channel.
5. Press and release the Select button to return to normal tuning
mode.
Signal strength display - DAB
1. Repeatedly press and release the Info button until the lower line of
the display shows signal strength.
2. Your radio can now be positioned for best reception using the signal
strength display as guide. Move your radio around and position your
radio so as to give maximum number of black rectangles on signal
strength display.
3. The clear unfilled rectangle indicates minimum signal level required
for satisfactory reception.
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Operating you radio - FM
1. Fully extend the telescopic aerial
2. Press the On/Off button to switch on your radio. The display will
show "Roberts DAB digital radio" for a few seconds.
3. Press the DAB/FM button to select the FM band.
4. Press and immediately release the Auto Tune button, your radio will
scan in an upwards direction (low frequency to high frequency) and
stop automatically when it finds a station of sufficient strength.
5. After a few seconds the display will update and show station name.
6. To find other stations press and release the AutoTune button as
before.
7. To scan the FM band in a downwards direction (high frequency to low
frequency) press and hold down the Auto Tune buttonfor 2 seconds
and then release.
8. When the waveband end is reached your radio will recommence
tuning from the opposite waveband end.
9. Adjust the Volume and Tone controls to the required settings.
10. To switch off your radio press the On/Off button.
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Manual tuning - FM
1. Press the On/Off button to switch on your radio.
2. Press the FM/DAB button to select the FM band. Fully extend the
Telescopic aerial .
3. Rotate the Tuning control or press the Up or Down buttons to tune
to a station. The frequency will change in steps of 50kHz.
4. When the waveband end is reached the radio will recommence
tuning from the opposite waveband end.
5. Set the Volume control and Tone controls to the desired settings.
6. To switch off your radio press the On/Off button.
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
10
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Display modes - FM
a
On FM the bottom line of the display can be set to any of the following
modes:-
b
c
1. Press the Info button to cycle through the various modes.
a. Scrolling text
b. Program Type
c. Signal strength
Displays scrolling text messages such as artist/
track name, phone in number etc.
Displays type of station being listened to e.g.
Pop, Classic, News etc.
d
Displayssignalstrengthforstationbeinglistened
to.
e
f
d. Time and date
e. Frequency
Displays current time and date.
Displays frequency of the station being listened
to.
f. Audio mode
Display shows Auto (stereo) or mono.
FM Stereo/Mono
1. If a station being received is weak some hiss may be audible. To
reduce the hiss press and hold in the Select button until the display
shows Audio mode : mono your radio will switch to mono mode.
2. To return to stereo mode press and hold in the Select button until
the display shows Audio mode :Auto, your radio will switch to stereo
mode.
Note: FM stereo is only available when using earphone/headphones
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Presetting stations - DAB and FM
There are 10 memory presets for each of the 2 wavebands.
1. Press the On/Off button switch on the radio.
2. Tune to the required station as previously described.
3. Press and hold down the required Preset button until the display
shows e.g. Preset 1 stored. The station will be stored under the
chosen preset button. Repeat this procedure for the remaining
presets.
4. Presets 6 to 10 are obtained by pressing +5 followed by Preset
button 1 to 5. e.g preset 7 can be set by pressing +5 followed by
holding down Preset button 2 until the display shows Preset 7
stored.
5. Stations stored in preset memories may be overwritten by following
the above procedure.
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Recalling a preset station - DAB and FM
1. Press the On/Off button to switch on the radio.
2. Select the required waveband by pressing the Band button.
3. Momentarily press the required Preset button, your radio will tune to
the station stored in preset memory.
Presets 6 to 10 are obtained by pressing +5 and Preset button 1 to
5. e.g preset 7 can be recalled by pressing +5 followed by Preset
button 2
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System reset
If your radio fails to operate correctly, or some digits on the display are
missing or incomplete carry out the following procedure.
1. Switch off your radio
2. Switch on your radio - as soon as the screen shows Roberts DAB
digital radio press and hold down the Select button until the display
shows System Reset.
3. A full reset will be performed all presets and station lists will be
erased.
4. If DAB was used last then a full Auto tune will be performed,
otherwise a full Auto Tune will be carried out the next time the DAB
band is selected.
If a problem persists our technical staff would be pleased to help offer
any assistance on operating the radio. Our technical helpline number
is 020 8758 0338.
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Headphone socket
A 3.5mm Headphone Socket located on the right-hand end of you radio
is provided for use with either headphones or an earpiece. Inserting a
plug automatically mutes the internal loudspeaker.
Display backlight
1. The display backlight will be switched on for 8 seconds when any
button is pressed.
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General
Do not allow this radio to be exposed to water, steam or sand. 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
DAB band be used wherever possible as better results in terms of quality
and freedom from interference will usually be obtained than on the FM
band.
Specifications
Power Requirements
Circuit Features
Loudspeaker
Mains
AC 230 volts, 50Hz
6 x LR14 (C size)
only
92mm 4ohms
1W into 4ohms
3.5mm dia
Batteries
Output Power
Battery Life
Approx. ?? hours of listening for 4 hours a day
at normal volume using alkaline cells.
Headphone socket
Aerial System FM
Telescopic aerial
Frequency Coverage
DAB Telescopic aerial
FM
87.5-108MHz
DAB 174.928 - 239.200MHz
If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
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Mains supply
The RD-3 will operate from a supply of AC 230 volts, 50Hz
only.
The wire coloured BLUE must be connected to the terminal marked N or
coloured BLACK.
DO NOT cut off the mains plug from this equipment. If the plug fitted
is not suitable for the power points in your home or the cable is too short
to reach a power point, then obtain an appropriate safety approved
extension lead or adaptor. If in doubt consult your dealer.
The wire coloured BROWN must be connected to the terminal marked L
or coloured RED.
If nonetheless the mains plug is cut off, remove the fuse and dispose of
the plug immediately to avoid a possible shock hazard by inadvertent
connection to the mains supply.
If this product is not supplied with a mains plug, or one has to be fitted,
then follow the instructions given below:
IMPORTANT. DO NOT make any connection to the larger terminal which
is marked with the letter E or by the safety earth symbol
Green or Green-and-yellow.
or coloured
The wires in the mains lead are coloured in accordance with the following
codes :-
BLUE - NEUTRAL
BROWN - LIVE
Fuse
When replacing the fuse only a 3A ASTA approved to BS1362 type
should be used and be sure to re-fit the fuse cover.
IF IN DOUBT - CONSULT A QUALIFIED ELECTRICIAN.
Replacement fuse holders are available from Roberts Radio Technical
Services at the address shown on the rear of this manual.
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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.
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 Technical Services at the address shown on the rear of this manual.
If you need any further advice, please call our Technical Helpline on :-
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020 8758 0338 (Mon-Fri)
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ROBERTS RADIO TECHNICAL SERVICES
97-99 Worton Road
Isleworth Middlesex
TW7 6EG
Technical Helpline :- 020 8758 0338 (Mon-Fri during office hours)
Issue 1
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