Roberts FM RDS/DAB Digital Radio RD-50CFM User manual

FM RDS/DAB digital radio
with
Please read this manual before use
ROBERTS
Sound for Generations
RD-50CFM

Controls...........................................................................2-3
Battery operation ...............................................................4
Using the AC adaptor........................................................4
Operating your radio - DAB...............................................5
Selecting a station - DAB .................................................6
Secondary services - DAB................................................7
Display modes - DAB........................................................7
Finding new stations - DAB ..............................................8
Autoselect - DAB ..............................................................8
Manual tuning - DAB .........................................................9
Signal strength display - DAB ..........................................9
Using your radio's Pause Plus feature......................10-11
Classic FM button........................................................... 11
Operating your radio - FM ...............................................12
Manual tuning - FM..........................................................13
Display modes - FM ........................................................14
FM stereo/mono ..............................................................14
System reset ...................................................................15
Headphone socket ..........................................................16
Display backlight.............................................................16
General ............................................................................17
Specifications..................................................................17
Contents
Circuit features ................................................................17
Guarantee........................................................................ 18
1

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 2
Controls
1. Volume control
2. Headphone socket
3. Pause Plus button
4. Power button
6. Auto Tune button
(Top)
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7. Info button
8. Classic FM button
9. Telescopic aerial
10. Tuning control
11. LCD display
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3
Controls
10. DC in socket
11. Line output socket
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10

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 4
Battery operation
1. Release the catch securing the rear door of your radio.
2. Insert four LR20 (D size) batteries into the spaces in the compart-
ment. Take care to ensure all batteries are inserted with the correct
polarity as shown inside the battery compartment. Close the rear
door and secure the catch
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-10 is used via the
AC adaptor whenever possible with battery operation for occasional
or stand-by use only.
Using the AC adaptor
1. InserttheadaptorplugintotheDCinsocket ontherearofyourradio.
2. Plugtheadaptor into a standard 13A mains socketoutlet. Whenever
the adaptor is used the batteries are automatically disconnected.
The AC adaptor should be disconnected from the mains supply and
the radio when not in use.
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Operating your radio - DAB
1. Carefully 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 quick scan of UK Band III
DAB channels will be carried out. The display will show "Autotune
Quick 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 Autotune is completed the first station (in numeric-alpha
order 0...9...A....Z) will be selected.
6. Ifthestationlistisstillemptyafter theAutotuneyourradiowilldisplay
"NoSignal".
7. If no signals are found it may be necessary to relocate your radio
to a position giving better reception.
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 6
Selecting a station - DAB
1. The top line of the display shows the name of the station currently
selected.
2. Rotate the Tuning control to scroll through the list of available
stations. Stop rotating the Tuning control when you find the station
that you wish to hear.
3. Press and release the Tuning control to select the station. The
display may show "Tuning" while your radio finds the new station.
4. Adjust the Volume control to the required setting.
Note: If after selecting a station the display shows "Not Available"
it may be necessary to relocate your radio to a position giving better
reception.
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Displaymodes - DAB
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. Programme type Displaystypeofstationbeinglistenedto
e.g. Pop, Classic, News, etc.
c. Multiplex Name Displays name of multiplex to which
currentstation belongs.
d. Signal strength Displayssignalstrengthforstationbeing
listened to.
e. Time and date Displays current time and date.
Secondaryservices-DAB
1. Certain radio stations have one or more secondary services
associatedwiththem.Ifastationhasasecondaryserviceassociated
withit the displaywillshow ">" next tothestation name onthestation
list. The secondary service will then appear immediately after the
primary service as you rotate the tuning control clockwise.
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 8
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
"AutotuneQuickScan".YourradiowillperformascanoftheUKDAB
frequencies. As new stations are found the station counter on the
right-handsideofthe display will increase and stations will beadded
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 tuning control to select a station your
radio can be set to automatically select a station.
1. Rotate the Tuning control a few clicks in either direction, imme-
diately press and hold in the tuning control until the display shows
"Autoselect ON".
2. Rotate the Tuning control 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
ineither direction,immediatelypress andholdin theTuning control
until the display shows "Autoselect OFF".
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Manual Tuning - DAB
Manual tuning allows you to tune directly to the various DAB Band III
channels. UK DAB stations located in the range 11B to 12D.
1. Press and hold in the Tuning control until the display shows
"Manual tune".
2. Rotate the Tuning control to select the required DAB channel.
3. Press and release the Tuning control to select the channel.
4. Rotate the Tuning control to select the stations contained within
the Multiplex (group of stations) for the selected DAB channel.
5. Press and release the Tuning control 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. Position your radio and carefully angle the telescopic aerial for best
reception using the signal strength display as a guide. Move your
radio around and position 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.
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1

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 10
Using your radio's Pause Plus feature
How many times has your favourite radio station been interrupted
by that phone call from a double glazing firm or someone selling that
must have item? Sound familiar? Now with a single press of the
button you can put your favourite station on hold while
you answer that important call. After the call or other important task
is finished simply press the button to return to your
favourite station exactly where you left off so that you never miss
a single word.
Radio stations can effectively be put on hold for typically 20 minutes
butcanbeupto35minutesdependingonthestationyouarelistening
to.
Note the feature only operates on the DAB
waveband.
1. Toplaceyourradioin modesimplypressthe
button, the sound from the loudspeaker will be muted. The display
will alternate between PAUSE and the time which the radio station
has been on Pause.
2. To return to the radio station that you were listening to simply press
the button and your radio will continue playing from
where you left off. The display will alternate between DELAY and
the amount by which you are behind real time.
3. Whenusing your radio's featurethe lower lineofdisplay
automatically switches to show the Maximum delay time for the
station you are listening to.
4. To return to real time press in and release the Tuning control, the
display will return to show DAB in right hand corner.
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Pause Plus continued
1. As soon as you switch on your radio the feature is
working silently in the background so, say for example, you want
to hear a news item again press the twice and rotate the
tuning control anti-clockwise to scroll back to the item you wish to
listen. The display will show the amount of time you have scrolled
back.
Note the memory only starts when your radio is
switched on.
2. Whenusing your radio's featurethe lowerlineofdisplay
automatically switches to show the Maximum delay time for the
station you are listening to.
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ClassicFMbutton
Your radio is fitted with a button which when pressed will automatically
tune your radio to Classic FM on the DAB waveband
1. Press the Classic FM button.
2. Your radio will automatically tune to Classic FM.
Note: If Classic FM is not available in your area the display
will show "Not Found" as an alternative it may be possible
to listen to Classic FM on the FM waveband.
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 12
Operating your radio - FM
1. Carefully 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 Band 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 AutoTune button for 0.5
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 control to the required setting.
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 Band button to select the FM band. Fully extend the
Telescopic aerial .
3. Rotate the Tuning control 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 to the required setting.
6. To switch off your radio press the On/Off button.
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If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 14
Display modes - FM
On FM the bottom line of the display can be set to any of the following
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. Program Type Displaystypeof stationbeing listenedto
e.g. Pop, Classic, News, etc.
c. Signal strength Displayssignalstrengthforstationbeing
listened to.
d. Time and date Displays current time and date.
e. Frequency 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 Tuning control until the
display shows "Audio mode: Mono". Your radio will switch to mono
mode.
2. Toreturn to stereo mode pressand hold intheTuning control until
the display shows "Audio mode: Auto". Your radio will switch to
stereo mode.
Note: FM stereo is only available when listening via earphone/
headphones
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Systemreset
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 in the Tuning control 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 "Quick scan" of the DAB band will be
performed,otherwise a "Quick scan" will becarriedoutthenext time
the DAB band is selected.
If a problem persists our technical staff would be pleased
to offer any assistance on operating the radio. Our technical
helpline number is 020 8758 0338.
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22

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 16
Headphonesocket
A3.5mm Headphone Socket located on thetopleft hand cornerofyour
radio is provided for use with either headphones or an earpiece.
Inserting a plug automatically mutes the internal loudspeaker.
Displaybacklight
1. The display backlight will be switched on for approximately 12
seconds when any button is pressed.
2. When your radio is powered by AC mains the display backlight will
always be switched on.

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CircuitFeatures
Loudspeaker 75mm full range
Output Power 1.0 Watt
Headphone socket 3.5mmdia
Aerial System FM Telescopic aerial
DAB Telescopic aerial
Specifications
Power Requirements
Mains AC 230 volts, 50Hz only
Batteries 4 x LR20 (D size)
Battery Life Approx. 30 hours of listening for 4 hours a day
at normal volume using alkaline cells.
Frequency Coverage
FM 87.5-108MHz
DAB 174.928 - 239.200MHz
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.

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 18
Guarantee
Thisinstrumentis guaranteedfortwelvemonthsfromthedateofdelivery totheoriginalowneragainstfailureduetofaulty workmanshiporcomponent
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.
These statements do not affect the statutory rights of a consumer.

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ROBERTSRADIOTECHNICALSERVICES
97-99 Worton Road
Isleworth Middlesex
TW76EG
Technical Helpline :- 020 8758 0338 (Mon-Fri during office hours)