Roberts Radio Radio RD 18 User Guide

RD-18  
DAB digital radio  
Please read this manual before use  
 
Controls  
(Top)  
1
2
3
4
5
11  
10  
9
8
7
6
1. On/Off button  
7. Info button  
2. Mains LED indicator  
3. Line out socket (on rear)  
4. Telescopic aerial (on rear)  
5. Headphone socket (on end)  
6. Tuning control  
8. Select button  
9. Auto Tune button  
10. Liquid crystal display (LCD)  
11. Volume control  
If you need any further advice, please call our Technical Helpline on :-  
 
2
020 8758 0338 (Mon-Fri)  
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-18 is used on the  
mains whenever possible with battery operation for occasional or  
stand-by use only.  
1
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.  
 
3
Operating your radio  
1. Fully extend the telescopic aerial  
2
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 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.  
7. If no signals are found it may be necessary to relocate your radio to  
as position giving better reception.  
If you need any further advice, please call our Technical Helpline on :-  
 
4
020 8758 0338 (Mon-Fri)  
Selecting a station  
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.  
3. Press and release the Select button 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.  
2
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.  
3
4
 
5
Secondaryservices  
1. Certain radio stations have one or more secondary services asso-  
ciated 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.  
Displaymodes  
Your radio has five display modes:-  
a
1
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. Programme 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.  
Displayssignalstrengthforstationbeing  
listened to.  
d
Displays current time and date.  
e
If you need any further advice, please call our Technical Helpline on :-  
 
6
020 8758 0338 (Mon-Fri)  
Finding new stations  
As time passes new stations may become available. To find new  
stations proceed as follows:-  
1
1. Press and release the Auto Tune 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 Auto Tune 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  
2
Autoselect  
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, imme-  
diately press and hold down the Select button until the display  
shows Autoselect ON.  
1
1
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  
in either direction, immediately press and hold down the Select  
button until the display shows Autoselect OFF.  
 
7
Manual tuning  
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
1. Press and hold down the Select button until the display shows  
Manual tune. Release the Select button.  
2. Rotate the Tuning control to select the required DAB channel.  
3. Press and release the Select button 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 Select button to return to normal tuning  
mode.  
2
Signal strength display  
1. Repeatedly press and release the Info button until the lower line  
of the display shows signal strength.  
2. Position your radio and angle the telescopic aerial for best reception  
using the signal strength display as guide. Move your radio around  
and position so as to give maximum number of black rectangles on  
signal strength display.  
1
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 :-  
 
8
020 8758 0338 (Mon-Fri)  
Systemreset  
If your radio fails to operate correctly, or some digits on the display are  
missing or incomplete carry out the following procedure.  
1
2
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.  
2
3. A full reset will be performed and the station list will be erased.  
4. A Quick scan will then be performed.  
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.  
9
 
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.  
Line out socket  
A 3.5mm Line out socket located on the rear of you radio is provided  
for connecting the audio signal to an external amplifier. Inserting a line  
out audio cable will not mute the internal loudspeaker. Set the volume  
control to minimum if desired.  
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.  
If you need any further advice, please call our Technical Helpline on :-  
 
10  
020 8758 0338 (Mon-Fri)  
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.  
Specifications  
Circuit Features  
Loudspeaker  
Power Requirements  
92mm4ohms  
3W into 4ohms  
3.5mmdia  
Mains  
AC 230 volts, 50Hz  
6 x LR14 (C size)  
only  
Batteries  
Output Power  
Battery Life  
Headphone socket  
Aerial System  
Approx. 17 hours of listening for 4 hours a day  
at normal volume using alkaline cells.  
Frequency Coverage  
Telescopic aerial  
DAB 174.928 - 239.200MHz  
11  
 
Mainssupply  
The wire coloured BLUE must be connected to the terminal marked N or  
coloured BLACK.  
The RD-18 will operate from a supply of AC 230 volts, 50Hz  
only.  
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.  
If you need any further advice, please call our Technical Helpline on :-  
020 8758 0338 (Mon-Fri)  
 
12  
Notes  
13  
 
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.  
These statements do not affect the statutory rights of a consumer.  
If you need any further advice, please call our Technical Helpline on :-  
 
14  
020 8758 0338 (Mon-Fri)  
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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