Roberts Gemini 45 RD-45 User manual

FM RDS/DAB digital radio
Please read this manual before use
ROBERTS
Sound for Generations
RD-45

Controls ........................................................................... 2-3
Battery operation .................................................................4
Using the AC adaptor ..........................................................5
Operating your radio - DAB .................................................6
Selecting a station - DAB.....................................................7
Secondary services - DAB...................................................7
Display modes - DAB ..........................................................8
Finding new stations - DAB .................................................9
Signal strength display - DAB..............................................9
Manual tuning - DAB .........................................................10
Dynamic range control - DAB............................................11
Operating your radio - FM .................................................12
Manual tuning - FM............................................................13
Display modes - FM...........................................................14
FM Stereo/Mono function ..................................................14
Software version................................................................15
Presetting stations.............................................................15
Recalling a preset..............................................................16
Favourite button.................................................................16
Contents
System reset......................................................................17
Headphone socket.............................................................18
Line out socket ..................................................................18
Display backlight................................................................18
General..............................................................................19
Specications ....................................................................20
Circuit features ..................................................................20
Guarantee..........................................................................21
Notes .................................................................................22
1

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 2
Controls
1. Telescopic aerial
2. On/Off button
3. FM/DAB button
4. Mains indicator
5. Auto Tune button
6. Menu button
7. Info button
(Front)
4
3
11
8. Preset buttons 1-4
9. Favourite button
10. Select button
11. Volume control
12. Tuning Down button
13. Tuning Up button
14. LCD display
9
10
12
5
6
7
8
12
13
14

3
Controls
15. Headphone socket
16. Line out socket
18
15
17. DC jack socket
18. Battery compartment
(Back)
16 17

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 4
Battery operation
1. Remove the battery cover on the back of the unit by sliding the cover
in the direction of the arrow.
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-45 is used via the
AC adaptor whenever possible with battery operation for occasional
or stand-by use only.
IMPORTANT: The batteries should not be exposed to excessive heat
 suchassunshine,reorthelike.Afteruse,disposablebatteriesshould
if possible be taken to a suitable recycling centre. On no account
should batteries be disposed of by incineration.
1

Using the AC adaptor
The AC adaptor for use with the RD45 should provide 7.5 volts DC output
at 900mA centre pin positive.
1. Insert the adaptor plug into the DC in socket on the rear of your
radio.
2. Plug the adaptor into a standard 13A mains socket outlet. 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.
• IMPORTANT: The mains adaptor is used as the means of connecting
the radio to the mains supply. The mains socket used for
the radio must remain accessible during normal use. In order
to disconnect the radio from the mains completely, the mains
adaptor should be removed from the mains socket outlet
completely.
5

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 6
Operating your radio - DAB
1. Carefully extend the telescopic aerial.
2. Press the On/Off button to switch on your radio. The mains indica-
tor will light and the display will show "Roberts digital radio" for a few
seconds.
3. IfthisisthersttimetheradioisusedaquickscanofUKBandIIIDAB
channels will be carried out. The display will show "Now tuning". If the
radio has been used before the last used station will be selected.
4. During Autotune, the display will show "Scanning" and as each group
of stations is detected the station count will be updated. The bottom
line of the display shows a bargraph indicating progress of the Auto-
tune.
5. WhentheAutotuneiscompletedtherststation(innumeric-alpha
order0...9...A....Z)willbeselected.Therststationinthelistofsta-
tions found will be played . The display will show the station name in
therstlineofthedisplayandotherinformationinthesecondline.
6. If the station list is still empty after the Autotune your radio will display
"No Signal".
7. If no stations are found, "Station not available" will be displayed and
it may be necessary to relocate your radio to a position giving better
reception.Youshouldthencarryoutanautoscantondstationsas
described on page 9.
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7
Selecting a station - DAB
1. The top line of the display shows the name of the station currently
selected.
2. Press the Tuning Up or Down buttons to scroll through the list of
available stations.
3. Press and release the Select button to select the station. The display
mayshow"Nowtuning"whileyourradiondsthenewstation.
4. Rotate the Volume control totherequiredsetting.
Note: If after selecting a station the display shows "No station avail-
able" it may be necessary to relocate your radio to a position giving
better reception.
2
4
Secondary services - DAB
1. Certain radio stations have one or more secondary services associated
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 press the Tuning Up button.
2. Press the Select button to select the station.
2
3
2

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 8
Display modes - DAB
Your radio has seven 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 Displays type of station being listened to
e.g. Pop, Classic, News, etc.
c. Multiplex Name Displays name of multiplex to which
current station belongs.
d. Time and date Displays current time and date.
 e.Channel&frequency Displayschannelnumberandfrequency.
f. Bit rate/audio type Displays the digital bit rate and audio
type.
g. Signal strength Displays signal strength for station being
listened to.
a
d
b
f
c
1
e
g

9
1
Finding new stations - DAB
Astimepassesnewstationsmaybecomeavailable.Tondnewstations
proceed as follows:-
1. Press and release the Auto Tune button, 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 station counter on the right-hand side of the display
will increase and stations will be added to the list.
Signal strength display - DAB
1. Press and release the Info button until 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. The clear unlled rectangle
indicatesminimumsignallevelrequiredforsatisfactoryreception.
3. Press the Info button to exit the signal strength display.
2
1,3

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 10
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 release the Menu button the display will show "Manual
tune".
2. Press and release the Select button.
3. Press either the Tuning Up or Down buttonstoselecttherequired
DAB channel.
4. Press and release the Select button to select the required DAB
channel. The open bar in the middle shows you the minimum signal
strength needed for good DAB reception. The signal strength bars will
go up and down showing the changing signal strength as you adjust
the telescopic aerial on your radio.
5. When a DAB signal is found, the display will show the name of the
DAB multiplex. Any new radio stations found will be added to the list
stored in the radio.
6. Press and release the Select button to return to normal tuning.
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1
3
3
4,6

11
1
Dynamic Range Control (DRC) settings - DAB
DRCcanmakequietersoundseasiertohearwhenyourradioisusedin
a noisy environment.
1. Press the On/Off button to switch on your radio.
2. Press and release the Menu button the display will show “Manual
tune.”
3. Press the Tuning Up or Down buttons until the display shows "DRC
value".
4. Press and release the Select button to enter adjustment mode.
5. Press the Tuning Up/Down buttonstoselectrequiredDRCsetting
(default is 0) .
DRC 0 DRC is switched off, Broadcast DRC will be ignored.
DRC 1/2 DRC level is set to 1/2 that sent by broadcaster.
DRC 1 DRC is set as sent by broadcaster.
6. Press and release the
Select buttontoconrmthesetting.Thedisplay
will return to normal tuning mode.
2
4,6
3,5
3,5

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 digital radio" for a few seconds.
3. Press the FM/DAB button to select the FM band.
4. Press the Tuning Up button and then press the Auto Tune button
yourradiowillscaninanupwardsdirection(lowfrequencytohigh
frequency)andstopautomaticallywhenitndsastationofsufcient
strength.
5. After a few seconds the display will update and show station name.
6. Press the Tuning Down button and then press theAuto Tune button
toscantheFMbandinadownwardsdirection(highfrequencytolow
frequency).
7. When the waveband end is reached your radio will recommence tuning
from the opposite waveband end.
8. Rotate the Volume controltotherequiredsetting.
9. To switch off your radio press the On/Off button.
3
2
4
6
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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. Press either the Tuning 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. Rotate the Volume control totherequiredsetting.
6. To switch off your radio press the On/Off button.
2
1
3
3
5

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 Displays type of station being listened to
e.g. Pop, Classic, News, etc.
c. Time and date Displays current time and date.
 d.Frequency&  Displaysfrequencyofthestationbeing 
audio mode listened to and displays the audio mode,
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 release the Select button until the display
shows "Mono", your radio will switch to mono mode.
2. To return to stereo mode, press and release the Select button until
the display shows "Auto", your radio will switch to stereo mode.
a
b
c
d
1

15
Presetting stations
There are 4 memory presets for each of the two wavebands.
1. Press the On/Off button to switch on your radio.
2. Tunetotherequiredstationaspreviouslydescribed.
3. Pressandholdtherequired Preset button until the display shows e.g.
Preset 1 saved. The station will be stored under the chosen preset
button. Repeat this procedure for the remaining presets.
4. Stations stored in the memories may be overwritten by following the
above procedure.
Software version
The software display cannot be altered and is just for your reference.
1. In FM mode, press the Menu button, the software version will appear
on the display.
2. In DAB mode, press the Menu button and then press the Tuning Up
or Down buttons until the software version appears on the display.
1
13
2
2
2

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri) 16
Recalling a preset
1. Press the On/Off button to switch on your radio.
2. Selecttherequiredwaveband.
3. MomentarilypresstherequiredPreset button, your radio will tune to
the station stored in preset memory.
1
Favourite button
Yourradioisttedwithabuttonwhichwhenpressedwillautomaticallyselect
therequiredwavebandandtunetoyourfavouritestation.Thiswillallow
you to store a total of one station from either the FM or DAB waveband.
1. Tosetupyourfavouritestation,tuneintotherequiredstation.
2. Press and hold down the Favourite button (10 sec) until the display
shows "Favourite stored".
Recalling your favourite station
1. Press the On/Off button to switch on the radio.
2. Momentarily press the Favourite button, your radio will tune to the
station stored in favourite memory.
3
2
1
2

17
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. Press and hold down the Menu button for 2 seconds the display
shows"PressSELECTtoconrmreset".
2. Press in and release the Select button to select System reset.
3. A full reset will be performed. All presets and station lists will be
erased.
4. After a system reset a scan of the DAB band will be performed.
In case of malfunction due to electrostatic discharge, reset the product
(reconnectionofpowersourcemayberequired)toresumenormal
operation.
If a problem persists our technical staff would be pleased to of-
fer any assistance on operating the radio. Our technical helpline
number is 020 8758 0338.
1
2

If you need any further advice, please call our Technical Helpline on :-
020 8758 0338 (Mon-Fri)
Headphone socket
A 3.5mm Headphone Socket located on the rear of your radio is provided
for use with either headphones or an earpiece. Inserting a plug automati-
cally mutes the internal loudspeaker.
IMPORTANT: Excessive sound pressure from earphones and headphones
can cause hearing loss.
Display backlight
1. When using on batteries, 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.
18
(Line out) socket
A 3.5mm Line out socket located on the rear of your radio is provided
forconnectingtheaudiosignaltoanexternalamplier.Insertingaplug
into the line output socket will not mute the internal loudspeaker. Set the
volumecontroltoadjustthespeakervolumelevelasrequired.

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.
The name plate is located on the back of your radio.
• Your radio should not be exposed to dripping or splashing and that
noobjectslledwithliquids,suchasvases,shallbeplacedonthe
radio.
• It is recommended to operate the product such that there is a minimum
distance (10cm recommended) to adjacent objects in order to ensure
good ventilation.
• The ventilation of the product should not be restricted by covering it or
its ventilation openings with items such as newspapers, tablecloths,
curtains etc.
• Nonakedamesourcessuchaslightedcandlesshouldbeplacedon
the product.
• It is recommended to avoid using or storing the product at extremes
of temperature. Avoid leaving the unit in cars, on window sills, in direct
sunlight etc.
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