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Roberts Radio RD-21 - page 1
RD-21 Please read this manual before use ROBER TS Sound for Generations FM RDS/DAB digital radio ...
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Roberts Radio RD-21 - page 2
Controls ...............................................................................2 Battery operation .................................................................3 Mains operation ...................................................................3 Operating your radio - DAB .................................................4 Selecting a ...
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Roberts Radio RD-21 - page 3
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 2 Controls 1. T elescopic aerial (on rear) 2. On/Off button 3. Mains LED indicator 4. T reble control 5. Liquid crystal display (LCD) 6. + 5 button (T op) 1 13. T uning Up button 14. T uning Down button 15. T uning control 16. Station presets 17. Bass ...
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Roberts Radio RD-21 - page 4
3 Battery operation 1. Remove the Battery cover on the rear of the unit by pushing the battery door in and downwards. 2. Insert six LR20 (D size) batteries into the spaces in the compartment. T ake care to ensure all batteries are inserted with the correct polarity as shown inside the battery compartment. Replace the battery cover . 3. Reduced powe ...
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Roberts Radio RD-21 - page 5
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 4 Operating your radio - DAB 1. Fully extend the telescopic aerial. 2. Press the On/Off button to switch on your radio. The display will show "Welcome to DAB" for a few seconds. 3. If this is the first time the radio is used a quick scan of ...
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Roberts Radio RD-21 - page 6
5 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 the 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 T uning" while your radio finds ...
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Roberts Radio RD-21 - page 7
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 6 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 li ...
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Roberts Radio RD-21 - page 8
Display modes - DAB Y our radio has seven display modes:- 1. Press the Info/Menu 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 T ype Displays the type of station being listened to e.g. Pop, Classic, News etc. c. Multiplex Name Displays the nam ...
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Roberts Radio RD-21 - page 9
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 8 f e g e. Frequency D i s p l a ys t h e f r e q u e n c y o f t h e D A B multiplex for the station listened to. f. Bit rate & audio type Displays the digital bit rate & audio type for the station being listened to. g. Signal Error Displays t ...
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Roberts Radio RD-21 - page 10
9 Finding new stations - DAB As time passes new stations may become available. T o find new stations proceed as follows:- 1. Press and release the AutoT une button , the display will show "Scan - ning". Y our 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 d ...
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Roberts Radio RD-21 - page 11
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) Manual T uning - DAB Manual tuning allows you to tune directly to the various band III DAB chan- nels. UK DAB stations are currently located in the range 1 1B to 12D. 1. Press and hold down the Info/Menu button and rotate the Tuning control or press th ...
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Roberts Radio RD-21 - page 12
Dynamic Range Control (DRC) settings - DAB The DRC facility 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 hold down the Info/Menu button and rotate the Tuning control or press the Up or Down buttons until the display shows "DRC value" ...
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Roberts Radio RD-21 - page 13
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 12 Station order setup - DAB This function enables you to choose how the stations are arranged when selecting a station. There are four options available - favourite station, alphanumeric, active station and prune stations. Note: Y our radio default st ...
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Roberts Radio RD-21 - page 14
Active station When this setting is switched on the display will show only those that a signal can be found for . Prune stations Some DAB services may stop broadcasting or you may not be able to receive a station. Prune stations will delete the DAB stations from your station list that can no longer be received. When this feature is selected your ra ...
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Roberts Radio RD-21 - page 15
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 14 Operating your radio - FM 1. Carefully extend the telescopic aerial 2. Press the On/Off button to switch on your radio. The radio will tune to the last selected radio station. 3. Press the FM/DAB button to select the FM band. 4. Press and release th ...
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Roberts Radio RD-21 - page 16
Manual tuning - FM 1. Press the On/Off button to switch on your radio. 2. Press and release the FM/DAB button to select the FM band. Fully extend the T elescopic 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 end of the waveband is reached the radio ...
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Roberts Radio RD-21 - page 17
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 16 Display modes - FM When listening in FM mode the bottom line of the display can be set to any of the following modes:- 1. Press the Info/Menu button to cycle through the various modes. a. Scrolling text Displays scrolling text messages such as artis ...
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Roberts Radio RD-21 - page 18
17 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. T une to the required station as previously described. 3. Press and hold down the required Preset button until the display shows e.g. Preset 1 saved. The station will be stored under the chosen preset butto ...
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Roberts Radio RD-21 - page 19
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 18 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 FM/DAB button . 3. Momentarily press the required Preset button , your radio will tune to the station stored i ...
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Roberts Radio RD-21 - page 20
19 System reset If your radio fails to operate correctly , or some digits on the display are missing or incomplete, if running on batteries first check that the batteries are not exhausted. If you still suspect a problem with your radio please carry out the following procedure. 1. In FM mode, press and hold down the Info/Menu button for 2 seconds. ...
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Roberts Radio RD-21 - page 21
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 20 Headphone socket A 3.5mm Headphone Socket located on the rear of your radio is provided for use with either headphone s or an earpie ce. Inse rting a plug autom atica lly mutes the internal loudspeaker . IMPORT ANT : Excessive sound pressure from ea ...
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Roberts Radio RD-21 - page 22
21 Software version The software display cannot be altered and is just for your reference. 1. T o view which software version your radio has press and hold in the Info/Menu button . 2. Rotate the Tuning control or the Up and Down buttons until the software version shows on the display . 1 2 2 2 ...
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Roberts Radio RD-21 - page 23
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 22 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 ...
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Roberts Radio RD-21 - page 24
23 Specifications Power Requirements Mains AC 230 volts, 50Hz only Batteries 6 x LR20 (D size) Battery Life Up to 150 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 Circuit Features Loudspeaker 2 x 79mm Output Power 3W Headphone socket 3.5mm dia Line out socket ...
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Roberts Radio RD-21 - page 25
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) The wire coloured BLUE must be connected to the terminal marked N or coloured BLACK. The wire coloured BROWN must be connected to the terminal marked L or coloured RED. Mains supply The RD-21 will operate from a supply of AC 230 volts, 50Hz only . DO N ...
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Roberts Radio RD-21 - page 26
Notes 25 ...
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Roberts Radio RD-21 - page 27
If you need any further advice, please call our T echnical Helpline on :- 020 8758 0338 (Mon-Fri) 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 ...
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Roberts Radio RD-21 - page 28
ROBERTS RADIO TECHNICAL SER VICES 97-99 Worton Road Isleworth Middlesex TW7 6EG T echnical Helpline :- 020 8758 0338 (Mon-Fri during office hours) Website: http://www .robertsradio.co.uk Issue 1 ...
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