Roberts Rambler Uno Portable Bluetooth Radio

Product Specifications

• Radio: DAB radio
• Main Adaptor: Included
• Display: OLED display
• Speaker: Loudspeaker
• Additional Features: Telescopic aerial, Passive radiator, Travel lock switch, Headphone socket

Product Usage Instructions

A – Connect to the Mains

1. Place the radio on a flat surface.
2. Fully extend the telescopic aerial located on the top right-hand corner.
3. Plug the mains adaptor cable into the DC power input socket.
4. Plug the mains adaptor into a wall socket and switch it on.
5. A start-up screen will be displayed, and a station scan will be performed.
6. When a signal is found, the current time will appear on the display.

B – Switch On Your Radio

1. Press the On/Off control to switch on the radio.
2. If it’s the first time using the radio, a scan of DAB channels will be carried out.

C – Select a DAB Radio Station

1. If needed, select DAB mode using the Mode button.
2. Rotate the Tuning control to browse available DAB stations.
3. Press the Tuning control to select a station and adjust the volume.
4. Press the Info/Menu button to cycle through various display options.

D – Scan for DAB Stations

As time passes or if you move to a different area, new stations may become available.

1. Select DAB mode by pressing the Mode button.
2. Press and hold the Info/Menu button and select ‘Full scan’ to scan for new stations.

Features

• DAB+ / FM RDS digital radio with built-in battery charging
• Bluetooth audio streaming from smartphone, tablet or laptop
• 20 radio station presets (10x DAB and 10x FM)
• Equaliser setting (bass and treble)
• Telescopic aerial
• AC adaptor included / Batteries 4x AA size (not included)
• 50mm loudspeaker with passive radiator
• OLED display with adjustable display brightness
• Clock and sleep timer
• Stereo headphone output (3.5mm jack)
• Travel lock switch

Controls

1. Power/ Volume/Sleep
2. Mode button
3. Info/Menu button
4. Preset Buttons 1-2
5. Favourites button
6. Tuning, Select & Navigation
7. Loudspeaker
8. OLED display
9. Passive radiator
10. Travel lock switch
11. DC input socket
12. Headphone socket
13. Telescopic aerial
14. Battery compartment
15. QR codes for online instructions

Plug in & play DAB radio

A – Connect to the mains

Please read the safety leaflet provided before connecting your radio to the mains.

1. Place your radio on a flat surface.
2. Fully extend the telescopic aerial located on the top right-hand corner.
3. Plug the cable from the mains adaptor into the DC power input socket. Plug the mains adaptor into a wall socket and switch on the socket.
4. A startup screen will be displayed, and a station scan will be performed.
5. When a signal has been found, the current time will appear on the display.
   • Note: If no signals are found it may be necessary to relocate your radio to a position giving better reception and carry out a scan for new stations.

B – Switch on your radio

1. Press the On/Off control to switch on the radio. After each use, the radio will remember the mode used and then switch on in that mode the next time it is used.
2. If this is the first time the radio is used, a scan of the Band III DAB channels will be carried out.

C – Select a DAB radio station

1. If needed, press and release the Mode button until the DAB mode is selected.
2. Rotate the Tuning control to step through the list of available DAB stations.
3. Press the Tuning control to select the station. Adjust the Volume.
4. Some radio stations may have one or more additional broadcasts associated with them. If these are available, they will appear immediately after the main station.
5. Press the Info/Menu button to cycle through the various display options.
   • The display options are scrolling text, program type, multiplex name, channel/frequency, bit rate, signal strength (the minimum signal marker () shows the minimum strength needed for good DAB reception), and date.

D – Scan for DAB stations

As time passes, new stations may become available, or you may have moved to a different part of the country.

1. Press and release the Mode button until DAB is selected.
2. Press and hold the Info/Menu button and then select ‘Full scan’ by pressing the Tuning control
3. Your radio will perform a scan of the Band III DAB channels. As new stations are found, they will be added to the list stored in the radio.

Play FM radio

A – Search tuning – FM

1. Fully extend the telescopic aerial.
2. Press and release the Mode button until FM is selected.
3. Rotate the Tuning control clockwise or anti-clockwise to manually tune your radio. Press the Tuning control to scan upward or downward (direction is set by the last manual rotation).
   • The radio will stop automatically when it finds a station of sufficient strength.
4. If the signal is strong enough and there is RDS data present, then the radio will display the station name. Adjust the Volume.
   • Press the Info/Menu button to cycle through the various display options.
   • The display options are scrolling text, program type, frequency, audio type, signal strength, and date.

Bluetooth

Connecting Bluetooth devices

1. Ensure Bluetooth is enabled on your smart device.
2. Ensure your radio is switched on. Press and release the Mode button until the Bluetooth mode is selected on your radio.
3. The radio will show that it is ‘Pairing’.
4. On your smart device, select ‘Rambler Uno’. Once the connection is established, you may now play your music. Adjust the volume on your Bluetooth device or your radio.

Playing audio

1. The audio player in your smart device may be able to respond to the Play/Pause, Next or Previous track on the radio.
2. Press the Tuning control to pause playback. Press the control again to resume playback.
3. Rotate the control clockwise or anti-clockwise to skip to the next or previous track. Note: Not all player applications or devices may respond to all of these controls.

Connect a different device

1. To connect a different device, long press on the Info/Menu button, select ‘Disconnect’ and confirm ‘Yes’ by pressing the Tuning control. Your radio will become discoverable by other devices.
2. To clear all Bluetooth pairings, long press on the Info/Menu button, select ‘Clear Pairing’ by pressing the Tuning control

Presets

Preset radio stations

There are 20 memory presets, 10 for DAB and 10 for FM. Presets are remembered in the event of a power failure.

To store a preset

1. Tune to the required radio station.
2. Apply a long press on the Favourites button.
3. Use the Tuning control to scroll to an unused preset or a preset you wish to change.
4. Press the Tuning control to store. ‘Preset 2 Saved’ will be displayed. The preset number will be shown on the display.

Note: Buttons 1 & 2 enable quick access to the first two stored presets on the favourites list. A long press on button 1 or 2 will store a tuned-in radio station.

To recall a preset

1. Choose DAB or FM mode.
2. Apply a short press on the Favourites button.
3. Use the Tuning control to scroll to the desired preset. 4 Press the Tuning control to select it.

Note: If you want to select preset 1 or preset 2 from the favourites list, apply a short press on button 1 or 2.

Menu options

1. Long press the Info/Menu button to access your radio’s menu system.
2. Rotate the Tuning control to show menu options.
3. Press the Tuning control to select menu options.
4. To exit a menu, press the Info/Menu button as needed.

DAB menu

• When in DAB mode, long press the Info/Menu button to access the following DAB menu options. Rotate the control and press to select an option.
• Recall Preset – Access the favourites list.
• Save Preset – Access the favourites list.
• Scan – Choose ‘Scan’ to scan the band III DAB channels.
• Manual tune – Choose ‘Manual Tune’ and then choose the desired DAB channel. The signal strength will be displayed. The signal marker () shows the minimum strength needed for good DAB reception.
• Prune – Choose ‘Yes’ to remove any stations that are no longer available.
• DRC – Choose from ‘DRC Off’, ‘DRC High’ or ‘DRC Low’. The DRC facility can make quieter sounds easier to hear when your radio is used in a noisy environment.
• Note: Not all DAB broadcasts use the DRC function.
• Station order – Choose ‘Station Order’ and then choose either ‘Alphanumeric’ or ‘Ensemble. ’
• Sleep – Your radio can be set to turn off after 15-120 minutes have elapsed. The sleep symbol will appear on the display.
• To cancel the sleep timer, enter the ‘Sleep’ menu and select ‘Off’ or press the power button to cancel the sleep timer and switch your radio off.

FM menu

• When in FM mode, long press the Info/Menu button to access the following FM menu options. Rotate the control and press to select an option.
  Recall Preset – Access the favourites list.
  Save Preset – Access the favourites list.
  Scan Setting – Choose ‘Scan Setting’ and then choose ‘Distant’ (your radio will scan for both weak and strong signals) or ‘Local’ (your radio will scan for stations with good reception).
• Audio Setting – Allows selection of ‘Auto’ or ‘Mono’. ‘Auto’ enables stereo to be played through headphones if a strong enough signal is present.
• If a station has a weaker signal and alternates between stereo and mono playback, selecting ‘Mono’ forces the signal to play mono.
• Sleep – Your radio can be set to turn off after 15-120 minutes have elapsed. The sleep symbol will appear on the display.
• To cancel the sleep timer, enter the ‘Sleep’ menu and select ‘Off’ or press the power button to cancel the sleep timer and switch your radio off.

System settings

• Apply a long press on the Info/Menu button to access the current menu options. Rotate the control to ‘System’ and press to select.
• Equaliser – Choose to access the ‘Treble’, ‘Bass’, and ‘Loudness’ equaliser settings. ‘Loudness’ will accentuate bass at low volume levels.
• Time/Date – Your radio will usually set the time using the DAB signal. From the current menu choose ‘System’, and then ‘Time’.

Options include:

• ‘Set 12/24 hour’, ‘Auto Update’, ‘Set Time/Date’ and ‘Set Date Format’,
• Brightness – Choose ‘Brightness’ and then select the desired brightness level between 1 and 10.
• Language – Choose ‘System’, ‘Language’ and then choose a desired language from the list.
• Factory Reset – To completely reset your radio to its initial state, perform a factory reset. Choose ‘Factory reset’ then ‘Yes. ’ All user-entered settings will be erased.
• SW Update – Software updates for the radio may be avaible in the future. Do not update unless recommended by customer support.
• SW Version – The software display cannot be altered and is just for your reference. Choose ‘SW Version. ’

Other information

Battery operation

Please read the safety leaflet provided before using batteries

Battery operation (Alkaline)

1. Slide the battery cover located underneath the unit in the direction of the arrow and lift upwards.
2. Slide the switch inside the battery compartment to the Alkaline position (as shown) and insert 4x AA size alkaline batteries.
   • Take care to ensure all batteries are inserted with the correct polarity, as shown in the battery compartment cover. Then, replace the battery cover.
   • Important: When using alkaline batteries, the battery switch must be placed in the alkaline position. Failure to do so could result in serious damage to the batteries or radio.
   • If no batteries are fitted, then set the switch to the Alkaline position. This minimises the power consumption when the radio is powered from the mains.

Battery operation (Rechargeable)

1. Slide the switch inside the battery compartment to the NiMH position (as shown).
2. Insert 4x identical Rechargeable AA size batteries. Then replace the cover. The radio is designed to be used with Nickel Metal Hydride (NiMH) rechargeable batteries. No other type of rechargeable battery should be used in the radio.
3. Plug the mains adaptor into your radio and then plug the adaptor into the mains. The battery icon on the display will show the status of battery charging. The batteries will be fully charged in about 7 hours.
   • Under some conditions, the battery icon may disappear after flashing only briefly.
   • This may happen if the batteries are already freshly charged or if the radio detects that you may be attempting to recharge alkaline batteries.
   • In these cases, the charging will be stopped.
4. When charging is completed, the battery icon will disappear from the display. If the charge process stops after a short while, this may be due to a faulty battery.

• In this case, the battery icon will flash, and a message will be displayed showing the faulty battery number – ‘Please Check Battery X’ , which corresponds to the graphic shown on the inside of the battery door.
• Note: Never mix alkaline and rechargeable batteries.
• Note: You should never attempt to recharge alkaline batteries in the radio. Attempted recharging of alkaline batteries can be dangerous.
• Important: when using rechargeable batteries the battery switch must be placed in the NiMH position. Batteries will be charged when the radio is either on or off and connected to the AC adaptor.
• When the batteries are nearly exhausted, the low battery indicator will flash for a short while. The radio will then switch itself off if it continues to be used.
• It may not be possible to switch the radio back on until the batteries are recharged, or until the radio is connected to the mains adaptor.
• 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.
• Caution: Replace batteries only with the same or equivalent type. Danger of explosion if the batteries are incorrectly replaced.

Specifications

Power requirements

• Mains (adaptor): 100 – 240V 50/60Hz
• Batteries: 4x AA size Alkaline or NiMH rechargeable (not included)
• Battery life: Between 8 and 10 hours using alkaline cells
• ErP – Standby Power
• The device has a power standby mode with a power consumption of less than 0.8W.
• After 15 minutes of inactivity in Bluetooth mode, the device will switch to standby mode.

Circuit features

• Headphone socket 3.5mm dia. stereo
• Aerial System DAB/FM Telescopic aerial
• Bluetooth standards A2DP, AVRCP, Bluetooth codecs supported SBC & AAC.
• Bluetooth BLE EIRP POWER (MAX.) 3.21dBm
• Bluetooth EDR EIRP POWER (MAX.) 3.28dBm
• Frequency coverage FM 87.5 – 108MHz, DAB 174.928 – 239.200MHz
• Bluetooth 5.2 frequencies 2.402 – 2.480GHz

Product markings

• DC Power input 7.5V / 1.6A
• This symbol indicates AC voltage.
• This symbol indicates DC voltage.

Mains adaptor

• Manufacturer of AC Adaptor: Teka, Model: TEKA-TB075160BS,
• Input voltage: AC100 – 240V, Input AC frequency: 50/60Hz,
• Output voltage: DC7.5V, Output current: 1.6A,
• Output power: 12.0W,
• Average active efficiency: > 88.72%, Efficiency at low load (10%) 85.26%,
• No-load power consumption: < 0.1W
• Please handle with care. The leather-cloth finish may be susceptible to damage if mistreated. Avoid all contact with any abrasive material, chemical substances or cleaning solutions.
• Your radio may be wiped with a clean, lightly damp cloth. Please ensure that the product is unplugged from the mains socket outlet before attempting this procedure.
• Designed & Engineered in the UK
• Roberts Radio Ltd, Roberts House, Hanworth Lane, Chertsey, KT16 9JX, UK
• Glen Dimplex Europe Ltd, Airport Road, Cloghram, Co. Dublin, K67 VE08, Ireland
• ROBERTS RADIO LIMITED
• www.robertsradio.com
• © 2025 Roberts Radio Limited

Frequently Asked Questions

• Q: What should I do if my radio does not find any signals?
  • A: If no signals are found, try relocating your radio to an area with better reception and perform a scan for new stations.
• Q: How do I save preset stations?
  • A: Long press on the Preset Buttons to save stations as presets.
• Q: What does the Favourites button do?
  • A: The Favourites button allows you to access your preferred stations easily.

Documents / Resources

Roberts Rambler Uno Portable Bluetooth Radio [pdf] User Guide 250205, Rambler Uno Portable Bluetooth Radio, Rambler Uno, Rambler Uno Bluetooth Speaker, Bluetooth Speaker, Bluetooth, Portable Bluetooth Radio, Portable Bluetooth Speaker, Portable Radio, Portable Speaker, Speaker, Radio

References

• User Manual