BOSCH 18V-2 C GPB Professional Bluetooth Radio Instruction Manual

GPB Professional
18V-2 C | 18V-2 SC

Safety instructions

Read all the safety and general instructions.
Failure to observe the safety and general instructions may result in electric shock, fire, and/or serious injury.

Keep all the safety and general instructions for future reference.

• Always check the radio, power supply, cable, and plug before use. Stop using the radio if you discover any damage. Do not open the radio or power supply yourself, and have them repaired only by a qualified specialist using only original replacement parts. Damaged radios, power supplies, cables, and plugs increase the risk of electric shock.
• The main plug of the power supply must match the plug socket. Never modify the plug in any way. Do not use any adapter plugs with radios. Unmodified plugs and matching plug sockets will reduce the risk of electric shock.
• Do not misuse the cable of the power supply, for example by using it to carry, hang up, or unplug the radio. Keep the cable away from heat, oil, sharp edges, and moving parts. Damaged or entangled cords increase the risk of electric shock.

Do not expose the radio and power supply to rain or wet conditions. If water penetrates into the radio or power supply there is an increased risk of an electric shock.

• Do not open the battery. There is a risk of short-circuiting.
• In case of damage and improper use of the battery, vapors may be emitted. The battery can set alight or explode. Ensure the area is well ventilated and seek medical attention should you experience any adverse effects. The vapors may irritate the respiratory system.
• If used incorrectly or if the battery is damaged, flammable liquid may be ejected from the battery. Contact with this liquid should be avoided. If contact accidentally occurs, rinse off with water. If the liquid comes into contact with your eyes, seek additional medical attention. Liquid ejected from the battery may cause irritation or burns.
• The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.
• When the battery is not in use, keep it away from paper clips, coins, keys, nails, screws or other small metal objects that could make a connection from one terminal to another. A short circuit between the battery terminals may cause burns or a fire.
• Only use the battery with products from the manufacturer. This is the only way in which you can protect the battery against dangerous overload.
• Only charge the batteries using chargers recommended by the manufacturer. A charger that is suitable for one type of battery may pose a fire risk when used with a different battery.

Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water, and moisture. There is a risk of xplosion and short- circuiting.

Products sold in GB only:
Your product is fitted with a BS 1363/A approved electric plug with an internal fuse (ASTA approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be cut off and an appropriate plug fitted in its place by an authorized customer service agent. The replacement plug should have the same fuse rating as the original plug. The severed plug must be disposed of to avoid a possible shock hazard and should never be inserted into the main socket elsewhere.

• Never swallow button cells. Swallowing button cells can result in severe internal burns and death within two hours.

Ensure that the button cell is kept out of the reach of children. If you suspect that someone has swallowed a button cell or that a button cell has entered the body in another way, seek medical attention immediately.

• Ensure that battery replacement is carried out properly. There is a risk of explosion.
• Only use the button cells listed in this operating manual. Do not use any other button cells or other forms of electrical power supply.
• Do not attempt to recharge the button cell and do not short circuit the button cell. The button cell may leak, explode, catch fire and cause personal injury.
• Remove and dispose of drained button cells correctly. Drained button cells may leak and damage the product or cause personal injury.
• Do not overheat the button cell or throw it into the fire. The button cell may leak, explode, catch fire and cause personal injury.
• Do not damage the button cell and or take the button cell apart. The button cell may leak, explode, catch fire and cause personal injury.
• Do not allow damaged button cells to come into contact with water. Leaking lithium may mix with water to create hydrogen, which could cause a fire, an explosion, or personal injury.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Robert Bosch Power Tools GmbH is under license.

Product Description and Specifications

Please observe the illustrations at the beginning of this operating manual.
Product Features
The numbering of the product features refers to the illustration of the radio on the graphics page.

(1) Display
(2) On/off button
(3) Speaker
(4) Carrying handle
(5) Preset buttons
(6) Rod antenna
(7) Source button
(8) Mute button
(9) Seek button (scan up)
(10) Seek button (scan down)
(11) Bluetooth® button
(12) Battery cover
(13) Locking lever for the rechargeable battery cover| (14) Rechargeable battery holder
(15) Connector compartment
(16) Battery release button a)
(17) Rechargeable battery a)
(18) Button cell cover
(19) Utility hook
(20) Power supply a) (country-specific)
(21) Power supply plug-in connector a)
(22) Power supply connection socket
(23) USB charging socket
(24) AUX IN socket
(25) AUX cable
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a) Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range.
Display Elements

(a) Bluetooth® indicator
(b) Audio source indicator
(c) Storage space indicator
(d) Radiofrequency indicator (GPB 18V‑2 C)
(e) Menu function indicator
(f) Pause indicator| (g) Mute indicator
(h) Stereo indicator
(i) Battery charge indicator
(j) Time Indication
(k) Multi-function indicator (GPB 18V‑2 SC)
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Technical Data

Construction site radio Article number| | GPB 18V-2 C 3 601 DA3 0..| GPB 18V-2 SC 3 601 DA3 1..
---|---|---|---
DAB+ reception| | –| •
Operating voltage| | |
– for operation with power supply| V| 18| 18
– for battery operation| V| 18| 18
Nominal output of amplifier| W| 2.7.5| 2 • 7.5
FM reception range| MHz| 87.5-108| 87.5-108
DAB+ reception range| MHz| –| 174.928-239.200
Bluetooth compatibility| | Bluetoot0 5.0| Bluetooth 5.0
Bluetooth operating frequency range| MHz| 2402-2480| 2402-2480
Max. Bluetooth transmission power| mW| 8| 8
Button cell (back-up battery)| | CR 2032
3 V lithium battery| CR 2032
3 V lithium battery
Weight according to EPTA-Procedure 01:2014| kg| 2.8-3.9A}| 2.8-3.9A)
Protection ratings)| | IP 54 (dust and splash-
proof)| IP 54 (dust and splash-
proof)
Recommended ambient temperature during charging| °C| 0 to +35| 0 to +35
| | |

18V… ProCORE18V…
Recommended chargers| | GAL 18…
GAX 18…
GAL 36…
S| GAL 18…
GAX 18…
GAL 36…

A) Depends on battery in use
B) When the battery cover (12) and connector compartment (15) is closed
C) Limited performance at temperatures <0 °C

For additional technical data, visit: https://www.bosch- professional.com/ecodesign

Radio Energy Supply

Energy can be supplied to the radio via a lithium-ion rechargeable battery (17) or via the power supply (20).

Operation with Battery Pack

• Use only the chargers listed in the technical data. Only these chargers are matched to the lithium-ion rechargeable battery of your radio.
  Note: The use of rechargeable batteries unsuitable for your radio can lead to malfunctions or damage to the radio. The lithium-ion battery is protected against deep discharge by “Electronic Cell Protection (ECP)”. A protective circuit switches the radio off when the rechargeable battery is drained.

• Do not switch the radio back on after it has been switched off by the protective circuit. This can damage the battery.

Replacing a Rechargeable Battery
Disengage the locking lever (13) of the battery cover and open the battery cover (12) flap. To remove a rechargeable battery, press the battery release button (16) and pull the rechargeable battery out of the battery compartment. Do not use force to do this.
To insert a rechargeable battery, push it into the battery holder (14) such that the connections of the rechargeable battery are in line with the connections of the battery holder. Allow the rechargeable battery to engage. Close the battery cover (12) and lock it.

Battery Charge Indicator
When the rechargeable battery is inserted, you can see the state of charge of the battery (17) in the display. When the rechargeable battery is removed, you can see this on the battery itself.
Battery Charge Indicator in the Display
The battery charge indicator (i) will appear in the display as soon as a rechargeable battery with sufficient voltage is inserted and the radio is not connected to the mains supply via the power supply (20).

60−80 %
40−60 %
20−40 %
5−20 %
0−5 %

Battery Charge Indicator on the Rechargeable Battery
If the rechargeable battery is removed from the radio, its state of charge may be indicated by the green LEDs of the battery charge indicator on the rechargeable battery. Press the button for the battery charge indicator or to show the state of charge.
If no LED lights up after pressing the button for the battery charge indicator, then the battery is defective and must be replaced.
Battery model GBA 18V…

Battery model ProCORE18V…

Operation with power supply (see figure A)

• Use only the power supply listed in the technical data.
  This is the only way to ensure the proper operation of the radio.

• Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the type plate of the power supply.
  Open the protective cap of the connector compartment (15). Insert the plug-in connector (21) of the power supply into the connection socket (22) (DC IN 18V). Connect the power supply to the main supply. After removing the plug-in connector (21), reattach the protective cap of the connector compartment (15) to protect against dirt/debris.

Changing the button cell
To save time and other settings on the radio, a button cell must be inserted as a backup battery. Before using the radio for the first time, remove the protective strip of the inserted button cell. Disengage the locking lever (13) of the battery cover and open the battery cover (12) flap. If required, remove the rechargeable battery (17). Pull the protective film out under the cover (18) of the button cell.
Replace the button cell once the radio no longer saves time and the display gets weaker. To do this, turn the cover (18) of the button cell anticlockwise (e.g. with a coin) and remove the cover. Insert a new button cell.
When doing so, ensure that the polarity is correct according to the illustration on the inside of the cover (18).

Put the cover (18) of the button cell back on and turn it firmly clockwise. The cover is only securely locked if the markings on the cover and padlock symbol are facing each other.

• Take the button cell out of the radio if you are not using it for a prolonged period of time. When stored in the
  radio for longer periods, the button cell can corrode and discharge itself.

Operation

• Protect the radio against direct water contact. Water entering the radio increases the risk of an electric shock.
• Keep the battery cover and the protective cap of the connector compartment closed if possible. The closed covers protect the radio against water and dust.

Audio Operation

Switching On and Off
To switch on the radio, press the on/off button (2). The display (1) is activated and the audio source that was set the last time the radio was turned off is played back.
The display (1) is illuminated for a few seconds each time a button is pressed.
To switch off the radio, press the on/off button (2) again.
The current setting of the audio source will be saved.
Adjusting the Volume
After the radio is switched on, the volume is always set to low.
To increase the volume, turn the on/off button (2) clockwise; to reduce the volume, turn it anticlockwise.
The volume setting or will appear on the display for a few seconds with a value between 0 and 30.
Before adjusting or changing a radio station, set the volume to a low setting; before starting an external audio source, set the
volume to a medium setting.
To switch off the sound, you can briefly press the mute button (8). To switch on the sound again, either briefly press the mute button again or turn the on/off button (2) clockwise.
The volume can be changed at any time. If the menu function is activated, the display will return to the menu a few seconds after you have changed the volume.
Selecting an Audio Source
To select an audio source, press the source button (7) until the required internal or external audio source is shown in the
display:
– DAB/DAB2: Digital radio via DAB+ (GPB 18V‑2 SC),
– FM/FM2: Analogue radio via FM,
– AUX: External audio source (e.g. smartphone) via the 3.5‑mm socket AUX IN (24) in the connector compartment (15),
– ****: External audio source (e.g. smartphone) via the Bluetooth® connection.

The current audio source can be seen on the audio source indicator (b) or Bluetooth® indicator (a).
The audio sources DAB and DAB2 (GPB 18V‑2 SC), as well as FM and FM2, do not differ in their functionality; they offer only additional preset spaces.
Setting/saving DAB+ radio stations (GPB 18V‑2 SC) To select the audio source DAB+ radio stations, press the source button (7) until DAB or DAB2 appears on the audio source indicator (b).
After a short initialization, the last set radio station will be played back.
Each station name appears on the top line of the multi-function indicator (k). The additional information shown on the bottom line of the multi-function indicator can be set with the menu function.
–To switch the station, turn the source button (7) until the required station is shown in the display. Press the source button (7) to confirm the selection. The radio will switch to the selected station. Alternatively, you can press the seek button (scan down) (10) or the seek button (scan up) (9) to switch the station. The radio will switch to the next available station (in alphabetical order, either descending or ascending).
– To save a set station, press the reset button (5) of the required storage space until the number of the storage space appears in the storage space indicator (c). If the four storage spaces of the DAB audio source are occupied, then switch to the DAB2 audio source, in which four further storage spaces are available, by pressing the source button (7). Please note that you must reset the
required station after switching to save the change.
–To start playback of a saved station, briefly press one of the preset buttons (5). The number of storage spaces will appear on the storage space indicator (c). If required, switch between audio sources DAB and DAB2 by pressing the source button (7), to allow you to go back to all saved stations.

Note: In the event of reception problems, you can manually start the DAB+ station search. To do this, either select <Auto  Scan> from the menu or press the seek button (scan down) (10) and the seek button (scan up) (9) simultaneously. After the station search is complete, four stations will be saved in preset spaces 1 to 4. Stations that have already been saved will be overwritten here. If no DAB+ radio stations can be found, <No DAB Station – Please Auto Scan> will appear on the multi-function indicator (k).
Setting/Saving FM Radio Stations
To select the audio source FM radio stations, press the source button  (7) until FM or FM2 appears on the audio source indicator (b). GPB 18V‑2 C: The frequency of the current station will appear on the radio frequency indicator (d). GPB 18V-2 SC: The frequency of each current station will appear on the top line of the multi-function indicator (k). The additional information shown on the bottom line of the multifunction indicator can be set with the menu function.
If there is sufficiently good reception of a suitable signal, the radio will automatically switch to stereo reception, and the stereo
indicator (h) will appear in the display. The reception type can be changed to mono reception with the menu function.

– To set a specific station, turn the source button (7) (TUNE) until the required frequency or the required station is shown in the display.
– To search for the next station with high signal strength, briefly press the seek button (scan down) (10) or the seek button (scan up) (9). The next station found is shown in the display and played back.
– To search for all stations with high signal strength, press the seek button (scan down) (10) or the seek button (scan up) (9) for longer than half a second. Any station found is played back for 5 seconds, then the search is continued until the end of the frequency band. To cancel the station search, briefly press the seek button (scan down) (10) or the seek button (scan up) (9).
– To save a set station, press the reset button (5) of the required storage space until the number of the storage space appears in the storage space indicator (c). If the four storage spaces of the FM audio source are occupied, then switch to the FM2 audio source, in which four further storage spaces are available, by pressing the source button (7). Please note that you must reset the required station after switching to save the change.
– To automatically search for and save the stations with the best reception (AUTO STORE), press the seek button (scan down) (10) and the seek button (scan up) (9) simultaneously. The radio will check all receivable stations and save the four stations with the best reception in preset spaces 1 to 4. Please note that stations that have already been saved will be overwritten here where necessary. Once the search has finished, the station saved in preset space 1 will be played back.
– To start playback of a saved station, briefly press one of the preset buttons (5). The number of storage spaces will appear on the storage space indicator (c). If required, switch between audio sources FM and FM2 by pressing the source button (7), to allow you to go back to all saved stations.

Setting the Rod Antenna
The radio is supplied with a fitted rod antenna (6). For FM adio operation, point the rod antenna in the direction that enables the best reception.
If the reception is insufficient, position the radio at a different location that enables better reception.
Note: When operating the radio in the direct vicinity of radio- communication equipment or radio transceivers, or other electronic equipment, the radio reception can be subject to interference.

Connecting External Audio Sources via AUX
Remove the protective cap of the connector compartment (15) and insert the 3.5‑mm connector of theAUX cable (25) into the AUX IN socket (24). Connect the AUX cable to a suitable audio source. To playback, the AUX audio source, press the source button (7) until AUX appears on the audio source indicator (b).
After removing the AUX cable connector, reattach the protective cap of the connector compartment (15) to protect against dirt/debris.
If one of the preset buttons (5) is pressed during AUX operation, the radio will switch to the station that was saved in the last used radio operating mode.

Playing Back/Controlling External Audio Sources via Bluetooth®
To playback, an audio source (e.g. smartphone) via Bluetooth®, either press the source button (7) until the Bluetooth® indicator (a) appears in the display, or briefly press the Bluetooth® button (11) regardless of the current audio source.
Whilst a connection is being established or during the search for a connection, the Bluetooth® indicator (a) will flash.
GPB 18V‑2 SC: will appear on the multi-function indicator (k).
– If the radio has already been connected to an external audio source via Bluetooth® and if this audio source is available, a connection to this audio source will automatically be established.
– If no saved audio sources are available, the search process will start. Activate the new connection via the external audio source. For smartphones, that is generally possible via the settings in the Bluetooth® menu. The radio will appear as an available source under the name GPB 18V‑2 C XXXX or GPB 18V‑2 SC XXXX. Please observe the operating instructions for your audio source/ smartphone.
– If an available connection to an audio source via Bluetooth® needs to be ended and a new connection needs to be searched for (PAIRING), press the Bluetooth® button (11) for longer than 0.5 seconds. Activate the connection as described above.
As soon as an audio source is connected via Bluetooth®, the Bluetooth® indicator (a) will light up continuously. GPB 18V‑2 SC: The name of the device connected via Bluetooth® is displayed on the top line of the multi-function indicator (k). The text from the connected device appears on the bottom line.
If no connection can be established via Bluetooth®, the radio will switch off automatically after 19 minutes. The audio source connected via Bluetooth® can also be controlled via the radio:
– To select a track and to start playback, briefly press the seek button (scan up) (9) or the seek button (scan down) (10) until the required track has been reached. Playback of the selected track is started automatically.
– To interrupt playback, press the mute button (8). The pause indicator (f) will appear in the display.
– To continue playback, press the mute button (8) again, change the volume via the on/off button (2) or press the seek (scan up) button (9) or the seek (scan down) button (10).
– To fast-forward or rewind within a track, press and hold the seek (scan up) button (9) or the seek (scan down) button (10) until the required place in the track has been reached.
If one of the preset buttons (5) is pressed during operation via Bluetooth®, the radio will switch to the station that was saved in the last used radio operating mode.
Playback with True Wireless Stereo (with Bluetooth®audio source)
If an audio source is played back via Bluetooth®, the true wireless stereo (TWS) function can be activated. Two radios (either GPB 18V‑2 C or GPB 18V‑2 SC) can be used as righthand and left-hand speakers for the same playback.
Activating the true wireless stereo function:
– One of the two radios must already be connected to the audio source via Bluetooth®.
– Selecting the radio as the right-hand speaker: Select from the menu →