1. Introduction
Thank you for choosing the Energy Sistem TunerGo Radio. This portable FM radio offers a compact design, Bluetooth connectivity, a rechargeable battery, and a 5W speaker for an enhanced audio experience. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your device.

Figure 1.1: Front view of the Energy Sistem TunerGo Radio, showcasing its compact design and display.
2. What's in the Box
Please check the contents of your package. If any items are missing or damaged, contact customer support.
- TunerGo Radio
- USB-USB Type-C charging cable
3. Product Features
- Portable FM Radio: Enjoy your favorite FM stations on the go.
- Bluetooth Connectivity: Stream music wirelessly from your smartphone or other Bluetooth-enabled devices.
- Rechargeable Battery: Provides up to 10 hours of continuous playback.
- 3.5mm Minijack Output: Connect headphones for private listening.
- Optimized Internal Antenna: Designed to reduce interference and improve signal reception.
- 5W Speaker: Delivers clear and powerful audio.
- USB and MicroSD Playback: Directly play audio files from USB drives or microSD cards.
- 10 Preset Stations: Store your favorite FM stations for quick access.
4. Controls and Ports

Figure 4.1: Front panel controls including display, speaker, mode button, navigation, play/pause, and numeric keys.

Figure 4.2: Side view showing the USB Type-C charging port, USB-A port, microSD card slot, and 3.5mm headphone jack.
Front Panel Controls:
- Display: Shows current mode, frequency, track information, and battery status.
- M (Mode) Button: Switches between FM Radio, Bluetooth, USB, and MicroSD modes.
- Up/Down Arrows: Navigate menus, change frequency, or skip tracks.
- Play/Pause Button: Plays or pauses audio, confirms selections.
- Numeric Keys (1-10): Directly select FM presets or input numbers.
Side Ports:
- USB Type-C Port: For charging the device.
- USB-A Port: For connecting USB drives for audio playback.
- MicroSD Card Slot: For inserting microSD cards for audio playback.
- 3.5mm Headphone Jack: For connecting wired headphones.
- Volume Knob: Located on the top right, controls the audio output level.
- Power Switch: Located on the top right, turns the device ON/OFF.
5. Setup
5.1 Initial Charging
- Connect the supplied USB Type-C charging cable to the USB Type-C port on the side of the radio.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The battery indicator on the display will show charging status. A full charge takes approximately 12 hours.
- Once fully charged, disconnect the charging cable.
5.2 Powering On/Off
- To power on the radio, slide the power switch (located on the top right) to the 'ON' position.
- To power off the radio, slide the power switch to the 'OFF' position.
6. Operating Instructions
6.1 FM Radio Operation
- Power on the device. If not already in FM mode, press the M (Mode) button until 'FM' appears on the display.
- Automatic Station Scan: Press and hold the Play/Pause button to initiate an automatic scan for FM stations. The radio will scan and save available stations as presets (up to 10).
- Manual Tuning: Use the Up/Down Arrow buttons to fine-tune the frequency.
- Selecting Presets: Use the numeric keys (1-10) to directly select a saved preset station.
- Adjust the volume using the volume knob.
6.2 Bluetooth Mode
- Power on the device. Press the M (Mode) button until 'BLUE' or 'Bluetooth' appears on the display, indicating Bluetooth pairing mode.
- On your smartphone or Bluetooth-enabled device, enable Bluetooth and search for available devices.
- Select 'Energy Sistem TunerGo' from the list of devices.
- Once paired, you will hear a confirmation sound, and the display will indicate a successful connection.
- You can now play audio from your connected device through the TunerGo Radio. Use the radio's Play/Pause and Up/Down Arrow buttons to control playback, or control it directly from your source device.
6.3 USB / MicroSD Playback
- Power on the device.
- Insert a USB drive into the USB-A port or a microSD card into the microSD card slot. The radio will automatically switch to the corresponding mode (USB or TF/MicroSD) and begin playing audio files.
- If it does not switch automatically, press the M (Mode) button until the correct mode is displayed.
- Use the Play/Pause button to play or pause tracks.
- Use the Up/Down Arrow buttons to skip to the previous or next track.
6.4 Headphone Use
- To listen privately, plug your 3.5mm headphones into the headphone jack on the side of the radio.
- The internal speaker will automatically mute when headphones are connected.
- Adjust the volume using the volume knob.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the radio's surface. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use.
- Water Exposure: This device is not waterproof. Avoid exposure to water or high humidity.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not turn on. | Battery is discharged. | Charge the radio using the USB Type-C cable. |
| Poor FM reception. | Weak signal or interference. | Move the radio to a different location, away from electronic devices that may cause interference. Perform an automatic scan again. |
| No sound from speaker/headphones. | Volume is too low or muted. Incorrect mode selected. | Increase the volume using the volume knob. Ensure the correct mode (FM, Bluetooth, USB, MicroSD) is selected. Check headphone connection. |
| Bluetooth device cannot connect. | Radio not in pairing mode. Device too far. | Ensure the radio is in Bluetooth mode and 'BLUE' is displayed. Keep the devices within 10 meters (33 feet). Try unpairing and re-pairing the device. |
| USB/MicroSD playback not working. | Unsupported file format. Corrupted files. Incorrect mode. | Ensure audio files are in a supported format (e.g., MP3). Check if the files are corrupted. Ensure the radio is in USB or MicroSD mode. |
9. Specifications
- Model Name: TunerGo Radio
- Brand: Energy Sistem
- Dimensions: 2.8 x 9.8 x 6 cm
- Weight: 132 g
- Battery Type: Lithium Ion (AA battery included for initial use, rechargeable battery integrated)
- Average Battery Life: 10 hours (playback)
- Charging Time: Approximately 12 hours
- Connectivity: Bluetooth, USB, MicroSD
- Tuner Technology: FM
- Speaker Output: 5W
- Headphone Output: 3.5mm Minijack
- Material: Plastic
10. Warranty and Support
The Energy Sistem TunerGo Radio comes with a special 36-month warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product's quality and performance.
For any inquiries, technical assistance, or warranty claims, please contact Energy Sistem customer support. You can find contact information on the official Energy Sistem website or through your retailer.
Please retain your proof of purchase for warranty validation.