Tecsun M-601 Rechargeable Digital Portable FM Radio, Audio Recorder & Player User Manual

1. Introduction

This manual provides detailed instructions for the operation and maintenance of your Tecsun M-601 portable device. The M-601 integrates an FM radio, audio player, and digital recorder, featuring Bluetooth 5.0 connectivity and a USB-C input. Please read this manual thoroughly before use to ensure proper functionality and longevity of the device.

2. Safety Information

• Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
• Avoid dropping or subjecting the device to strong impacts.
• Do not disassemble or attempt to repair the device yourself. Contact qualified service personnel.
• Use only the specified charging cable and power adapter (DC 5V, 1000mA).
• Keep the device away from water and other liquids.
• Dispose of batteries according to local regulations.

3. Package Contents

Verify that all items are present in the package:

• Tecsun M-601 Unit
• USB-C Data/Charging Cable
• English User Manual

4. Product Overview

Familiarize yourself with the various parts and controls of your Tecsun M-601.

Figure 4.1: Front Panel Controls and Display
This image shows the front of the Tecsun M-601, highlighting the speaker grille on the left, the digital display in the center, and various control buttons on the right. Key buttons include Power, FM, SD, BT, Display, Rec, Mem, Alarm, Time, Volume Up/Down, and Play/Pause/Skip controls.

Figure 4.2: Right Side Panel
This image displays the right side of the Tecsun M-601, featuring the rotary tuning knob at the top, a 3.5mm headphone jack, a USB-C port for charging and computer audio input, and a wrist strap attachment point.

Figure 4.3: Top Edge with Micro SD Card Slot
This image shows the top edge of the Tecsun M-601, clearly indicating the slot for a Micro SD card, which is used for audio playback and recording storage.

4.1. Controls and Ports

• Power Button (⏻): Press and hold to power on/off.
• FM Button: Switches to FM radio mode.
• SD Button: Switches to Micro SD card playback mode.
• BT Button: Switches to Bluetooth mode.
• Display Button: Toggles display information.
• REC Button (●): Initiates recording.
• MEM Button: Accesses memory functions for FM stations.
• ALARM Button: Sets and activates the alarm.
• TIME Button: Sets the current time.
• Volume Up/Down (VOL +/-): Adjusts audio volume.
• Play/Pause/Skip Buttons: Controls audio playback (play, pause, next track, previous track).
• Tuning Knob: Used for manual tuning in FM mode.
• USB-C Port: For charging and external audio input.
• Headphone Jack: For private listening.
• Micro SD Card Slot: For inserting a Micro SD card (up to 128GB).

5. Setup

5.1. Charging the Battery

The Tecsun M-601 is powered by a built-in 3.7V / 2500mAh Li-ion battery. Before first use, fully charge the device.

1. Connect the provided USB-C charging cable to the USB-C port on the side of the M-601.
2. Connect the other end of the USB-C cable to a standard USB power adapter (DC 5V, 1000mA, not included) or a computer's USB port.
3. The charging indicator on the display will show charging status. It will typically turn off or change color when fully charged.

Note: The device can also be powered directly via the USB-C connection without a battery, or while the battery is charging.

5.2. Inserting a Micro SD Card

To use the audio player or recording functions, a Micro SD card (not included) is required.

1. Locate the Micro SD card slot on the top edge of the device (refer to Figure 4.3).
2. Gently insert the Micro SD card into the slot with the gold contacts facing down until it clicks into place.
3. To remove, gently push the card inward until it clicks, then release, and it will eject.

Note: The M-601 supports Micro SD cards up to 128GB.

6. Operating Instructions

6.1. Power On/Off

• To Power On: Press and hold the Power button (⏻) for approximately 2 seconds.
• To Power Off: Press and hold the Power button (⏻) for approximately 2 seconds.

6.2. FM Radio Operation

1. Enter FM Mode: Press the FM button. The display will show the current FM frequency.
2. Manual Tuning: Rotate the Tuning Knob on the right side of the device to manually adjust the frequency.
3. Automatic Tuning Storage (ATS): Press and hold the FM button to initiate ATS. The radio will scan and automatically save available FM stations to memory.
4. Recalling Stored Stations: Press the MEM button, then use the Play/Pause/Skip buttons to navigate through stored stations.
5. Setting Favorite Station: The manual mentions 1 favorite station. Refer to the on-screen prompts or specific button combinations for this feature, typically involving the MEM button and a long press on a number or play button.
6. FM Frequency Range Selection: The M-601 supports multiple FM ranges (64-108 MHz, 76-108 MHz, 87-108 MHz, 88-108 MHz). This setting is usually found in a system menu or by a specific button combination (e.g., long press FM button while off, or a dedicated switch). Consult the device's display for options.

6.3. Bluetooth Operation

The M-601 features Bluetooth 5.0 for wireless audio streaming.

1. Enter Bluetooth Mode: Press the BT button. The display will show "BT" or a Bluetooth icon, indicating it's ready for pairing.
2. Pairing: On your Bluetooth-enabled device (e.g., smartphone), search for available Bluetooth devices. Select "TECSUN M-601" from the list. Once connected, the device will confirm pairing.
3. Playback: Play audio on your connected device. The sound will be streamed through the M-601's speaker or connected headphones. Use the M-601's Play/Pause/Skip buttons to control playback.

6.4. Audio Player Operation (Micro SD Card)

Ensure a Micro SD card with supported audio files is inserted (refer to Section 5.2).

1. Enter SD Card Mode: Press the SD button. The device will automatically start playing audio files from the Micro SD card.
2. Playback Controls: Use the Play/Pause/Skip buttons to control playback (play, pause, next track, previous track).
3. Supported Audio Formats: The M-601 supports 16bit / 44.1kHz FLAC, WAV, WMA, and MP3 files up to 320 kbps.

6.5. Recording Function

The M-601 can record audio from various sources to the inserted Micro SD card.

1. Initiate Recording: Press the REC button (●). The recording indicator will appear on the display.
2. Recording Sources:
   • Voice: Records mono MP3 (56kbps) via the built-in microphone.
   • Phone Call: Records mono WAV (32kbps) when connected via Bluetooth to a phone call.
   • Radio and Bluetooth (not phone): Records stereo MP3 (160kbps) from FM radio or Bluetooth audio streaming.
3. Stop Recording: Press the REC button again to stop recording. The recorded file will be saved to the Micro SD card.

6.6. Clock, Alarm, and Sleep Timer

• Setting Time: Press the TIME button. Use the Hour/Min buttons (often integrated with Volume or Skip buttons) to adjust the time, then press TIME again to confirm.
• Setting Alarm: Press the ALARM button. Follow the on-screen prompts to set the alarm time and activation status.
• Sleep Timer: This feature allows the radio to turn off automatically after a set period. Typically activated by a long press on the Power button or a dedicated Sleep button (if available). Refer to the display for sleep timer options.

6.7. USB-C Audio Input

The USB-C port can also function as an audio input from a computer.

1. Connect the M-601 to your computer using the USB-C cable.
2. The device may be recognized as an external audio output device by your computer. Select it as the playback device in your computer's sound settings.
3. Audio played on your computer will now output through the M-601.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. If storing the device for an extended period, charge it to approximately 50% every few months.
• Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.

8. Troubleshooting

9. Specifications

10. Warranty and Support

For warranty information and technical support, please refer to the official TECSUN website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.

Manufacturer: TECSUN

Model: M-601

Date First Available: February 14, 2024