TECSUN PL-320 Portable Full Band DSP Radio Receiver

1. Introduction

The TECSUN PL-320 is a compact and portable full-band digital signal processing (DSP) radio receiver designed for enthusiasts and casual listeners alike. It offers reception across FM, AM (Medium Wave), Shortwave (SW), and Longwave (LW) bands, providing a wide range of listening options. Featuring modern DSP technology, the PL-320 delivers enhanced listening sensitivity, selectivity, signal-to-noise ratio, and anti-interference capabilities. Its user-friendly interface and multiple tuning methods make it an ideal companion for home use or travel.

2. Key Features

• Full Band Reception: Capable of receiving FM, AM (MW), Shortwave (SW), and Longwave (LW) broadcasts.
• DSP Technology: Utilizes modern DSP digital demodulation technology for improved sensitivity, selectivity, signal-to-noise ratio, and anti-interference.
• Multiple Tuning Methods: Includes Enhanced Convenient Tuning (ETM+), Automatic Tuning Storage (ATS), manual search (VF/VM), and direct frequency input.
• Memory Storage: Stores up to 650 radio frequencies (100 LW, 150 MW, 300 SW, 100 FM).
• Favorite Station Shortcuts: Allows for quick access to frequently listened-to stations.
• Multifunctional Display: Shows working status, radio frequency, electric field strength, signal-to-noise ratio, and battery level.
• High-Quality Audio: Features a high-sensitivity speaker and supports FM stereo broadcasting via headphones.
• Dual Alarm Clock: Includes a dual alarm function with pre-stored frequencies.
• Sleep Timer: User-friendly power switcher function with an adjustable auto-shutdown timer (1-120 minutes).
• External Antenna Support: Equipped with a dedicated socket for external FM/HF antennas.
• Versatile Power Supply: Powered by a BL-5C lithium battery, rechargeable via USB Type-C.
• Compact and Portable: Designed for easy carrying with dimensions of 139 x 85 x 26 mm.

3. Package Contents

Upon opening your TECSUN PL-320 package, please ensure all the following items are present:

• TECSUN PL-320 Radio Receiver
• BL-5C Lithium Battery
• Stereo Headset
• USB Type-C Charging Cable
• Protective Sleeve
• User Manual (this document)

4. Initial Setup

4.1. Battery Installation

1. Locate the battery compartment on the back of the radio.
2. Open the battery compartment cover.
3. Insert the provided BL-5C lithium battery, ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.

4.2. Charging the Battery

The radio can be powered or charged via its USB Type-C port.

1. Connect the provided USB Type-C charging cable to the DC-IN 5V port on the side of the radio.
2. Connect the other end of the cable to a USB power adapter (not included) with a 5V output and current ≥ 500mA.
3. The display will indicate charging status. Ensure the battery is fully charged before first use for optimal performance.

4.3. Connecting Headphones and External Antenna

The radio features dedicated ports for audio output and enhanced reception.

• Headphones: Plug your stereo headset into the 32-150Ω headset interface on the side of the radio for private listening and FM stereo.
• External Antenna: For improved Shortwave (SW) and FM reception, connect an external antenna (not included) to the FM & SW ANTENNA port.

5. Operating Instructions

5.1. Power On/Off and Auto Shutdown

• Power On: Press the POWER button to turn the radio on.
• Power Off: Press and hold the POWER button to turn the radio off.
• Auto Shutdown Timer: The radio features a user-friendly power switcher function that allows you to set an automatic shutdown timer from 1 to 120 minutes. Refer to the on-screen menu or specific button combinations for setting this feature.

5.2. Band Selection

Press the FM/AM/SW/WM button repeatedly to cycle through the available frequency bands: FM, AM (MW), Shortwave (SW), and Longwave (LW).

5.3. Tuning Methods

The PL-320 offers several ways to find your desired stations:

• Enhanced Convenient Tuning (ETM+): This feature measures shortwave in hours and medium wave in 6 periods, making it more convenient to adjust the platform. ETM+ allows for efficient scanning and storage of stations based on time and band.
• Automatic Tuning Storage (ATS): Automatically scans and stores available stations within the current band.
• Manual Tuning (VF/VM):
  
  • VF (Variable Frequency): Manually tune the frequency using the tuning knob.
  • VM (Variable Memory): Manually browse through stored memory stations.
• Direct Frequency Input: Use the numeric keypad to directly enter the desired frequency.

5.4. Memory Functions

The radio can store up to 650 frequencies across all bands. You can also set special favorite radio shortcut keys for quick access to your most listened-to stations.

5.5. ETM Signal Threshold Adjustment

You can customize the signal threshold for ETM retrieval stations. This allows you to adjust the sensitivity based on listening needs, effectively filtering out strong, weak, or extremely weak stations for a clearer listening experience.

5.6. Alarm Clock Function

The PL-320 includes a dual alarm clock. You can set alarms to turn on the radio at a specific time, potentially to a pre-stored frequency. Consult the manual for detailed instructions on setting and managing alarms.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the radio's exterior. Do not use abrasive cleaners, solvents, or strong chemicals, as they may damage the finish.
• 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: If storing for a long time, remove the BL-5C battery to prevent leakage. Recharge the battery periodically to maintain its health.
• Water Exposure: This radio is not waterproof. Avoid exposing it to rain, moisture, or splashing liquids.

7. Troubleshooting

No Power / Radio Not Turning On:

Check if the BL-5C battery is correctly installed and charged. Connect the radio to a USB power source to see if it powers on.

Poor Reception / Static:

Extend the telescopic antenna fully. Try repositioning the radio. For SW/FM, connect an external antenna if available. Adjust the ETM signal threshold if using ETM tuning. Ensure you are within broadcast range for the selected band.

No Sound:

Check the volume level. If headphones are connected, ensure they are fully plugged in and functioning. Disconnect headphones to check the built-in speaker.

Display Not Working:

Ensure the radio has power. If the issue persists, try resetting the radio (if a reset button or procedure is available, otherwise remove and reinsert battery).

8. Specifications

8.1. Frequency Range and Tuning Step

8.2. Noise Limiting Sensitivity

8.3. Selectivity

8.4. Quiescent Current

9. User Tips

• Portability: The PL-320 is designed to be highly portable, making it easy to carry around for travel or outdoor activities.
• Battery Life: To maximize battery life, ensure the BL-5C lithium battery is fully charged before use. Consider carrying a portable USB power bank for extended listening sessions.
• Reception Improvement: For better reception, especially on Shortwave, try using the radio outdoors or near a window. Connecting an external antenna can significantly enhance signal quality.
• ETM Tuning: Experiment with the ETM signal threshold settings to find the optimal balance between receiving weak signals and filtering out interference in your specific listening environment.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact the retailer/manufacturer directly. Keep your purchase receipt as proof of purchase.