Retekess TR112 Multi-band Ham Radio User Manual

1. Introduction

The Retekess TR112 is a versatile multi-band portable radio designed for enthusiasts and emergency preparedness. It features a wide range of frequency bands including FM, VHF, AM, SW, WB, and AIR, along with modern functionalities like Bluetooth connectivity, TF card playback, and APP control. This manual provides detailed instructions for setting up, operating, and maintaining your TR112 radio.

Figure 1: Retekess TR112 Multi-band Ham Radio

2. Package Contents

Before you begin, please check the package contents to ensure all items are present:

• 1 x Retekess TR112 Multi-band Ham Radio
• 1 x Strap
• 1 x Small screwdriver
• 1 x USB Type-C charging cable
• 1 x User Manual (English, German, French, Italian, Spanish, Russian)
• 1 x APP Operation Manual

Figure 2: Package Details

3. Setup

3.1. Battery Installation and Charging

The TR112 radio comes with a built-in 1600mAh 3.7V non-detachable rechargeable lithium battery. Before first use, ensure the battery is fully charged.

1. Locate the Type-C charging port on the side of the radio.
2. Connect the provided USB Type-C charging cable to the radio and a compatible 5V DC power source (e.g., USB wall adapter, computer USB port).
3. The charging indicator on the radio will show charging status. A full charge typically takes 3-4 hours.
4. Once fully charged, the radio provides approximately 8-10 hours of continuous operation.

Figure 3: Rechargeable Battery Information

Figure 4: Type-C Charging Port

3.2. APP Installation (Optional)

The TR112 supports APP control for enhanced functionality. Follow these steps to install the companion application:

• For Android devices: Scan the QR code provided in the included APP Instruction Manual. If you encounter issues, contact support for the APK installation package.
• For iOS devices: Go to the App Store and search for "Radio-CT" to download the application.

Figure 5: APP Control Interface

4. Operating Instructions

4.1. Power On/Off

Press and hold the POWER button (usually located near the bottom left of the control panel) to turn the radio on or off.

4.2. Band Selection

The TR112 supports multiple frequency bands. Press the BAND button to cycle through the available bands: FM, VHF, AM, SW, WB, and AIR.

Figure 6: Multi-band Airband Radio

4.3. Tuning and Station Search

The radio offers several methods for tuning to stations:

• Manual Tuning: Use the large Manual Tune jog dial or the smaller mechanical rotary knob for precise frequency adjustment.
• Digital Tuning: Use the TUNE+ and TUNE- buttons for step-by-step frequency changes.
• Automatic Search: The radio supports fully automatic channel search to find available stations.
• APP Control: Use the companion APP for digital key frequency selection and more accurate digital FM tuning via Bluetooth.

Figure 7: Jog Shuttle and Mechanical Rotary Knob

4.4. Storing and Accessing Stations

The TR112 can store up to 995 channels in total, with 199 stations per band.

1. Tune to your desired station.
2. Press the MEMO button to save the current station. Follow on-screen prompts to select a memory slot.
3. To recall a stored station, use the MEMO button and navigation controls to browse through your saved stations.

Figure 8: Search and Store Stations

4.5. Volume Control

Use the VOL+ and VOL- buttons to adjust the audio volume.

4.6. Music Player (Bluetooth & TF Card)

The TR112 can function as a music player via Bluetooth or TF card.

• Bluetooth Mode: Press the BT button to enter Bluetooth mode. Pair with your Bluetooth-enabled device (e.g., smartphone). The radio supports Bluetooth 5.0 with a range of up to 20m/66ft.
• TF Card Mode: Insert a TF card (up to 256G) loaded with MP3, WMA, WAV, APE, or FLAC audio files into the designated slot. The radio will automatically detect and play the music.

Figure 9: Music Player Functionality

4.7. Alarm Clock and Sleep Timer

The radio includes an alarm clock and a sleep timer function.

• Alarm Clock: Set an alarm to wake up to your favorite station or a buzzer sound. Refer to the APP Operation Manual for detailed alarm setup instructions.
• Sleep Timer: Activate the sleep timer (0-90 minutes) to automatically turn off the radio after a set period, allowing you to fall asleep while listening.

Figure 10: Alarm Clock and Sleep Timer

4.8. SOS Alarm and Flashlight

For emergency situations, the TR112 is equipped with an SOS alarm and a flashlight.

• SOS Alarm: Press the SOS button (usually located near the top left) to activate an emergency alarm sound.
• Flashlight: The radio features a built-in flashlight for outdoor emergency lighting. Activate it by pressing the LIGHT button.

Figure 11: SOS Alarm and Flashlight

4.9. Marquee Design

In playback mode, you can activate the marquee lighting feature for an enhanced visual experience. Refer to the APP Operation Manual for specific controls.

Figure 12: Marquee Design

4.10. External Speaker Functionality

The Type-C port can also be used to connect the radio to a computer, allowing the radio to function as an external speaker for audio input from the computer.

Figure 13: External Speaker via Type-C

4.11. DSP Digital Technology

The TR112 incorporates DSP (Digital Signal Processing) digital demodulation radio chip technology. This improves radio sensitivity, selectivity, signal-to-noise ratio, and anti-interference capabilities by digitally converting analog FM/AM radio signals.

Figure 14: DSP Digital Technology

4.12. Video Demonstration

5. Maintenance

To ensure the longevity and optimal performance of your Retekess TR112 radio, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the radio. Do not use abrasive cleaners, solvents, or strong chemicals, as these may damage the finish or internal components.
• 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: Although the battery is non-detachable, avoid fully discharging it frequently. Recharge the radio regularly, even if not in active use, to maintain battery health.
• Antenna: Handle the telescopic antenna with care to prevent bending or breaking. Extend it fully for optimal reception.

6. Troubleshooting

If you encounter any issues with your TR112 radio, refer to the following common troubleshooting steps:

• No Power: Ensure the battery is charged. Connect the radio to a power source using the Type-C cable and allow it to charge for at least 30 minutes before attempting to power on again.
• Poor Reception: Extend the telescopic antenna fully. Try repositioning the radio or moving to an open area. For shortwave (SW) bands, external antenna connections might improve reception if available (though not explicitly mentioned for TR112, it's a general radio tip).
• Cannot Tune to Specific Station: Use both the jog dial and the digital tuning buttons for fine adjustments. If using the APP, ensure Bluetooth is connected and the correct frequency is entered.
• Bluetooth Pairing Issues: Ensure the radio is in Bluetooth mode. Turn off and on Bluetooth on both the radio and your device. Make sure the radio is not already paired with another device.
• TF Card Playback Problems: Ensure the TF card is inserted correctly and contains supported audio formats (MP3, WMA, WAV, APE, FLAC). Check if the card is corrupted or full.
• APP Connection Issues: Verify Bluetooth is enabled and paired. Ensure the APP is the correct version and updated. Restart both the radio and your smartphone.

If the problem persists, please refer to the Warranty/Support section for further assistance.

7. Specifications

Detailed technical specifications for the Retekess TR112 radio:

8. User Tips

Here are some helpful tips from other users to enhance your experience with the Retekess TR112:

• For precise tuning, utilize both the physical jog dial and the digital input options available through the APP.
• When trying to tune to a very specific station, especially on digital FM, connecting via Bluetooth to your phone and using the APP's numerical input can provide greater accuracy than manual knob tuning alone.
• Keep the APP Instruction Manual handy for quick reference on advanced APP controls and alarm settings.
• The SOS alarm and flashlight are excellent emergency features; familiarize yourself with their activation before needing them.

9. Warranty and Support

Retekess products are designed for reliability and performance. For any technical assistance, warranty claims, or support inquiries, please contact Retekess customer service through their official channels. Keep your purchase receipt as proof of purchase for warranty purposes.