1. Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Topsung M920 Walkie Talkies. Please read this manual thoroughly before using your devices to ensure optimal performance and safety.
Image: The Topsung M920 Walkie Talkies in a 3-pack, showcasing their design and included accessories like rechargeable batteries and a micro-USB charger.
2. Package Contents
Verify that all items are present in your package:
- 3 x Topsung M920 Walkie Talkies (Blue, Green, Red)
- 9 x 1000mAh NI-MH AA Rechargeable Batteries (3 per walkie talkie)
- 1 x Micro-USB Charging Cable (3-in-1)
- 1 x USB Power Adapter
- 3 x Adjustable Lanyards
- 1 x User Manual (this document)
Image: A visual representation of all items included in the Topsung M920 Walkie Talkie package.
3. Setup
3.1. Battery Installation
- Locate the battery compartment cover on the back of the walkie talkie.
- Push the clip on the battery cover downwards and slide the cover off.
- Insert 3 x 1000mAh NI-MH AA rechargeable batteries into the compartment, ensuring correct polarity (+/-).
- Replace the battery compartment cover by sliding it back into place until it clicks securely.
3.2. Charging the Batteries
The walkie talkies come with rechargeable batteries and a micro-USB charging cable for convenient charging. A full charge provides approximately 63 hours of standby time.
- Connect the micro-USB charging cable to the charging port located at the bottom of the walkie talkie.
- Connect the other end of the USB cable to the provided USB power adapter, a power bank, or a vehicle adapter.
- Plug the USB power adapter into a standard wall outlet.
- The battery indicator on the LCD screen will show charging status. Charging typically takes about 3 hours.
- Once fully charged, disconnect the walkie talkie from the charging cable.
Image: Detailed view of the charging process and battery compartment for the walkie talkies.
4. Operating Instructions
Image: Labeled diagram of the walkie talkie's components and controls.
4.1. Power On/Off
To power on or off the walkie talkie, press and hold the MENU/Power button located at the bottom center of the front panel.
4.2. Adjusting Volume
Use the Up (▲) and Down (▼) buttons to adjust the volume level from 1 to 8. The current volume level will be displayed on the LCD screen.
4.3. Push-to-Talk (PTT) Button
To transmit your voice, press and hold the PTT button on the left side of the walkie talkie. Speak clearly into the microphone. Release the PTT button to listen for a response.
4.4. Call Button
Press the CALL button to send an audible call tone to other walkie talkies on the same channel and privacy code. There are 10 selectable call tones.
4.5. Keypad Lock
To prevent accidental changes to settings, press and hold the CALL/Lock button for 2 seconds to lock the keypad. The lock icon will appear on the LCD. Repeat the action to unlock.
4.6. Channel Selection
Your walkie talkies have 22 FRS channels. To change the channel:
- Press the MENU button once. The channel number will flash.
- Use the Up (▲) or Down (▼) buttons to select your desired channel.
- Press PTT or MENU again to confirm and exit.
4.7. CTCSS/DCS Privacy Codes
The M920 supports 38 CTCSS (Continuous Tone-Coded Squelch System) and 98 DCS (Digitally Coded Squelch) privacy codes. These codes help filter out unwanted conversations on the same channel.
- Press the MENU button twice for CTCSS or three times for DCS. The code number will flash.
- Use the Up (▲) or Down (▼) buttons to select your desired code.
- Press PTT or MENU again to confirm and exit.
4.8. VOX (Voice Operated Exchange)
VOX allows for hands-free operation. When VOX is enabled, the walkie talkie will automatically transmit when it detects your voice.
- Press the MENU button until "VOX" appears on the display.
- Use the Up (▲) or Down (▼) buttons to select the VOX sensitivity level (LE1 to LE3, with LE3 being the most sensitive). You can also select "OF" to turn VOX off.
- Press PTT or MENU again to confirm and exit.
4.9. NOAA Weather Alert
The M920 features NOAA Weather Scan, which automatically scans through 25 available weather (WX) band channels and locks onto the strongest weather channel to alert you of severe weather updates. NOAA Weather Alert will sound an alarm if there is a risk of severe weather in your area.
- To activate Weather Scan, press and hold the SCAN/NOAA button.
- The radio will scan for active weather channels.
- To exit Weather Scan, press and hold the SCAN/NOAA button again.
Image: The walkie talkie highlighting its NOAA Weather Alert feature, useful for outdoor activities.
4.10. Roger Beep
The Roger Beep is an audible tone transmitted when you release the PTT button, signaling to other users that you have finished speaking.
- Press the MENU button until "RO" appears on the display.
- Use the Up (▲) or Down (▼) buttons to turn the Roger Beep "ON" or "OFF".
- Press PTT or MENU again to confirm and exit.
4.11. Video Demonstration: How to Use the Walkie Talkies
Video: A detailed demonstration by Topsung Technology on how to operate the walkie talkies, including navigating menus and using various features.
5. Range and Usage Environment
The effective range of your walkie talkies can vary significantly based on terrain and obstructions. For optimal performance, use in open areas with minimal interference.
- Mountain to Valley: Up to 16 miles (optimal conditions)
- Open Water: Up to 4 miles
- Neighborhood: Up to 1 mile
Image: Visual guide to the expected range of the walkie talkies in various outdoor settings.
6. Maintenance
6.1. Cleaning
Wipe the walkie talkie with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the device is dry before use or storage.
6.2. Battery Care
To prolong battery life, fully charge the batteries before first use. If storing the walkie talkies for an extended period, remove the batteries to prevent leakage.
6.3. Storage
Store the walkie talkies in a cool, dry place away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you experience issues with your Topsung M920 Walkie Talkies, refer to the common problems and solutions below. For more detailed troubleshooting, please consult the official Troubleshooting Guide (PDF).
| Problem | Possible Solution |
|---|---|
| No power | Ensure batteries are correctly installed and fully charged. Press and hold the Power button to turn on. |
| Cannot communicate with other radios | Verify all radios are on the same channel and privacy code (CTCSS/DCS). Check battery levels. Ensure no obstructions are blocking the signal. |
| Poor sound quality or static | Adjust volume. Move closer to the other radio. Check for interference from other electronic devices. Ensure antenna is not obstructed. |
| Keypad is unresponsive | The keypad may be locked. Press and hold the CALL/Lock button for 2 seconds to unlock. |
| VOX not activating | Adjust VOX sensitivity to a higher level (e.g., LE3). Ensure you are speaking clearly into the microphone. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | M920 |
| Brand | Topsung |
| Color | Blue & Green & Red |
| Number of Channels | 22 FRS Channels, 25 NOAA Weather Channels |
| Privacy Codes | 38 CTCSS, 98 DCS |
| Frequency Range | Approximately 400-512 MHz |
| Talking Range Maximum | Up to 3 Miles (actual range varies by terrain) |
| Battery Type | 3 x 1000mAh NI-MH AA Rechargeable Batteries (per radio) |
| Standby Time | Approx. 63 hours |
| Charging Time | Approx. 3 hours |
| Special Features | Keypad Lock, Long Range, NOAA Weather Alert, VOX, Roger Beep |
| Water Resistance Level | Waterproof |
| Item Weight | 1.41 pounds (for the pack) |
| Package Dimensions | 6.65 x 6.65 x 2.64 inches |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or contact Topsung customer service directly. Additional protection plans may be available for purchase separately.
You can also find more resources, including a detailed Instructions for Use (IFU) PDF, on the product's official support page.
