1. Introduction
The Zastone M7 is a high-performance dual-band two-way radio designed for reliable communication across various environments. Featuring a robust design, 5W output power, and 250 programmable channels, it offers versatile communication options for both amateur and professional users. This manual provides essential information for the safe and efficient operation of your Zastone M7 walkie talkie.


2. Package Contents
Please check the package for the following items:
- Zastone M7 Walkie Talkie Unit
- Antenna
- Lithium-Ion Battery (2600mAh)
- Desktop Charger
- Power Adapter
- Belt Clip
- User Manual (this document)

3. Setup
3.1 Battery Installation
- Align the battery pack with the grooves on the back of the radio.
- Slide the battery pack upwards until it clicks into place.
- To remove, press the release latch (if present) and slide the battery downwards.

3.2 Antenna Attachment
- Screw the antenna into the connector on the top of the radio clockwise until it is firmly seated.
- Do not overtighten.

3.3 Initial Charging
- Place the radio (with battery installed) into the desktop charger.
- Connect the power adapter to the desktop charger and plug it into a power outlet.
- The charging indicator will show the charging status. Charge fully before first use (approximately 4-5 hours).
4. Operating Instructions
4.1 Power On/Off and Volume Control
- Rotate the top-left knob clockwise to power on the radio and adjust the volume.
- Rotate counter-clockwise until a 'click' is heard to power off.
4.2 Channel Selection and Frequency Modes
The Zastone M7 supports three working modes:
- VFO Mode: Allows direct frequency input and saving channels. Use the V/M button to switch to VFO mode.
- Channels + Frequency Mode: Displays both the frequency saved in channels and the channel number. Select channels using the Up/Down arrow buttons.
- Channels Mode: Displays saved channel numbers. Select channels using the Up/Down arrow buttons.


4.3 Transmitting and Receiving
- To transmit, press and hold the Push-To-Talk (PTT) button on the side of the radio. Speak clearly into the microphone.
- Release the PTT button to receive.
4.4 VOX Function (Voice Operated Exchange)
The VOX function allows for hands-free transmission. When enabled, the radio will automatically transmit when it detects your voice.
- Adjust VOX sensitivity (1-9 levels) via the menu to suit your environment.

4.5 Scramble Function
The scramble function encrypts your voice before transmitting to prevent eavesdropping on the same frequency. If a channel has this function enabled, it will automatically scramble when you switch to it.

4.6 Squelch Adjustment
Squelch levels (0-9) can be adjusted to filter out weak signals and background noise, improving audio clarity.
4.7 Time Out Timer (TOT)
The Time Out Timer (TOT) prevents accidental continuous transmission. If transmission exceeds the set time (15-270 seconds), the radio will stop transmitting.

5. Maintenance
5.1 Battery Care
- Always use the original charger and battery.
- Do not short-circuit the battery terminals.
- Do not expose the battery to fire or extreme temperatures.
- If the battery is not used for a long period, charge it fully and store it in a cool, dry place.
- The radio supports a low battery alarm feature (time interval: 0-500 seconds).

5.2 Cleaning
- Clean the radio surface with a soft, damp cloth.
- Do not use harsh chemicals or abrasive cleaners.
- Ensure the radio is dry before use.
5.3 General Care
- Avoid dropping the radio or subjecting it to strong impacts.
- Do not disassemble the radio; refer to qualified personnel for repairs.
- Keep the radio away from dust, moisture, and direct sunlight.
6. Troubleshooting
- No Power: Check if the battery is properly installed and charged. Ensure the power/volume knob is turned on.
- Cannot Transmit or Receive: Verify that the frequency/channel is correctly set and matches the other radio. Check antenna connection. Ensure the battery is not depleted.
- Poor Audio Quality: Adjust the squelch level. Check for obstructions between radios. Ensure the microphone and speaker are clear of debris.
- Short Communication Range: Ensure the antenna is securely attached. Check for environmental obstructions (buildings, hills). Low battery can also affect range.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | M7 |
| Brand Name | Zastone (also compatible with BAOFENG) |
| Frequency Range | 136-174MHz, 400-480MHz |
| Output Power | 5W |
| Channels Quantity | 250 |
| Battery Capacity | 7.4V---2600mAh |
| Working Voltage | DC7.4V |
| Working Temperature | -20℃ to +50℃ |
| Modulation System | 6KΦF3E(Wide)/1kΦf3E(Narrow) |
| Earphone Jack | K type |
| Weight | 500g |
| Dimensions (H*W*D) | 110mm*63mm*35mm |
| Water Resistance | IP45 |
| Maximum Range | 5km-10km |
| Material | Plastic |
| Display | Yes |
| Certification | CE, FCC, RoHS |
| Special Feature | DSP digital demodulation |

8. Warranty and Support
The Zastone M7 Walkie Talkie is certified with CE, FCC, and RoHS standards, ensuring compliance with international safety and environmental regulations. For technical support or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase for any warranty claims.
9. User Tips
- Optimal Range: For best communication range, ensure a clear line of sight between radios. Obstacles like buildings and dense foliage can significantly reduce range.
- Battery Life: To maximize battery life, consider using lower power settings when communicating over short distances.
- Channel Management: Organize your channels logically (e.g., by group or activity) for quick access and efficient communication.
- VOX Usage: When using VOX, test the sensitivity in your environment to avoid accidental transmissions or missed speech.
- Antenna Care: Always ensure the antenna is securely attached before operating the radio to prevent damage and ensure optimal performance.