1. Introduction
The Maycall MC-978EX is a robust FRS (Family Radio Service) two-way radio designed for reliable communication in demanding environments. Featuring explosion-proof capabilities, noise cancellation, and a durable, waterproof design, it is suitable for various professional and recreational uses. This manual provides essential information for the safe and effective operation of your MC-978EX transceiver.
2. Product Features
- Explosion-proof signal and design (Mark: Ex ib IIC T4 Gb; Ex ib IIIC T130°C Db)
- IP67/IPX7 waterproof and dustproof rating (can be soaked for 48 hours in 1 meter water depth)
- One-key frequency matching for easy setup with other devices
- Intelligent power saving for extended battery life
- Clear sound quality with noise cancelling features
- High-power antenna for strong penetration and wide communication coverage
- Flame retardant, wear-resistant, and drop-resistant material
- Long-lasting lithium battery (up to 15 days standby)
3. Setup Guide
3.1. Unpacking and Initial Inspection
Carefully remove all components from the packaging. Inspect the transceiver and accessories for any signs of damage. If any items are missing or damaged, contact your vendor immediately.
3.2. Attaching the Antenna
- Align the antenna with the antenna connector on the top of the transceiver.
- Gently screw the antenna clockwise until it is firmly seated. Do not overtighten.
3.3. Battery Installation and Charging
- Ensure the transceiver is powered off.
- Align the battery pack with the battery compartment on the back of the transceiver.
- Slide the battery into place until it clicks securely.
- To charge, place the transceiver into the safety seat charging dock. The charging indicator will illuminate.
- The intelligent charging technology will automatically power off when fully charged to prevent overcharge.
3.4. Frequency Matching (One-Key Copy)
The MC-978EX supports one-key frequency matching for quick setup with other compatible devices.
- Ensure both transceivers are powered on and within close proximity.
- Activate the one-key frequency copy function on your MC-978EX (refer to device-specific button layout if not obvious).
- The device will automatically match frequencies within approximately 2 seconds.
- This feature eliminates tedious manual frequency modulation (FM) and is compatible with various brands.
4. Operating Instructions
4.1. Power On/Off and Volume Control
- Power On: Rotate the power/volume knob clockwise until you hear a click and the device powers on.
- Power Off: Rotate the power/volume knob counter-clockwise until you hear a click and the device powers off.
- Volume Adjustment: Rotate the power/volume knob to increase (clockwise) or decrease (counter-clockwise) the audio level.
4.2. Transmitting and Receiving
- Select Channel: Use the channel selector knob to choose your desired communication channel. Ensure all parties are on the same channel.
- Transmit: Press and hold the Push-To-Talk (PTT) button located on the side of the transceiver. Speak clearly into the microphone. Release the PTT button to listen.
- Receive: When the PTT button is not pressed, the transceiver is in receive mode.
4.3. Communication Range
The MC-978EX offers strong penetration and wide communication coverage. Typical ranges are:
- City: Up to 10 km
- Mountain: Up to 8 km
- Sea: Up to 30 km
- General Talk Range: 3-15 KM
4.4. Explosion-Proof and Waterproof Features
The MC-978EX is designed for use in hazardous environments, including public safety, fire service stations, pharmaceutical factories, coal mines, and other flammable places.
- Explosion-Proof Mark: Ex ib IIC T4 Gb; Ex ib IIIC T130°C Db. This indicates compliance with standards for intrinsic safety in explosive atmospheres.
- Water Resistance: IP67/IPX7 rated, meaning it is protected against dust ingress and can withstand immersion in water up to 1 meter for 48 hours. This makes it suitable for rainy day work and humid conditions.
5. Maintenance
5.1. Cleaning
- Wipe the transceiver with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- For stubborn dirt, a mild soap solution can be used, followed by wiping with a clean, damp cloth.
- Ensure all ports and connectors are dry before use or charging.
5.2. Battery Care
- Charge the battery fully before initial use.
- Avoid completely draining the battery regularly to prolong its lifespan.
- Store the transceiver and battery in a cool, dry place when not in use for extended periods.
5.3. General Care
- Despite its durable design, avoid unnecessary drops or impacts.
- Do not attempt to disassemble or modify the transceiver, as this will void the warranty and could compromise its explosion-proof and waterproof integrity.
6. Troubleshooting
This section addresses common issues you might encounter with your MC-978EX transceiver.
| Problem | Possible Cause | Solution |
|---|---|---|
| Transceiver does not power on. | Battery is low or not properly installed. | Charge the battery fully. Ensure the battery is securely attached. |
| Cannot hear other parties or low audio. | Volume is too low, or communication is out of range/on a different channel. | Increase volume. Ensure you are within range and on the correct channel. The MC-978EX has strong penetration to solve communication dead ends. |
| Cannot transmit or poor transmission quality. | Battery is low, antenna is loose, or interference. | Ensure battery is charged. Check antenna connection. Move to an area with less interference. |
| Difficulty matching frequencies with other devices. | Incorrect procedure or incompatible device. | Utilize the one-key frequency matching feature. Ensure the other device is compatible and ready for pairing. |
| Battery drains quickly. | Frequent transmission, high volume, or aging battery. | Reduce transmission time. Lower volume if possible. Ensure the battery is fully charged before use. The MC-978EX features intelligent power saving and a large capacity battery for long standby. |
7. Specifications
| Attribute | Specification |
|---|---|
| Model Number | MC-978EX |
| Brand Name | Maycall |
| Output Power | 3W |
| Frequency Range | 430-440MHz |
| Voltage | 3.7V |
| Battery Capacity | 2500mAh (2000-2500mAh range) |
| Storage Channel | 16 |
| Talk Range | 3-15 KM (City 10 km / Mountain 8 km / Sea 30 km) |
| Water Resistance Level | IP67 / IPX7 |
| Feature | Explosion Proof, Noise Cancelling |
| Explosion-Proof Mark | Ex ib IIC T4 Gb; Ex ib IIIC T130°C Db |
| Operating Language | English |
| Walkie Talkie Type | Analog walkie talkie |
| Frequency Type | FRS |
| Color | Bluish black |
| Size (without antenna) | 140x65x34mm |
| Origin | Mainland China, Fujian |
8. User Tips
- Optimal Range: For best communication clarity and range, try to maintain a clear line of sight. Obstacles like buildings and dense foliage can reduce effective range.
- Battery Preservation: Utilize the intelligent power-saving feature by turning off the device when not in active use. Fully charge the battery before critical operations.
- Quick Pairing: Take advantage of the one-key frequency copy function when setting up multiple units or pairing with compatible third-party radios to save time.
- Environmental Awareness: While the MC-978EX is explosion-proof and waterproof, always be aware of your surroundings and follow safety protocols, especially in hazardous environments.
- Clear Communication: Speak clearly and directly into the microphone, holding the transceiver a few inches from your mouth, for optimal noise cancellation and audio transmission.
9. Warranty and Support
Maycall (Quanzhou Mike Intercom Co., Ltd) has over 20 years of experience in two-way radio technology, holding numerous patents and employing senior engineers to ensure high-quality products.
For technical support, warranty claims, or any inquiries regarding your Maycall MC-978EX transceiver, please contact us:
- WhatsApp: +86 15580043427
- Email: 2589659452@qq.com
Please provide your model number (MC-978EX) and a detailed description of your issue when contacting support.
