1. Introduction
Thank you for choosing the Maycall MC-528 FRS Two-Way Radio. This manual provides essential information for the safe and efficient operation of your new radios. The MC-528 is designed for reliable, long-range communication, featuring a durable build, a 1200mAh rechargeable battery, and hands-free operation with included earpieces. Please read this manual thoroughly before use and retain it for future reference.
2. Package Contents
Verify that all items listed below are included in your package:
- 4 x MC-528 Walkie Talkies
- 4 x 1200mAh Li-ion Batteries
- 4 x USB Charging Adapters
- 4 x USB Charging Bases
- 4 x Belt Clips
- 4 x Lanyards (String)
- 1 x User Manual
- 4 x Ear Hook Earpieces with Microphones
Figure 2.1: Contents of the Maycall MC-528 4-pack, including radios, batteries, chargers, belt clips, lanyards, and earpieces.
3. Product Overview
The Maycall MC-528 is a robust FRS two-way radio designed for clear and reliable communication in various environments. Key features include:
- License-Free Operation: Operates on FRS frequencies, requiring no license.
- Long Range Communication: Engineered for extended range and strong signal penetration.
- 1200mAh Rechargeable Battery: Provides up to 24 hours of work time and 30 days standby.
- Durable Construction: Built to withstand shocks and vibrations in demanding conditions.
- Clear Audio: Features a titanium-coated diaphragm loudspeaker for high-quality sound.
- Hands-Free Capable: Includes ear hook earpieces for convenient, hands-free use.
- Multiple Charging Options: USB charging base and adapter support various power sources.
Figure 3.1: The MC-528 offers long-range communication with high power and penetration, ensuring large coverage and call confidentiality.
Figure 3.2: The 1200 mAh battery provides 3-4 hours charging time, 24 hours work time, and 30 days standby time.
Figure 3.3: The MC-528 features durable industrial protection grade construction, designed to be shock and drop resistant.
Figure 3.4: The radio incorporates a titanium-coated diaphragm for a clear loudspeaker, ensuring high-quality audio communication.
4. Setup Guide
4.1 Battery Installation
- Ensure the radio is powered off.
- Locate the battery compartment cover on the back of the radio.
- Slide the cover downwards or unlatch it according to the radio's design.
- Insert the 1200mAh Li-ion battery, ensuring the contacts align correctly.
- Replace the battery compartment cover and secure it.
4.2 Charging the Battery
Before first use, fully charge the battery. The charging indicator will show the charging status.
- Connect the USB charging adapter to a power outlet.
- Connect the USB cable from the adapter to the charging base.
- Place the MC-528 radio into the charging base. Ensure the radio is seated correctly. The charging indicator light on the base will illuminate to show charging status (e.g., red for charging, green for fully charged).
- Charging typically takes 3-4 hours for a full charge.
Safety Note: The charging system includes overcharge, over-voltage, and short-circuit protection. It is not necessary to remove the back clip during charging.
Figure 4.1: The MC-528 can be charged using the provided USB charging base and adapter, or via other USB power sources like a computer or power bank.
4.3 Attaching the Belt Clip
Align the belt clip with the designated slots on the back of the radio and slide it upwards until it clicks into place. To remove, press the release tab and slide the clip downwards.
4.4 Connecting the Earpiece
The MC-528 comes with an ear hook earpiece for private and hands-free communication.
- Locate the earpiece jack on the side of the radio, usually covered by a rubber flap.
- Open the rubber flap and firmly insert the earpiece plug into the jack.
- Adjust the ear hook for a comfortable fit on either your left or right ear.
Figure 4.2: The included ear hook earpiece provides clear and secure communication, fitting comfortably on either ear.
5. Operating Instructions
5.1 Power On/Off
- To power on, rotate the Power/Volume Knob clockwise until you hear a click and the radio announces its channel.
- To power off, rotate the Power/Volume Knob counter-clockwise until you hear a click.
5.2 Volume Adjustment
After powering on, continue rotating the Power/Volume Knob clockwise to increase the volume, and counter-clockwise to decrease it.
5.3 Channel Selection
The MC-528 operates on 16 FRS channels. To communicate with another radio, both radios must be set to the same channel and CTCSS/DCS code (if applicable).
- Rotate the Channel Selector Knob (usually located next to the antenna) to select the desired channel. The radio will announce the selected channel number.
- Ensure all radios in your group are on the same channel for communication.
5.4 Transmitting and Receiving
- To Transmit: Press and hold the Push-to-Talk (PTT) button (located on the side of the radio). Speak clearly into the microphone (or earpiece microphone) at a normal volume. Release the PTT button when you finish speaking.
- To Receive: Ensure the PTT button is not pressed. The radio will automatically receive transmissions on the selected channel.
5.5 Hands-Free Operation (VOX)
The MC-528 supports VOX (Voice Operated Exchange) for hands-free transmission. When VOX is enabled, the radio will transmit automatically when it detects your voice, without needing to press the PTT button. Refer to the full user manual for detailed instructions on enabling and adjusting VOX sensitivity.
6. Maintenance
6.1 Battery Care
- Fully charge new batteries before first use.
- Avoid overcharging or completely draining the battery, as this can reduce its lifespan.
- If the radio will not be used for an extended period, remove the battery and store it in a cool, dry place.
- Use only Maycall approved batteries and chargers.
6.2 Cleaning
- Wipe the radio's surface with a soft, damp cloth.
- Do not use harsh chemicals, solvents, or abrasive cleaners.
- Ensure the earpiece jack cover is properly sealed when not in use to prevent dust and moisture ingress.
6.3 Storage
Store the radio in a cool, dry environment away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you experience issues with your Maycall MC-528 radio, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not power on. | Battery is low or not installed correctly. | Charge the battery or re-install it, ensuring proper contact. |
| Cannot transmit or receive. | Incorrect channel selected; PTT button not pressed/released; radio out of range. | Verify both radios are on the same channel. Press PTT to transmit, release to receive. Move closer to the other radio. |
| Poor sound quality or static. | Low battery; interference; radio too far apart; volume too low/high. | Charge battery. Move away from sources of interference. Adjust volume. Move closer to the other radio. |
| Limited communication range. | Obstructions (buildings, hills); environmental factors; low battery. | Move to an open area. Ensure battery is fully charged. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | MC-528 |
| Brand | Maycall |
| Frequency Range | FRS |
| Number of Channels | 16 |
| Battery Type | 1200mAh Li-ion (included) |
| Charging Time | 3-4 hours |
| Work Time | Up to 24 hours |
| Standby Time | Up to 30 days |
| Talking Range Maximum | 3 Miles (dependent on terrain and conditions) |
| Item Weight | 6.2 ounces (per radio) |
| Product Dimensions | 1.21 x 2.21 x 7.14 inches |
| Water Resistance Level | Waterproof |
| Special Feature | License free, Work out of the box |
9. Warranty and Support
Maycall provides the following warranty for the MC-528 FRS Two-Way Radios:
- Radio Body: 3-year warranty.
- Accessories: 1.5-year warranty.
- Return Policy: 45 days no-reason return.
Beyond the warranty period, Maycall offers maintenance services. Buyers are responsible for corresponding costs. For any questions, technical support, or warranty claims, please contact Maycall customer service through Amazon. We aim to respond within 12 hours.
