1. Introduction
The Sangean MMR-88 is a robust and versatile AM/FM/Weather Alert emergency radio designed for reliability in various conditions. It features multiple power options, including hand crank, solar panel, and USB input, ensuring continuous operation. Equipped with an adjustable LED flashlight and an emergency siren, it provides essential functionalities for emergency preparedness. The integrated high-power 850mAh lithium-ion battery maintains radio function even during power outages.
2. Product Features
- Receives all 7 NOAA weather channels and reports.
- Features 19 random preset stations for quick access to preferred channels.
- Includes a DC out (5V / 0.3A) USB A type socket for charging mobile phones or MP3 players.
- Equipped with a DC in (5V / 0.5A) micro USB B type socket for charging the radio's internal battery.
- Can be powered by hand crank dynamo, solar panel, or DC input, offering multiple charging solutions.
- Public Alert-certified weather radio for critical weather updates.
- Micro USB-B input for convenient recharging of the lithium battery.
- Output wattage of 0.4 watts.
- Built-in adjustable LED flashlight for illumination.
- Integrated loud emergency buzzer (siren) for signaling.
3. Package Contents
Upon opening the package, ensure all the following items are present:
- Sangean MMR-88 Emergency Radio
- Owner's Manual
- USB to Mini USB Cable
4. Setup
4.1. Battery Installation and Initial Charge
The Sangean MMR-88 comes with a pre-installed lithium-ion battery. For optimal performance, it is recommended to fully charge the radio before first use.
- Locate the battery compartment on the rear of the radio.
- Ensure the battery is securely seated.
- Connect the supplied USB to Mini USB cable to the radio's Micro USB-B input port (DC IN 5V / 0.5A), located under the protective flap on the side.
- Connect the other end of the USB cable to a powered USB port (e.g., computer, USB wall adapter). The charge indicator light will illuminate.
- Allow the radio to charge until the charge indicator light changes or turns off, indicating a full charge.
4.2. Antenna Extension
For optimal FM and Weather band reception, extend the telescopic antenna fully. For AM reception, the internal ferrite antenna is used, and the telescopic antenna is not required.
Figure 1: Front view of the Sangean MMR-88 Emergency Radio, showing the display, controls, and speaker grille.
5. Operating Instructions
5.1. Power On/Off
Press the Power button (
) located on the top right of the front panel to turn the radio on or off.
5.2. Band Selection (AM/FM/Weather)
Press the BAND button to cycle through AM, FM, and Weather (WX) bands. The selected band will be displayed on the LCD screen.
5.3. Tuning and Volume Control
- Tuning: Use the Tuning Up (
) and Tuning Down () buttons to manually adjust the frequency. Press and hold to auto-scan for the next available station. - Volume: Use the VOL + and VOL - buttons to increase or decrease the audio volume.
5.4. Setting Presets
The radio allows for 19 preset stations (combined for AM/FM). To set a preset:
- Tune to the desired station.
- Press and hold the PRESET button until the preset number flashes on the display.
- Use the Tuning Up or Tuning Down buttons to select the desired preset number.
- Press the PRESET button again to confirm and save the station.
- To recall a preset, briefly press the PRESET button and then use the Tuning Up or Tuning Down buttons to select the desired preset.
5.5. Weather Alert Function
The MMR-88 is a Public Alert-certified weather radio. To activate the weather alert function:
- Ensure the radio is on the WX band.
- Press the WX ALERT button. The display will show "ALERT ON" or similar indication.
- When an official NOAA weather alert is broadcast, the radio will automatically switch on and emit a loud siren to notify you.
- To deactivate the alert, press the WX ALERT button again.
5.6. Flashlight and Siren Operation
The radio includes a built-in LED flashlight and an emergency siren.
- Flashlight: Press the dedicated flashlight button (usually located on the side or top) to turn the flashlight on. Some models may have multiple brightness settings or SOS flash modes, which can be cycled by pressing the button repeatedly.
- Siren: Press the Siren button (often labeled with a bell or alarm icon) to activate the emergency siren. Press it again to turn it off.
Figure 2: The Sangean MMR-88 radio with its telescopic antenna extended, ready for optimal reception.
5.7. Charging External Devices (Smartphone Charger)
The MMR-88 can provide emergency power to external devices via its USB output port.
- Locate the DC OUT (5V / 0.3A) USB A type socket under the protective flap on the side of the radio.
- Connect your device's USB charging cable to this port.
- The radio will begin charging your device. Note that the output is 0.3A, which may result in slower charging compared to standard wall chargers.
5.8. Charging the Radio (Hand Crank & Solar)
In addition to USB charging, the radio can be charged using its integrated hand crank and solar panel.
- Hand Crank: Unfold the hand crank handle located on the back of the radio. Rotate the handle clockwise or counter-clockwise at a steady pace to generate power. A few minutes of cranking can provide sufficient power for short periods of use.
- Solar Panel: Place the radio with its solar panel (located on the top surface) facing direct sunlight. The solar panel will slowly charge the internal battery. This method is ideal for maintaining charge over extended periods or for trickle charging.
Figure 3: The Sangean MMR-88 radio positioned outdoors, highlighting its solar charging capability.
6. Maintenance
- Cleaning: Wipe the radio with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: When storing for extended periods, ensure the battery is fully charged. Recharge the battery every 3-6 months to maintain its lifespan. Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: The internal lithium-ion battery is designed for long life. Avoid fully discharging the battery frequently. If the battery needs replacement, contact Sangean customer support or refer to the full owner's manual for instructions.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not power on. | Battery is depleted. | Charge the radio using the USB cable, hand crank, or solar panel. |
| Poor radio reception. | Antenna not extended (FM/WX); weak signal; interference. | Fully extend the telescopic antenna. Reposition the radio to a location with better signal. Avoid placing near electronic devices that may cause interference. |
| External device not charging. | Radio battery low; incorrect cable; device requires higher current. | Ensure the radio's battery is sufficiently charged. Use the correct USB cable for your device. Note that the radio's USB output is 0.3A, which may not be sufficient for all devices or for fast charging. |
| Weather Alert not activating. | Alert function off; no active alert in area; poor WX reception. | Ensure WX ALERT is turned ON. Verify that there is an active weather alert for your region. Check WX band reception and extend antenna. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | MMR-88 |
| Product Dimensions | 5.98 x 2.71 x 3.3 inches |
| Item Weight | 13.8 ounces |
| Power Source | Battery Powered, Solar, Handcrank |
| Battery Type | 1 Lithium Ion battery (included) |
| Radio Bands Supported | AM/FM/Weather (NOAA) |
| Tuner Technology | DSP Digital AM/FM/WX Tuner |
| USB Output | DC 5V / 0.3A (for charging external devices) |
| USB Input | DC 5V / 0.5A (for charging radio) |
| Special Feature | Public Alert Certified Weather Alert Radio, Built-in Flashlight, Siren |
| Manufacturer | Sangean America, Inc. |
| Country of Origin | China |
Figure 4: Dimensions of the Sangean MMR-88 radio for reference.
9. Warranty & Support
For detailed warranty information and customer support, please refer to the Owner's Manual included with your Sangean MMR-88 radio. You may also visit the official Sangean America, Inc. website for further assistance and contact information.
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Please handle with care and refer to the product's legal disclaimers.