1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of the Yaesu MD-M1 Programmable Reference Microphone. Designed for discriminating Ham Radio Operators, the MD-M1 offers advanced audio customization and performance.
The MD-M1 integrates both Condenser and Dynamic microphone elements, allowing for versatile audio characteristics. It features a sophisticated Nine (9) Band Graphic Equalizer for precise frequency response adjustments, along with various other functions to optimize your audio transmission.
2. Product Overview
Figure 1: Yaesu MD-M1 Programmable Reference Microphone
This image displays the Yaesu MD-M1 Programmable Reference Microphone. It features a sleek, black design with a cylindrical microphone head mounted on an adjustable stand. The base of the microphone includes a control panel with an LCD screen and various buttons for programming and operation.
Key Features:
- Dual Microphone Elements: Combines Condenser and Dynamic elements for diverse audio profiles.
- Nine-Band Graphic Equalizer: Independent 9-band EQ (63Hz to 16kHz) for each microphone element.
- Frequency Response Memories: Two memories and a 'through' mode for each element's EQ settings.
- Independent Output Levels: Separate volume controls for Condenser and Dynamic elements.
- TBC (Treble Boost Cowling): Enhances voice response in the 1-1.5kHz range.
- Smooth PTT Key: Utilizes three Air-Cylinder Tubes and a contactless magnetic switch for comfortable, durable operation.
- Recording and Playback: 20-second capability to confirm audio tonality.
- LCD Display: Large Graphic Equalizer and Frequency Response Scope LCD with anti-reflective coating.
- Connectivity: Cannon-type (XLR) output plug connector.
- Additional Features: Headphone jack, Touch PTT keylock, Built-in low-cut filter, Audio output volume control for headphones.
3. Setup
3.1 Unpacking and Inspection
Carefully remove the MD-M1 microphone from its packaging. Inspect all components for any signs of damage. The package should contain the MD-M1 microphone unit.
3.2 Connecting the Microphone
- Ensure your radio or audio interface is powered off.
- Connect the MD-M1's Cannon-type (XLR) output plug to the corresponding input on your radio or audio equipment.
- Connect the microphone to a suitable power source. The MD-M1 operates via a corded electric connection.
- Position the microphone on a stable, flat surface. The microphone is designed as a table array unit.
The MD-M1 is compatible with various radio systems. Refer to your radio's manual for specific microphone input requirements.
4. Operating Instructions
4.1 Power On/Off
Locate the power switch on the microphone base. Press to turn the unit on or off. The LCD display will illuminate upon power-on.
4.2 Microphone Element Selection
The MD-M1 allows selection between the Condenser element, Dynamic element, or a combination of both. Use the dedicated buttons on the microphone base to cycle through these options. The selected element(s) will be indicated on the LCD.
4.3 Graphic Equalizer Adjustment
The 9-band graphic equalizer can be adjusted independently for each microphone element. Use the navigation buttons and control knob to select frequency bands (63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz, 16kHz) and adjust their gain levels. The LCD will display the current EQ curve.
4.3.1 EQ Memory Functions
Two frequency response memories (Memory 1, Memory 2) and a 'through' mode are available for each element. Use the one-touch buttons to switch between these presets. This allows for quick recall of preferred audio profiles.
4.4 Output Level Adjustment
Separate volume controls are provided for the Condenser and Dynamic elements. Adjust these controls to achieve the desired output level for each element, ensuring optimal modulation without overdriving your radio's input.
4.5 TBC (Treble Boost Cowling)
The supplied Treble Boost Cowling can be attached to the microphone head. This accessory enhances the voice response around the 1-1.5kHz range, creating a distinct tonal texture. Attach or remove the cowling as desired to suit your audio preference.
4.6 PTT (Push-To-Talk) Operation
The PTT key features a smooth action due to its Air-Cylinder Tubes and contactless magnetic switch. Press and hold the PTT key to transmit. Release to receive. The large red TX LED indicator will illuminate during transmission.
4.6.1 PTT Keylock
Engage the Touch PTT keylock to maintain continuous transmission without holding the PTT button. Press the keylock button again to disengage.
4.7 Recording and Playback
The MD-M1 includes a 20-second recording and playback function. Use this feature to record a short audio sample and play it back to evaluate your audio tonality and EQ settings. Refer to the specific buttons on the microphone base for record and playback controls.
4.8 Low-Cut Filter
A built-in low-cut filter is available to shape the low-frequency response, reducing unwanted bass or rumble. Activate or deactivate this filter via its dedicated control to optimize your audio for different operating conditions.
4.9 Headphone Use
Connect headphones to the headphone jack on the microphone base. Adjust the audio output volume control for headphones to monitor your transmitted audio or receive audio from your connected radio, if supported.
5. Maintenance
5.1 Cleaning
To clean the MD-M1, use a soft, dry cloth. For stubborn dirt, a slightly damp cloth with mild soap can be used, ensuring no moisture enters the microphone grille or control panel. Avoid abrasive cleaners or solvents, as these can damage the metal finish and electronic components.
5.2 Storage
When not in use for extended periods, store the microphone in a cool, dry place, away from direct sunlight and extreme temperatures. Protect it from dust and physical impact.
6. Troubleshooting
This section addresses common issues you might encounter with your MD-M1 microphone. If you experience problems not covered here, please contact Yaesu customer support.
- No Audio Output:
- Ensure the microphone is powered on.
- Verify all cables, especially the XLR connector, are securely attached.
- Check the output level controls for both microphone elements.
- Confirm the correct microphone element (Condenser, Dynamic, or combined) is selected.
- Ensure your radio or audio interface input is correctly configured and enabled.
- Distorted Audio:
- Adjust the output level controls to prevent overdriving the radio's input.
- Review the Graphic Equalizer settings; extreme boosts can cause distortion.
- Check for any physical obstructions or damage to the microphone grille.
- LCD Display Not Working:
- Ensure the microphone is powered on.
- If the issue persists, contact customer support.
- PTT Key Not Responding:
- Check if the PTT keylock is engaged. Disengage it if necessary.
- Ensure the microphone is properly connected and powered.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | YAESU |
| Model Name | M-1 (MD M1) |
| Microphone Form Factor | Table Array |
| Power Source | Corded Electric |
| Material | Metal |
| Hardware Platform | PC (Compatible with Radio) |
| Number of Channels | 1 |
| Frequency Response | 3E+1 KHz (General range, specific EQ bands 63Hz-16kHz) |
| UPC | 788026158164 |
| Item Weight | 4.25 - 4.3 Pounds |
| Recommended Uses | Video Conference, Voice Recording (and Ham Radio Communication) |
| Connectivity Technology | XLR |
| Connector Type | XLR |
| Special Feature | Programmable |
| Compatible Devices | Radio |
| Included Components | Microphone |
| Polar Pattern | Unidirectional |
| First Available Date | February 17, 2017 |
8. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official Yaesu website. Warranty terms typically cover manufacturing defects for a specified period from the date of purchase.
When contacting support, please have your product model (MD M1) and serial number ready. For service or repair, it is recommended to contact an authorized Yaesu service center.
