is a popular dynamic desktop microphone designed for Yaesu HF transceivers, featuring built-in audio filtering and flexible connectivity options for both 8-pin round and modular (RJ-45) jacks. It is highly regarded by amateur radio operators for providing "punchy" audio that cuts through well during DXing and pile-ups.
Technical Specifications
According to manufacturers and technical databases like RigPix and Universal Radio, the microphone features the following specs:
Transducer Type: Dynamic (Cardioid).
Frequency Response: 100 Hz to 5,000 Hz.
Sensitivity: -75 dB (0 dB = 1 V/0.1 Pascal).
Impedance: 500 ohms unbalanced.
Weight: Approximately 24 ounces (670 grams) without cable.
Key Features and Controls
The
MD-100A8X
includes several specialized controls located on both the base and the bottom of the unit to tailor audio output:
Audio Filtering: Features a High Emphasis switch (provides a +6 dB boost at 3,000 Hz) and a Low Cut switch with three positions (Off, -3 dB at 150 Hz, or -3 dB at 300 Hz).
Multi-Axis Mount: A pivoting mount allows for both horizontal and vertical adjustment of the microphone head.
Operational Controls: Large Push-To-Talk (PTT) switch, a latching Lock button, and Up/Down scanning buttons for compatible transceivers.
Connectivity: Includes a reversible coiled cable compatible with 8-pin round and RJ-45 modular jacks.