The M-90D uses a dynamic microphone element that is finely tuned to provide a rich low-to-mid frequency response desirable for clear and concise conversation.
Utilizing a wind screen and directional microphone element, the M-90D's microphone structure is designed to concentrate voice input from the front while reducing side ambient noise.
The built-in Low-Cut filter creates clear and crisp audio characteristics by shaping the low frequency response (cut at 340Hz, -6dB/octave). An isolation transformer is integrated into the PCB to enhance audio quality.
The M-90D's PTT uses three Air-Cylinder tubes similar to the M-1 reference microphone. This provides solid and smooth prolonged operation. A simple one-touch PTT key lock button is positioned directly above the PTT key.
The M-90D is compatible with all YAESU HF transceivers equipped with an 8-pin round microphone connector or an 8-pin modular microphone connector.
Specifications:
Microphone Type: Dynamic
Supply Voltage: DC 5.0 V +/- 10 %
Frequency Response: 30 - 17000Hz
Sensitivity: - 60 dB(1kHz 0 dB=1V/1Pa)
Microphone Impedance: 600 Ohms
Dimensions: W106 x H192 x D126.5 mm * H: maximum when the microphone head is flat.
Weight: 530 grams without cable
