Yaesu’s newest desktop microphone utilizes a dynamic microphone element that is finely tuned to deliver rich low to mid-frequency response desirable for a clear and concise conversation.
Using a windscreen cover and a directional microphone element, the structure of the microphone of the M-90D and M-90MS is designed to concentrate voice input from the front while reducing ambient noise from the side.
Built-in Low-Cut filter creates clear and crisp audio characteristics by shaping the low-frequency response (cut off at 340Hz, -6dB/octave).
An isolation transformer is integrated into the circuit board in order to enhance the audio quality.
The M-90D and M-90MS are compatible with all YAESU HF transceivers equipped with the round 8-pin microphone
connector or the 8-pin modular microphone connector.
We believe that the M-90D and M-90MS will have a positive impact on your transceiver’s performance.
 
The PTT of the M-90D uses three Air-Cylinder tubes similar to the Reference Microphone M-1. This provides
solid and smooth extended operation. A simple one-touch PTT keylock button is placed directly above the
PTT key for those long rag chews.