The Yaesu M-90D is equipped with both a round 8 pin jack and an 8 pin modular jack.
Supplied microphone cable (round 8-pin to 8- pin modular)can be connected to either jack of the tranciever.
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 micophone 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 in the circuit board in order to enhance the audio quality.
The M-90D is compatible with all Yaesu HF-transceivers equipped with the round 8-pin microphone connector or the 8-pin modular microphone connector.
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 thePTT key for those long rag chews.