The Icom SM-50 is a unidirectional, dynamic microphone designed for base station operation with select Icom transceivers. (It cannot be used with non-Icom transceivers since the power is supplied from the connected transceiver). The SM-50 features Up-Down tuning (on compatible ICOM transceivers). There is a switch for PTT (push to talk) and also a lock feature. There is also a Low Cut Switch on the top of the base to cut out the low frequency components on input voice signals. 

On the bottom of the mic base there is a gain adjustment. This mic is powered from the Icom transceiver. The mic cables terminate to a standard Icom 8 pin mic plug. 

Compatible with :

IC-78

IC-718

IC-746

IC-756

IC-910

IC-7100

IC-7200

IC-7300

IC-7410

IC-7600

IC-7700

IC-7800 

IC-7851 

IC-9100