The Yaesu SSM-64A VOX headset is a great complement to the VX-120 / VX-170 / VX-6R / VX-7R / VX-127 / VX-177. The headset may be switched from conventional PTT Push To Talk to VOX operation. The VOX sensitivity is adjustable (3 mVrms to 10 mVrms). The SSM-64A plugs in to the transceiver's threaded MIC/SP jack. With 5.2 foot (1.6m) cord. 32 ohm impedance, 30 mW audio output level. The required 2-10 VDC at 1.5 ma, is derived from the radio.
Supply Voltage: 2-10vDC
Current: 1.5mA Max
VOX sensitivity : adjustable (3 mVrms MAX to 10 mVrms MIN)
RoHS2 EN 50581:2012
2011/65/EU Art 7(b)