Product Details:
Scientific Radio Systems SR-1600 remote control. Provides local receive audio and couples local microphone audio to a remote transceiver via 600 ohm balanced lines. Includes a local microphone pre-amp and internal 4 watt audio amplifier and speaker for receive audio. Grounding the key-line switches from receive to transmit and switches the front panel indicator lights. Rear panel connections for external transmit audio and external speaker. Operates on 115 / 230 vac. Plenty of 12 DC available to power other devices. Old style 6 pin microphone connector on front panel. Button style spring clip mic holder on side. Includes manual. Dimensions: 8-5/8" x 5-3/4" x 7-5/8"D.