DATAEQUIPMENTINTERFACE(ACC2)The ACC 2 connector allows connection of a Terminal Node Controller (TNC) or a Multimode CommunicationsProcessor (MCP) for data communications.6 PKS7 PKD8 PKDGFunctionNot connectedRTTY modulation (input). Connect the transmit lead from your RTTY equipment for FSK operation.Fixed-level audio from receiver (output). Connect to TNC or MCP receive data lead.. Audio level is independent of VOLUME control setting.Chassis groundSquelch control. Connect to TNC or MCP squelch control pin.. Preventsthe TNC/MCPfrom transmittingwhile the receiver squelch is open.. Squelchopen: High impedanceSquelch closed: Low impedanceRadiotelephone PTT line control. Connect to TNC or MCP transmit/receive switching pin.. Microphone audio input at the MIC pin on the Front Panel MIC connector is mutedwhen in transmit mode.Microphone audio (input). Connect the transmit lead from your TNC or MCP for AFSK operation.Shield for Pin 7.@~ @CD G)@ (2)@ACC 2 connector(Rear Panel view)18PinNo. I PinName-1 NC2 RTK3 ANO4 GND5 PSQ