YAESU FT-818ND FT-857 FT-891 PTT / Headphone / Microphone / CAT Adapter

NOTE This product is an adapter designed for voice communication and cannot be directly applied to image and data communication such as SSTV PSK31 Echolink Use the adapter to achieve the following functions 1 External speakers headphones external moving microphones electret microphones 2 Use the emergency PTT button that comes with the adapter to launch 3 Use the PTT socket of the adapter to connect the PTT switch or the foot switch for transmitting operation 4 Using the CAT port of the adapter it has two channels with the CAT that comes with the machine to implement operations such as communication with the computer and communication with the antenna FT 817 FT 818 does not have this function only FT 857 FT 897 Wiring diagram Note The connector uses the solenoid type hand wheat 8 core wire that comes with the radio as the input terminal connection When using remove the cable plug from the MH 31 hand wheat and insert it into the connector Setting of jumper in the machine Before setting the jumper in the machine use the hexagonal wrench delivered with this product to disassemble the panel on the side of the radio connection and pull out the PCB board Be careful not to lose the aluminum PTT button 1 MIC MODE Set the external microphone properties When an electret microphone is used the left side is shorted EC when a moving microphone is used the right side is shorted MC 2 PHONE MODE Set the properties of the external headset When using mono