140 Appendix A – Interface Pin Assignments TB9100/P25 CG/P25 TAG Installation and Operation Manual© Tait Limited March 2014DC Input to 12V PAThe pin allocations for the 2-way DC input connector are shown below.Microphone ConnectionThe pin allocations for the microphone socket are given in the followingtable.Pin Description1 +V output2 ground2-pin connector - rear viewbcPin Description1 +V output2 ground2-pin connector - rear viewbcPin Description1 not connected2 not connected3 not connected4 PTT5 voice band (microphone) input6 microphone ground7 not connected8 not connected1 2 3 4 5 6 7 8front view