4/05 ©2005 Kantronics Inc.Kantronics KPC-3+ Port Pinout InformationKPC-3+ Rear ViewRadio Port (DB-9) Pin-out:Pin no. Signal name Function Related Jumpers1 TXA Transmit audio (AFSK out) J92 XCD External carrier detect (transmit inhibit) inputor (via software command w/ 8.2 or higher firmwareversion) alternate GPS Input portSoftware Command3 PTT Push-to-talk (to radio PTT/transmitter enable input)4 CTRLB/AN0 Control line B (or AN0 input) J85 RXA Receive audio (AKSK in) J3, J46 GND Ground7 EXT-IN External input for Power/Reset J6, J78 CTRLA /AN1 Control line A (or AN1 input) J109 GND / RESET Ground or Reset Input (jumper selectable – J5) J5To find corresponding pin-outs for many radios, visit www.packetradio.com.Port-Related JumpersJ3: Input Impedance Select 1 2 RXA input impedance 10 kΩ. (default)1 2 RXA input impedance 600 Ω.J4: Radio Port Pin 9 Function Select 1 2 Input Equalization on.1 2 Input Equalization off. (default)J5: Radio Port Pin 9 Function Select 1 CTR 2 Radio Port pin 9 is ground. (default)1 CTR 2 Radio Port pin 9 is external reset input.Radio Port Computer or GPS Port