4/05
©2005 Kantronics Inc.
Kantronics KPC-3+ Port Pinout Information
KPC-3+ Rear View
Radio Port (DB-9) Pin-out:
Pin no.
Signal name
Function
Related Jumpers
1
TXA
Transmit audio (AFSK out)
J9
2
XCD
External carrier detect (transmit inhibit) input
or (via software command w/ 8.2 or higher firmware
version) alternate GPS Input port
Software Command
3
PTT
Push-to-talk (to radio PTT/transmitter enable input)
4
CTRLB/AN0
Control line B (or AN0 input)
J8
5
RXA
Receive audio (AKSK in)
J3, J4
6
GND
Ground
7
EXT-IN
External input for Power/Reset
J6, J7
8
CTRLA /AN1
Control line A (or AN1 input)
J10
9
GND / RESET
Ground or Reset Input (jumper selectable – J5)
J5
To find corresponding pin-outs for many radios, visit www.packetradio.com.
Port-Related Jumpers
J3: Input Impedance Select
1 2
RXA input impedance 10 k
Ω
. (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
