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(7) – LPT: Input from computer LPT (printer) port.
Connector: DB25 female
(8) – OUT SC1 (MK2R only): Input from the Line Out of the computer Sound Card #1
Connector: 3.5mm (1/8”) stereo
TIP – Left channel RING – Right channel SHELL – Ground
(9) – IN SC2 (MK2R only): Output to Line In of the computer Sound Card #2
Connector: 3.5mm (1/8”) stereo
TIP – Left channel RING – Right channel SHELL – Ground
(10) – OUT SC2 (MK2R only): Input from Line Out of the computer Sound Card #2
Connector: 3.5mm (1/8”) stereo
TIP – Left channel RING – Right channel SHELL – Ground
(11) – MIC SC1 (MK2R only) : Output to Mic In of the computer Sound Card #1
Connector: 3.5mm (1/8”) stereo
TIP – Signal RING – Signal (internally connected to TIP) SHELL – Ground
NOTE: These four jacks (8-11) are present only on MK2R. MK2R utilizes one or two external
sound cards SC1 (for Voice modes) and SC2 (for Digital modes). MK2R+ includes internal SC1
(Voice Codec) and SC2 (Digital mode Codec).
(12) – USB: Port for connecting to the computer USB port.
Connector: USB B
(13) – PAD: Port for connection of a future external controller.
Connector: Mini DIN6
(14) – PS/2: Port for connection of external PS/2 keyboard or numeric keypad.
Connector: Mini DIN6
(15, 16) – iLINK (interLINK): Ports for connecting other microHAM devices (e.g., Station Master) to
MK2R or MK2R+.
Connectors: Mini DIN6
(17) – ACC: external multi-function I/O port (see ACC Port section of this manual)
Connector: DB25 female
Pin description is in Appendix B.
(18) – PADDLE: Paddle input.
Connector: 6.3mm (1/4”) stereo
TIP – DIT Input RING – DAH Input SHELL – Ground
NOTE: The paddle sense can be reversed using Router or application settings.
(19) – RADIO2 Multi-pin jack for RADIO2 interconnection.
Connector: DB37 female
Detailed description is in Appendix A.
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