Hardware Connection

Here are the tables of some known transceiver interfaces and functions supported in MixW software:

MixW RigExpert family products

Transceiver interfaces from other manufacturers

Interface\Functions	Audio I/O	FSK out	CAT I/O	PTT out	CW out	CW keyer
EZ Master	+ *2	+	+	+	+	+ *3
OPTO-IF, CATOPTO, MIXIF2 interfaces	+ *2	-	+	+	+	-
microHAM USB Interface	-	-	+	+	+	-
USB Micro Keyer	+ *2	+	+	+	+	+ *3
RIGblaster interfaces	+ *2	+	+	+	+	-
RASCAL interfaces	+ *2	-	-	+	+	-
MFJ interfaces	+ *2	-	-	+	+	-

*1 - Audio in/out via built-in sound card

*2 - Audio in/out via computer sound card

*3 - WINKEY CW keyer (not fully supported in MixW yet, but this will be done soon)

Direct connection (simple home made interface)

Connecting a transceiver

You have two basic options for keying the transmitter:

- "hardware" keying via RTS or DTR line of a serial port (preferred)
- "software" command via the CAT interface (supported in some transceivers)

A simple circuit for connecting PTT, CW, and CAT (RXD and TXD) lines to the computer can be as follows. Use a 9- or 25-pin connector.

Connecting a CW paddle

MixW allows connecting a CW paddle to the joystick port. Use a 15-pin connector.

TRLog-compatible LPT port interface

(Since MixW 2.05)