I take the answers you got one step further. Yes, I use the control COM port for PTT. Yes, you need to change the mike functions (buttons/PTT). I also use an "extra" USB sound card for the radio audio I/O so that the system sounds still can come from the computer. Some digital mode software "talks" to you. JT65 alerts for one. The extra sound card also keeps the computer boot sounds from transmitting to all...

steve WB3LGC

On 28-Oct-15 4:58 PM, Forest Shick wrote:
What is the easiest way to connect the KX3 to a computer for RTTY, PSK31 &
SSTV. I have purchased the cable set. I connect the KX3 - Phones connector
to the computer audio in and I can receive RTTY & SSTV. If I connect the
computer audio out to the KX3 MIC, the radio goes into transmit. I would
guess this is because the connector on the cable is incorrect for the MIC
connector - too few contacts.



So how do you connect the audio for transmitting?

Thank You

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