Which pins for PTT from serial port?

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N2CQR
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Joined: 2009/04/19 - 10:38
Which pins for PTT from serial port?

I'm working on the PTT circuit for my homebrew DSB /Direct conversion 30 meter transceiver. I'm looking for info on the PTT signal that will come from the computer serial port. Which pins? What kind of signal comes out? Is it 5 volts on transmit? What settings should I use in WSPR? RTS? Any other setting changes needed? Thanks, 73 Bill N2CQR