I'm finally working on the PTT T/R circuit for my homebrew DSB /Direct conversion 30 meter transceiver. I hope to use the simple one transistor circuit from W3PM's FB HB WSPR rig.
But I need info on the PTT signal that will come from the computer serial port. Which pins on the 9 pin serial port connector? 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?
I hope to be transmitting AND receiving soon.
Upcoming HAREC Amateur Radio Licence Exams in Ireland - 11th May 2024
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From the IRTS... "*HAREC Exams on May 11th in Dublin and Tralee, Co. Kerry*
*The IRTS Examinations Board is pleased to announce that it has received
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48 minutes ago