Tuesday
12Jun2007
PSK31 Sound Card Interface
Tuesday, June 12, 2007 at 7:52PM ;)
If your sound card has Line In and Line Out jacks, and your radio has an accessory port, this is the easiest way to interface between the two. Using your radio's accessory port eliminates the need for more circuitry to control the audio level going to and from your radio. This interface has worked perfectly during regular use and several Field Days. All the parts are available from RadioShack, and it can be constructed in under an hour.
in Electronics, Ham Radio
Electronics, Ham Radio 
Reader Comments (1)
I'd add a pot in both the audio lines on the computer side of the xfmrs to better control the audio, or at least put in a 10:1 divider on the speaker line from the radio.