Been using that simple transistor device on each platform since Win98.
When I switched from parallel to serial. Works fine on XP, Win7, and
Mac. Single most important thing is junking Norton, McAfee or anything
other than Microsoft's Security Essentials.
Also Wayne's suggestion on priority does work at least on Win7.
I would also suggest looking at what junk is in the startup file and
eliminating most of it.
BTW I have tried opto's and have used them but correctly sinking the PTT
and getting FSK to work is harder tho with a resistance substitution box
easy enough. But the resister varies even on the same model of rig that
you might be using. A generic 1K or 1500 ohms doesn't work very well.
Jay
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