YT1DL Only Digital

VSP Manager by K5FR (built on Eltima VSPD serial driver)

Maybe best solution for virtual serial ports is VSP Manager by K5FR based on Eltima serial port driver. If you use Windows 7 this is maybe only solution for you. I test many of similar software virtual ports but only Eltima and K5FR works perfect at Windows 7 or Vista. Eltima serial port driver is not free but VSP Manager is provided free of charge for HAM radio usage. Visit K5FR site and download latest version at http://k5fr.com/ddutilwiki/index.php?title=VSP_Manager