Fldigi is a modem program for most of the digital modes used by radio amateurs today: CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia, and Throb are all supported. It can help calibrate a sound card to a time signal and do frequency measurement tests.
I have downloaded and installed the new 3.22.01 Fldigi version without any issues. Using a Flex 3000 radio with Windows 7 quad core with 64 byte, with 6 gigs of memory. I will post a video review on the "telescopeman" YouTube channel. No issues encountered running it on the above computer or with the Flex 3000 radio using virtual cables. It installed in a seperate directory and did not affect any of the previous macros I had setup. Good support is available on the Fldigi Yahoo Group. Joe Lalumia W1XWX call sign