I tried for months to get it to work and gave up and bought a Yaesu FTDX10.
Similar problems to the latest writer here, everything seemed ok but would
erratically key the Omni VII.
If I were to go back to the Omni VII to try FT8 again, I would try
installing this USB port manager from the Yaesu site:
FTDX10 SCU-17 USB Driver Virtual COM Port Driver Installation Manual
818.26 KB )
FTDX10 USB Driver Virtual COM Port Driver (Windows 11/10)
216.45 KB )
I think the Omni VII FT8 problem is a computer problem involving management
of the two ports, one controlling the Omni and one handling the Signalink.
The above program and user manual is at the bottom of this page:
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