- one dongle owned
- either FT817/FT857/FT897 or FT890 active at once
- one computer active at once
|BT dongle and Y-adapter for FT-890|
Another requirement is that CAT rate on both 8x7 and 890 is set to 4800 baud since FT-890 does not offer other choices.
Incidentally the FT-840 has the same connectors of FT-890, so swapping and/or using a CAT bluetooth dongle is possible too.
Last but not least, it is possible to build a CAT-to-Bluetooth adapter natively for FT-890/FT-840 which takes DC power supply either from one of those ports or the 13.8V PSU. It can even be "dongle shaped".