Appologies, this has probably been bashed to death, but having searched a lot and tried what I have found in the Forum search, I,m still beaten.
For many months I have run WSPR on a number of interfaces from homebrew to commercial all of which (eventually! ) worked.
I have just obtained a MicroHam Microkeyer but I just cannot get CAT to work....RX/ and TX work fine.
CAT also works OK in HRD/DM 780.

Getting short on ideas now.
I have set the Port/CIV address to match the rig and used IC7800 in WSPR as usual.

Anyone give me a few pointers please?

Thanks Roger G0IUW