I have a UT-10 1.2GHz module for the TS-790A for sale. I have the
instruction sheet and the screws necessary to mount this inside the
790A. I don't have the original box.

I've heard conflicting replies as to how much this unit is worth, so
please email me if you're interested and we'll try and settle on a
price. Email: david.n2teb at gmail dot com. Thanks.