SSB/AM driver amp for LFTX / BasicTX?

Hi,

I am a ham, and software engineer, not a lot of electronics experience.
Can anybody recommend a commercial product, or simple circuit , or
further information for taking whatever LFTX
(using USRP) puts out (1mw I guess ?) to at least 1W level (to later be
fed into a linear amp like Tokyo Hy Power HL45B for SSB operating).

Thank you,

Adi