[35Z5]

Frequency wise, the AM25 is fully tunable, what the builder has to decide is what range of frequency to build the output matching network. You may need to rebuild the coils but that won't stop it from working on any frequency you select. 

I've built one and are actually fairly good.

See page 18 of assembly manual.

http://sourcefmtransmitter.com/ramsey-el...manual.pdf