I'm in the design stages of a Mosfet Amp Build. I'm having trouble figuring out how to bias the mosfets and how to setup a matching circuit. Not quite sure at this point which mosfets will be used in this build. I'm looking at either the IRF520 or the ERF7530. Any help with these problems would be greatly appreciated. This is my first build of course so I'm green behind the ears. Also not quite sure how to get the RF input into the Mosfets come to think of it.