MOSFET RF power amplifier design

[spacecase0]

I have been playing with amateur radio for about 30 years now.
RF power amplifiers do some odd things,
you really need filtering to make sure that you are not transmitting out of frequency range.
so, usually an amplifier that works on 472KHz will not be the same one that works on the 40M band...
though there are some that will do it, you might want to build 2 separate amplifiers to get that kind of range, or at least have selectable filtering for what frequency you are using at the time.
my next question is how much power out are you looking for ?
I have been collecting schematics for this sort of thing for many years, so I likely have schematics of what you want.

[Buddhafollower]

Good day,
Can someone recommend me a website or some documents to read so I can have an idea as to how I can build/design an RF power amplifier with MOSFET's?
I am interested in the subject. I like it but it's all a mystery to me for the moment.
I imagine somewhere on the world wide web there must be a website dedicated to this subject. I really wish I would design my own amplifiers. I'am interested in broad band RF power amplifiers with amplification extending from 630m to 40m. So between 472kHz to 7.3MHz. I think the best source will be a website created by a radioamateur.
Thank you,
Michael