Do you want a linear amp (per the subject line) or a class C amp?
They're not the same critter.

There was an article in QEX just one issue ago about a P-P power
MOSFET amplifier for 7MHz.

There are power MOSFETs designed specifically for RF service: just do
a Google search for 'RF power mosfet' and you'll get lots of hits.
Many are designed for service well beyond HF.

73 de k7itm


Paul Burridge wrote in message . ..
Hi all,

I was thinking about having a go at contriving (I won't say
"designing" for obvious reasons) a class 'C' RF amp using MOSFETs
instead of the usual BJTs/toobz. They seem - on the face of it at
least - ideally suited to the task. I'm just a bit concerned about
whether even the fastest ones would be fast enough, even given
adequate gate drive. I'd be surprised if they weren't good for at
least a few Mhz., but am quite frankly clueless as to MUF. Anyone
know?

Thanks,

p.