[Amps] 400 watt Polyfet HF amplifier

[Richard Solomon]

Looks interesting. Is there a source
for the PC Board ?

73, Dick, W1KSZ

On Thu, Jan 18, 2018 at 12:38 AM, John Lyles <jtml at losalamos.com> wrote:

> Polyfet has a 2014 technical bulletin on their website, TB239. It uses
> their LY942 LDMOS transistor to make a flat 2-30 MHz 400 watt linear
> amplifier with 20 dB gain, using 50 volt parts. Its a compact layout and
> there is a full parts list along with plots. Has anyone built one of
> these?  Its not 1200 or 1800 watts, but has decent 3rd order IMD results
> listed.
> 73
> John
> K5PRO
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