GW3UEP - 25 Watt 472 kHz CW power amplifier

I put into practice the 25 Watt PA for the 630 meter medium wave band from the scematic of GW3UEP.
The vantage of this project are: lo-cost, simple repeatable design (no toroids), efficiency AC to RF over 80% 

Here is the link to the website of GW3UEP:   http://www.gw3uep.ukfsn.org/472kHz.htm