Schematic
Here's the schematic. It took 10 revisions to get everything working to my satisfaction.
Posts
New video
Here's my new video which includes a more information. https://www.youtube.com/watch?v=En6QonSDCnU
First video
Here's the first video of my 630 meter LDMOS amplifier build. https://www.youtube.com/watch?v=7TwW9u4PvqU
Good power
I have reached my goal. I got 250+ watts out. Next, I just have to put together a submission to the NXP homebrew RF amplifier competition.
Getting closer
Working on my LDMOS amplifier. Getting a lot closer. Its putting out 200 watts now. Just a little more tweaking and it'll be done.
Still working on it
Still cranking away at the LDMOS amplifier I am getting 150 watts out still. I'm now optimizing each section.
A few changes
Made a little more progress on the LDMOS amplifier. I added 4200pf of capacitance to one part of the output circuit and picked up some output power. Now I'm getting 150 watts out at max power. Half way there