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Good day, I were browsing the internet in search of a small linear ( Solid State ) and I have found this one on this page http://www.electronics-lab.com/projects/rf/009/index.html and I really like the concept, There is one thing I'm not really up to speed with and this is the Mhz of this Linear amp, What is the frequency range that this linear can work with, I'm wanting to build something that can work in the 2m range 144 - 146 Mhz anything from 60 watt to 150 watt with +- 5 - 10 watt drive depends on .... I will appreciate it if you can give me some more info on this circuit, even on the vcc side you talk about 60 volt dc i think and 120 volt as well and to set the 10k preset to 100ma drain current but only what I see is a 1K preset and not a 10k preset please advise. Sorry for all this Questions I'm note really a Linear builder more of a Power supply type guy, I'm also busy with my first Valve Linear Two 811a tubes about 400 watt. Thank you and have a great day. Kind Regards Jaco Le Roux