I have an 807 vacuum tube and I want to design a RF power amplifier with it.
Since I have only one tube so I want to use transistors for the rest of the power amplifier circuit.
The 807 tube will be used in the final stage and transistors will be used in the pre-amp stages.
I do not have any previous experience in tube based amplifier design, but I have done transistor amplifiers. The output power needs to be 10-20 W. I have a QRP CW transmitter that produces about 800mW on 40m. I am planning to use this tube amplifier with that transmitter.