Heathkit AT-1 Rebuild

[N2DTS]

Odd that I do not hear any change at all between no activity and full.
The circuit I use has a 200K pot feeding the plate and screen of a 6BH6, with a fixed 10K resistor to the screen. 

I also adjust the screen voltage in my homebrew exciters to adjust the drive level and it does not seem to change the frequency at all, although that has a buffer tube between the vfo and the 6146.

[DMOD]

Odd that I do not hear any change at all between no activity and full.
The circuit I use has a 200K pot feeding the plate and screen of a 6BH6, with a fixed 10K resistor to the screen.  

Me neither. I never was able to hear RF for some reason.    I guess I was born RF deaf.

I also adjust the screen voltage in my homebrew exciters to adjust the drive level and it does not seem to change the frequency at all, although that has a buffer tube between the vfo and the 6146.

Now you know why it is called a buffer.


I think if you use the generic circuits below you will have a stable oscillator with a buffer that has a variable output for the next stage.

Phil -AC0OB