[Amps] Starting up a NEW Henry amp

[Jim Brown]

On 12/12/2023 1:37 PM, Alek Petkovic via Amps wrote:
> For what it's worth, I have had terrible problems getting the input 
> matching right on several amplifiers using the VNA, yet when using 
> normal drive levels, as reccommended in the user/service manuals, tuning 
> is a breeze. Therefore, I think that there is some truth in the 
> assertion that tuning at low levels does not work properly.

Impedances include the tube(s) as active elements, and their 
contributions depend on their dynamic characteristics.

73, Jim K9YC