[Amps] Starting up a NEW Henry amp

[Adrian]

Alek, Did you try increasing Q of the input to ~c 2 to produce a better 
flywheel effect,

which becomes a more stable input impedance  through a wider drive level 
range ?

More capacitance, less inductance on the input.


73


vk4tux

On 13/12/23 20:14, amps-request at contesting.com 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.

73, Alek VK6APK