[Amps] best tuner

[k9sd]

I think I will build a tuner...there are lots of diagrams but which one is the best ??

I have several vacuum variables and a monster roller inductor...size isn't a problem..I just want a
 good one..

I want one that will do what a Nye Viking tuner will do....

There are some new ones that seem to have a patent on them..???  If I don't sell the tuner
could  I make one for myself ??    I don't have the print of one but maybe I could find a copy ??


Thanks for any input..


I really enjoy this hobby...been a ham since 1962..it just gets better..

Life is good...


Sam  K9SD