Traces of the cat's shadow

Смотрю описание конструкции антенны. Читаю примечание:

(If you are a HAM): Design and Adjustement is easy, as with the Capacitor you can tune the Resonance by some MHz with no effort.
(If you are my boss): Design and Adjustement is very tricky and can only be done by smart engineers with sophisticated Measurement Equipment.

Всё так, да. :)